ZIP Code

5 digit zip code as designated by the United States Postal Service of which we are a licensed distributor of their data. This field is updated every month.

U.S. Territories are also included in our data. (Puerto Rico, American Samoa, etc.)

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City

City name as designated by the United States Postal Service of which we are a licensed distributor of their data. This field is updated every month.

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City Mixed Case

The city name of the ZIP Code in proper case. The USPS designates cities in all uppercase (i.e. NEW YORK). The Mixed case fields turns this into proper upper and lower case letters (i.e. New York).

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Area Code

Telephone area code(s) of the particular postal zone (zip code).

Sorting by this field will give you all the data grouped by area code.

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State Code

U.S. two digit state code.

Sort on this field to get all your data grouped by state.

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State Name

The full U.S. state name.

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City Alias

The alias name for the ZIP Code. This may be a city name, postal entity, community or a municipality name.

The city alias names are the reason why our database has approximately 78,000+ records. There are only about 43,000 U.S. zip codes, but since we list each city alias within a zip code, we end up with almost double the number of records.

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City Mixed Case

The city alias name of the ZIP Code in proper case. The USPS designates cities in all uppercase (i.e. NEW YORK). The Mixed case fields turns this into proper upper and lower case letters (i.e. New York).

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City Alias Abbreviation

Abbreviation of city alias where applicable.

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City Type

Describes the type of postal station in the "City Alias" field:

A Branch or post office branch is a postal facility that is not the main post office and that is outside the corporate limits of the community.

A Community Post Office (CPO) is a contract postal unit providing services in a small community in which other types of post office facilities have been discontinued.

A Area Distribution Center (ASC) or processing and distribution facility (formerly known as a General Mail Facility) is a central mail facility that processes and dispatches incoming and outgoing mail to and from a designated service area.

A Sectional Center Facility (SCF) is a ASC for a designated geographical area defined by one or more three-digit ZIP code prefixes.

A Post Office, formerly known as a general post office or main post office, is the primary postal facility in a community.

A Station or post office station is a postal facility that is not the main post office, but that is within the corporate limits of the community.

An Urbanization is a facility type specific to Puerto Rico.

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County

County or parish where the ZIP Code resides.

As with any of our data fields, you can sort the data by this field and the result will be data grouped by county.

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Latitude

The geographic coordinate of a point measured in degrees north or south of the equator.

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Longitude

The geographic coordinate of a point measured in degrees east or west of the Greenwich (prime) meridian.

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Elevation

The county's average elevation.

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Time Zone

Time zone designation within the U.S. - the numbers 4-15 are assigned to the time zones.

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Daylight Savings

Flag indicating whether a ZIP Code observes daylight savings.

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Population

The population of the ZIP Code based on Census 2010 Zip Code Tabulation Area.

The population numbers are not projected to the future, they are actual Census 2010 numbers.

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Households per ZIP Code

Total estimated amount of households per ZIP Code based on Census 2010 Zip Code Tabulation Area.

The households per zip numbers are not projected to the future, they are actual Census 2010 numbers.

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Persons per Household

Average number of individuals per household.

The average number of individuals per household are not projected to the future, they are actual Census 2010 numbers.

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White Population

The estimate of White population per ZIP code based on Census 2010 Zip Code Tabulation Area.

The white population numbers are not projected to the future, they are actual Census 2010 numbers.

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Black Population

The estimate of Black population per ZIP code based on Census 2010 Zip Code Tabulation Area.

The black population numbers are not projected to the future, they are actual Census 2010 numbers.

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Hispanic Population

The estimate of Hispanic population per ZIP code based on Census 2010 Zip Code Tabulation Area.

The hispanic population numbers are not projected to the future, they are actual Census 2010 numbers.

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Asian Population

The estimate of Asian population per ZIP code based on Census 2010 Zip Code Tabulation Area.

The Asian population numbers are not projected to the future, they are actual Census 2010 numbers.

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Hawaiian or Pacific Islander Population

The estimate of Hawaiian or Pacific Islander population per ZIP code based on Census 2010 Zip Code Tabulation Area.

The Hawaiian or Pacific Islander population numbers are not projected to the future, they are actual Census 2010 numbers.

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American Indian and Alaska Native Population

The estimate of American Indian and Alaska Native population per ZIP code based on Census 2010 Zip Code Tabulation Area.

The American Indian and Alaska Native population numbers are not projected to the future, they are actual Census 2010 numbers.

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Other Population

The estimate population for all other races per ZIP code based on Census 2010 Zip Code Tabulation Area.

The other race population numbers are not projected to the future, they are actual Census 2010 numbers.

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Male Population

The estimate of Male population per ZIP code based on Census 2010 Zip Code Tabulation Area.

The Male population numbers are not projected to the future, they are actual Census 2010 numbers.

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Female Population

The estimate of Female population per ZIP code based on Census 2010 Zip Code Tabulation Area.

The Female population numbers are not projected to the future, they are actual Census 2010 numbers.

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Median Age

The Median Age for all people per ZIP code based on Census 2010 Zip Code Tabulation Area.

The median age numbers are not projected to the future, they are actual Census 2010 numbers.

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Male Median Age

The Median Age for all Males per ZIP code based on Census 2010 Zip Code Tabulation Area.

The median age numbers are not projected to the future, they are actual Census 2010 numbers.

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Female Median Age

The Median Age for all Females per ZIP code based on Census 2010 Zip Code Tabulation Area.

The median age numbers are not projected to the future, they are actual Census 2010 numbers.

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Income Per Household

The Median average household income per ZIP code based on the Census American Community Survey.

Sort by this field to get all the top household incomes by zip code.

The Median average household income numbers are from the American Community Survey 2010-2014.

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Median average House Value

The Median average house value per ZIP code based on the Census American Community Survey.

Sort by this field to get the top house values by zip code.

The Median average house value numbers are from the American Community Survey 2010-2014.

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Primary Record

This column indicates the "primary" city name within a given zip code, as designated by the U.S. Postal Service.

If you want to get only the "unique" U.S. zip codes, sort the data by this field. Your results will be all (approx.) 43,000 unique zip codes and all will be designated with a "p".

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County FIPS

Federal Information Processing Standards code given to counties or parishes.

This code simply identifies each U.S. county by its unique 3 digit code.

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State FIPS

Federal Information Processing Standards code given to each state or US territory.

This code simply identifies each U.S. state or territory by its unique 2 digit code.

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MSA

Metropolitan Statistical Area. (no longer used by government - CBSA is the new standard)

MSA's were replaced by CBSA's in the 90's. We keep the old MSA's in our database because some of our older customers have mapped their data by this information and it makes it easier for them if we leave the data in the database.

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MSA Name

Metropolitan Statistical Area Description Name.

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PMSA

Primary Metropolitan Statistical Area.

This is the area that the Census Bureau designates as the "primary" area within a given MSA.

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CSA

Core Statistical Area.

This area is a group of MSA's combined into a population core area.

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CBSA

Core Based Statistical Area (replaces old MSA's).

A Core Based Statistical Area is the official term for a functional region based around an urban center of at least 10,000 people, based on standards published by the Office of Management and Budget (OMB) in 2010. These standards are used to replace the definitions of metropolitan areas that were defined in 1990.

A CBSA is broken into two sub categories, Metro and Micro, and are detailed in the CBSA Type Field. These are defined by their population densities. To be considered a Micro area, population must be between 10,000 and 50,000. To be considered a Metro area, population must exceed 50,000.

You can read more on CBSA's here.

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CBSA Name

The name of the Core Based Statistical Area.

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CBSA Division

Core Based Statistical Area Division number.

A metropolitan statistical area containing an urbanized area of at least 2.5 million people can be subdivided into two or more "metropolitan divisions," provided specified criteria are met. Metropolitan divisions are conceptually similar the primary metropolitan statistical areas (PMSAs) defined under previous standards.

This field gives the sub-divided region number.

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CBSA Division Name

Core Based Statistical Area Division Name.

A name of the CBSA Disvision.

This field gives the CBSA's sub-divided region name if it exists.

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CBSA Type (Metro/Micro)

Indication of whether a CBSA is Metro (over 50,000 population) or Micro (10,000 - 50,000 population).

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Census Region

Census Division: A geographic area consisting of several States defined by the U.S. Department of Commerce, Bureau of the Census. The States are grouped into four regions and nine divisions. Regions include: West, South, Midwest, and Northeast. See also: Division

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Census Division

Census Division: A geographic area consisting of several States defined by the U.S. Department of Commerce, Bureau of the Census. The States are grouped into four regions and nine divisions. Divisions include: New England, East North Central, East South Central, South Atlantic, Middle Atlantic, Mountain, West North Central, West South Central, and Pacific. See also: Region

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Mailing Name

Yes or No (Y/N) flag indicating whether or not the USPS accepts this City Alias Name for mailing purposes.

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Total Number of Establishments

The total number of Business Establishments for this ZIP Code. Data taken from ZIP Code Business Patterns 2012.

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Total Employment

The total number of employees for this ZIP Code. Data taken from ZIP Code Business Patterns 2012.

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Total First Quarter Payroll

The total payroll for the first quarter this ZIP Code. Data taken from ZIP Code Business Patterns 2012.

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Total Annual Payroll

The total annual payroll for this ZIP Code. Data taken from ZIP Code Business Patterns 2012.

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Employment Flag

Due to confidentiality, some areas do not have actual figures for employment information. Employment and payroll data are replaced by zeroes with the Employment Flag denoting employment size class.

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Top County Growth Rank

The rank in which this county is growing according to the US Census. Source: Housing Unit Estimates for the 100 Fastest Growing U.S. Counties between July 1, 2010 and July 1, 2011 Population Division, U.S. Census Bureau.

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2010 Housing Units Estimate

The estimated number of housing units in this county as of July 1, 2010. Source: Housing Unit Estimates for the 100 Fastest Growing U.S. Counties between July 1, 2010 and July 1, 2011. Population Division, U.S. Census Bureau.

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2011 Housing Units Estimate

The estimated number of housing units in this county as of July 1, 2011. Source: Housing Unit Estimates for the 100 Fastest Growing U.S. Counties between July 1, 2010 and July 1, 2011. Population Division, U.S. Census Bureau.

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Growth Number

The change in housing units from 2010 to 2011, expressed as a number. Source: Housing Unit Estimates for the 100 Fastest Growing U.S. Counties between July 1, 2010 and July 1, 2011. Population Division, U.S. Census Bureau.

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Growth Percentage

The change in housing units from 2010 to 2011, expressed as a percentage. Source: Housing Unit Estimates for the 100 Fastest Growing U.S. Counties between July 1, 2010 and July 1, 2011. Population Division, U.S. Census Bureau.

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2010 Estimated CBSA Population

The estimated population for the selected CBSA in 2010. Source: Table 1: Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas: Population Division, U.S. Census Bureau.

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2010 Estimated CBSA Division Population

The estimated population for the selected CBSA Division in 2010. Source: Table 1: Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas: Population Division, U.S. Census Bureau.

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115th Congressional District

The 115th Congressional District comes from the Census 2010 for congressional districts of the 115th Congress. This field shows which districts the ZIP Code belongs to.

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115th Congressional Land Area

This field provies the approximate land area covered by the District for which the ZIP Code belongs to.

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# Residential Mailboxes

The number of active residential delivery mailboxes and centralized units for this ZIP Code. This excludes PO Boxes and all other contract box types.

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# Business Mailboxes

The number of active business delivery mailboxes and centralized units for this ZIP Code. This excludes PO Boxes and all other contract box types.

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Total Delivery Receptacles

The total number of delivery receptacles for this ZIP Code. This includes curb side mailboxes, centralized units, PO Boxes, NDCBU, and contract boxes. This count is for Residential and Business combined.

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Preferred Last Line Key

Links this record with other products ZIP-Codes.com offers such as the ZIP+4.

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City State Key

A value that uniquely identifies a city state name in City State product.

Also used to link this record with other products ZIP-Codes.com offers such as the ZIP+4.

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Classification Code

The classification type of this ZIP Code.

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Multi County Flag

Flag indicating whether this ZIP Code crosses county lines.

IMPORTANT: This does not show which counties this ZIP Code covers, it is simply a flag that indicates whether the zip code falls into more than one county. If you need the actual counties that a particular zip code falls into, you need to purchase the Business version of our database.

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* Multiple County Data in the Business Database

The Zip-Codes.com Business ZIP Code Database now comes with Multi-County Data. ZIP Codes are assigned by the US Postal Service and as such, do not follow State, County, or even City boundaries. Many ZIP Codes even cross county borders (about 25%). With the Business Database, you can now know every county a ZIP Code covers.

The data is provided in a separate file (or separate table for our Access MDB users). This secondary file/table gives you every ZIP Code, as well as the State and County information that it falls into. Each ZIP Code that falls into more than one State/County will be listed in this table for each State and County it covers.

In addition to this, we have added a "Multi County Flag" column in all versions of our ZIP Code Database. This column will give a "Y" indicating flag letting you know this ZIP Code is located in more than one county making it even easier to use.

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Current Population Estimate - Exclusively from Zip-Codes.com

This field gives the estimated household population for this ZIP Code for November, 2024. The estimate is derived from known delivery information, household occupancy rates, household size, and more to come up with an accurate estimation for the current population.

IMPORTANT: This data does not inlcude population counts for persons in nursing homes, correctional facilities, or other institutions. This is an estimation of the household population based on US Postal Service delivery information.

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Land & Water Area

Two fields that show the approximate amount of land area and water area covered by this ZIP Code in Square Miles.

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City Alias Code

Code indication the type of the city alias name for this record. Record can be Abbreviations, Universities, Government, and more.

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Multi County Data

ZIP Codes often fall into more than one county, in fact, about 9,000 U.S. ZIP Codes fall into more than one county. This table lists all the ZIP Codes that fall into multiple counties and what those county names and FIPS are.

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Box Count

Total count of PO Box deliveries in this ZIP Code.

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SFDU - Single Family Delivery Units

Total count of single family deliveries in this ZIP Code; generally analogous to homes.

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MFDU - Multi Family Delivery Units

Total count of multifamily deliveries in this ZIP Code; generally analogous to apartments.

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StateANSI

American National Standards Institute codes (ANSI codes) are a standardized set of numeric or alphabetic codes issued by the American National Standards Institute (ANSI) to ensure uniform identification of geographic entities through all federal government agencies. These standards replace the Federal Information Processing Standards (FIPS) codes previously issued by the National Institute of Standards and Technology (NIST).

This code simply identifies each U.S. state by its 2 digit code.

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CountyANSI

American National Standards Institute codes (ANSI codes) are a standardized set of numeric or alphabetic codes issued by the American National Standards Institute (ANSI) to ensure uniform identification of geographic entities through all federal government agencies. These standards replace the Federal Information Processing Standards (FIPS) codes previously issued by the National Institute of Standards and Technology (NIST).

This code simply identifies each U.S. county by its 3 digit code.

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ZIP Intro Date

The date this ZIP Code was introduced to the database. It is in the form of YYYY-MM. In cases where the actual date is unknown, it will be preceded by a < to indicate “Before this date”.

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Alias Intro Date

The date this City Alias Name was was introduced to the database for the given ZIP Code. It is in the form of YYYY-MM. In cases where the actual date is unknown, it will be preceded by a < to indicate “Before this date”.

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Facility Code

The type of locale identified in the city/state name. The facility may be a USPS facility, such as a post office, station, or branch, or it may be a non-postal place name. City/state name facility codes include the following:

B = Branch
C = Community post office (CPO)
N = Non-postal community name, former USPS facility, or place name
P = Post office
S = Station
U = Urbanization

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Unique ZIP Name Indicator

Field that specifies whether the City State Record contains the organization name for a unique ZIP Code. If this field equals “Y,” the organization name will appear in the City State Name field.

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City Delivery Indicator

Specifies whether or not a post office has city-delivery carrier routes:

Y = Office has city delivery carrier routes
N = Office does not have city-delivery carrier routes

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CarrierRouteRateSortation

Identifies where automation Carrier Route rates are available and where the commingling of automation and non-automation mail, including Enhanced Carrier Routes and 5 digit presort, on the same pallet or in the same container is allowed. The values are A, B ,C or D and represent the following conditions:

A = Carrier Route rates are available (Y) and merging is permitted (Y).
B = Carrier Route rates are available (Y) and merging is not permitted (N).
C = Carrier Route rates are not available (N) and merging is permitted (Y).
D = Carrier Route rates are not available (N) and merging is not permitted (N).

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Finance Number

A code assigned to Postal Service facilities (primarily post offices) to collect cost and statistical data and compile revenue and expense data. The state number comprises the first two positions of the finance number.
The finance number can be used to match to records in other USPS files. By sorting these files by finance number, sequence matches can be made to use other street-level address information. For example, to use ZIP+4 product to obtain ZIP+4 codes for street addresses, a 5-digit ZIP Code, last-line number, or finance number for the street address must be known. The finance number can be obtained from the City State product.

For a street address such as “123 MAIN ST, SAN FRANCISCO CA,” matching to the City State product will not provide a single 5-digit ZIP Code because San Francisco has more than one ZIP Code (i.e., it is a “multi-coded city”); However, the finance number for San Francisco can be obtained from the City State product. Then, by sorting the ZIP+4 product into finance number and street-name sequence, a match can be found to provide both the correct 5-digit ZIP Code and ZIP+4 code.

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ZCTA = Zip Code Tabulation Area

The ZCTA is a U.S. Census Bureau defined area that attempts to approximate the geographic boundaries and thus demographic information about those areas, as they relate to the USPS Zip Codes. The method the Census Bureau uses to approximate these areas is a little more involved than this explanation but this is a general idea of how they attempt to do this.

The Census Bureau created Census Blocks. These Blocks are created using administrative and geographic areas that do not change very often, if ever. What this means is that they create these Blocks based on legal city limits (administrative) and actual street lines (geographic). Since these blocks are static, they are able to monitor trends in demographics without relying on other agencies and their changing boundaries, such as the USPS.

Once they create these Census Blocks, they try to match them to their corresponding USPS Zip Code. They do this by looking at each of their Blocks and within that block determining which Zip Code the majority of that Block falls into. Once this is determined, they assign it to that Zip Code.

This method creates an area that is similar to Zip Codes but not exact. If 51% of the addresses in a Block are one ZIP Code and 49% of them fall into another ZIP Code, the Census Bureau gives all of the demographic data to the ZIP Code that had 51% of the addresses. This creates some discrepancies between the Census defined demographics for a ZCTA and what the actual demographics might be in a particular ZIP Code.

In a macro sense, it all comes out to match the totals but on a ZIP by ZIP basis, there will be differences.

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Place FIPS

PLACEFIPS:: 2010 Place FIPS Code.

Place Name

PLACENAME:: Place or county subdivision name and legal/statistical area description.

Place Type

PLACETYPE:: Type of place or county subdivision

Func Status Code

FUNCSTAT:: Functional status describes whether a geographic entity is a functioning governmental unit, has an inactive government, is an administrative area without a functioning government, or is a statistical area identified and defined solely for tabulation and presentation of statistical data.  Functional status codes are:

Func Stat Text

FUNCSTATTEXT:: The description of the functional status code

FIPS Class Code

CLASSFP:: 2010 Place FIPS Class Code. Describes the general characteristics of a geographic area related to its legal or statistical status, governmental status, and in some cases relationship to other geographic entities.

Full list here http://www2.census.gov/geo/pdfs/reference/ClassCodes.pdf

Geo ID

GEOID:: Geographic Identifier. Seven-digit concatenation of 2010 State and Place. The Census Bureau and other state and federal agencies are responsible for assigning geographic identifiers, or GEOIDs, to geographic entities to facilitate the organization, presentation, and exchange of geographic and statistical data. GEOIDs are numeric codes that uniquely identify all administrative/legal and statistical geographic areas for which the Census Bureau tabulates data. From Alaska, the largest state, to the smallest census block in New York City, every geographic area has a unique GEOID.

Calculated Population

POPPT:: Calculated 2010 Population for the relationship record

Housing Unit Count

HUPT:: Calculated 2010 Housing Unit Count for the relationship record

Total Record Area

AREAPT:: Total Area for the record in square meters

Land Area

AREALANDPT:: Land Area for the record in square meters

2010 Population

ZPOP:: 2010 Population of the 2010 ZCTA

Housing Units of ZIP

ZHU:: 2010 Housing Unit Count of the 2010 ZCTA

Total ZIP Area

ZAREA:: Total Area of the 2010 ZCTA in square meters

ZIP Area Land

ZAREALAND:: Total Land Area of the 2010 ZCTA in square meters

2010 Place Population

PLPOP:: 2010 Population of the 2010 Place

Place Housing Units

PLHU:: 2010 Housing Unit Count of the 2010 Place

Area of Place

PLAREA:: Total Area of the 2010 Place in square meters

Land Area of Place

PLAREALAND:: Total Land Area of the 2010 Place in square meters

Pop % to Record

ZPOPPCT:: The Percentage of Total Population of the 2010 ZCTA represented by the record

% of Record Pop. to ZIP

ZHUPCT:: The Percentage of Total Housing Unit Count of the 2010 ZCTA represented by the record

% of Record area to ZIP area

ZAREAPCT:: The Percentage of Total Area of the 2010 ZCTA represented by the record

% Record Land to ZIP Land

ZAREALANDPCT:: The Percentage of Total Land Area of the 2010 ZCTA represented by the record

% of Place to Total Pop.

PLPOPPCT:: The Percentage of Total Population of the 2010 Place represented by the record

% Housing Count to Record

PLHUPCT:: The Percentage of Total Housing Unit Count of the 2010 Place represented by the record

% Area of Place to Record

PLAREAPCT:: The Percentage of Total Area of the 2010 Place represented by the record

% Land Place to Record

PLAREALANDPCT:: The Percentage of Total Land Area of the 2010 Place represented by the record

SSA State County Code

The 5-digit code indicating the State and County as set by the Social Security Administration. The first 2 digits are the State Code, the last 3 digits are the County Code.

This number is analogous to the FIPS codes set by the Census. Use this field to crosswalk the SSA State/County to FIPS State/County codes.

Medicare CBSA Code

The CBSA Code to use for this County in Medicare billing. Medicare pays for home health services using a transitional wage index. Due to the wage index transition, Home Health Agencies (HHAs) may serve beneficiaries in areas where there is more than one unique Core-Based Statistical Area (CBSA).

Source: County to CBSA Crosswalk File: https://www.cms.gov/Medicare/Medicare-Fee-forService-Payment/AcuteInpatientPPS/FY2016-IPPS-Final-Rule-Home-Page-Items/FY2016-IPPSFinal-Rule-Data-Files.html

Medicare CBSA Name

The CBSA Name to use for this County in Medicare billing. Medicare pays for home health services using a transitional wage index. Due to the wage index transition, Home Health Agencies (HHAs) may serve beneficiaries in areas where there is more than one unique Core-Based Statistical Area (CBSA).

Source: County to CBSA Crosswalk File: https://www.cms.gov/Medicare/Medicare-Fee-forService-Payment/AcuteInpatientPPS/FY2016-IPPS-Final-Rule-Home-Page-Items/FY2016-IPPSFinal-Rule-Data-Files.html

Medicare CBSA Type

The CBSA Type to use for this County in Medicare billing (Metro or Micro). Medicare pays for home health services using a transitional wage index. Due to the wage index transition, Home Health Agencies (HHAs) may serve beneficiaries in areas where there is more than one unique Core-Based Statistical Area (CBSA).

Source: County to CBSA Crosswalk File: https://www.cms.gov/Medicare/Medicare-Fee-forService-Payment/AcuteInpatientPPS/FY2016-IPPS-Final-Rule-Home-Page-Items/FY2016-IPPSFinal-Rule-Data-Files.html

MarketRatingAreaID

The Insurance Market Rules and Rate Review Final Rule (45 CFR Part 147) provide that each state will have a set number of geographic rating areas that all issuers in the state must uniformly use as part of their rate setting.

The Rating Market Area ID identifies which market rating the given ZIP Code should be part of.

Source: The Center for Consumer Information & Insurance Oversight: https://www.cms.gov/CCIIO/Programs-and-Initiatives/Health-Insurance-Market-Reforms/stategra.html