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ZIP Code Database - Facts & Stats
Data Last Updated: November 1, 2024

JEFFERSON County, KY ZIP Codes



JEFFERSON County, KY Covers 73 ZIP Codes

ZIP CodeClassificationCityPopulationTimezoneArea Code(s)
ZIP Code 40018P.O. BoxEastwood0Eastern502
ZIP Code 40023GeneralFisherville5,956Eastern502
ZIP Code 40025P.O. BoxGlenview491Eastern502
ZIP Code 40027P.O. BoxHarrods Creek0Eastern502
ZIP Code 40041GeneralMasonic Home545Eastern502
ZIP Code 40059GeneralProspect20,254Eastern502
ZIP Code 40118GeneralFairdale10,017Eastern502
ZIP Code 40201P.O. BoxLouisville0Eastern502
ZIP Code 40202GeneralLouisville7,179Eastern502
ZIP Code 40203GeneralLouisville16,801Eastern502
ZIP Code 40204GeneralLouisville14,600Eastern502
ZIP Code 40205GeneralLouisville24,077Eastern502
ZIP Code 40206GeneralLouisville20,196Eastern502
ZIP Code 40207GeneralLouisville30,104Eastern502
ZIP Code 40208GeneralLouisville17,048Eastern502
ZIP Code 40209GeneralLouisville426Eastern502
ZIP Code 40210GeneralLouisville14,418Eastern502
ZIP Code 40211GeneralLouisville21,310Eastern502
ZIP Code 40212GeneralLouisville16,360Eastern502
ZIP Code 40213GeneralLouisville16,698Eastern502
ZIP Code 40214GeneralLouisville46,220Eastern502
ZIP Code 40215GeneralLouisville21,230Eastern502
ZIP Code 40216GeneralLouisville43,434Eastern502
ZIP Code 40217GeneralLouisville13,061Eastern502
ZIP Code 40218GeneralLouisville33,437Eastern502
ZIP Code 40219GeneralLouisville40,300Eastern502
ZIP Code 40220GeneralLouisville34,315Eastern502
ZIP Code 40221P.O. BoxLouisville2Eastern502
ZIP Code 40222GeneralLouisville21,725Eastern502
ZIP Code 40223GeneralLouisville23,227Eastern502
ZIP Code 40224P.O. BoxLouisville0Eastern502
ZIP Code 40225UniqueLouisville0Eastern502
ZIP Code 40228GeneralLouisville18,655Eastern502
ZIP Code 40229GeneralLouisville39,380Eastern502
ZIP Code 40231P.O. BoxLouisville0Eastern502
ZIP Code 40232P.O. BoxLouisville0Eastern502
ZIP Code 40233P.O. BoxLouisville0Eastern502
ZIP Code 40241GeneralLouisville31,016Eastern502
ZIP Code 40242GeneralLouisville10,686Eastern502
ZIP Code 40243GeneralLouisville11,521Eastern502
ZIP Code 40245GeneralLouisville37,866Eastern502
ZIP Code 40250P.O. BoxLouisville0Eastern502
ZIP Code 40251P.O. BoxLouisville0Eastern502
ZIP Code 40252P.O. BoxLouisville0Eastern502
ZIP Code 40253P.O. BoxLouisville0Eastern502
ZIP Code 40255P.O. BoxLouisville0Eastern502
ZIP Code 40256P.O. BoxLouisville0Eastern502
ZIP Code 40257P.O. BoxLouisville0Eastern502
ZIP Code 40258GeneralLouisville26,807Eastern502
ZIP Code 40259P.O. BoxLouisville0Eastern502
ZIP Code 40261P.O. BoxLouisville0Eastern502
ZIP Code 40266UniqueLouisville0Eastern502
ZIP Code 40268P.O. BoxLouisville0Eastern502
ZIP Code 40269P.O. BoxLouisville0Eastern502
ZIP Code 40270P.O. BoxLouisville0Eastern502
ZIP Code 40272GeneralLouisville37,747Eastern502
ZIP Code 40280UniqueLouisville177Eastern502
ZIP Code 40281UniqueLouisville0Eastern502
ZIP Code 40282UniqueLouisville0Eastern502
ZIP Code 40283UniqueLouisville0Eastern502
ZIP Code 40285P.O. BoxLouisville0Eastern502
ZIP Code 40287UniqueLouisville0Eastern502
ZIP Code 40289UniqueLouisville0Eastern502
ZIP Code 40290P.O. BoxLouisville0Eastern502
ZIP Code 40291GeneralLouisville39,719Eastern502
ZIP Code 40292UniqueLouisville0Eastern502
ZIP Code 40293GeneralLouisville0Eastern502
ZIP Code 40294UniqueLouisville0Eastern502
ZIP Code 40295P.O. BoxLouisville0Eastern502
ZIP Code 40296UniqueLouisville0Eastern502
ZIP Code 40297UniqueLouisville0Eastern502
ZIP Code 40298P.O. BoxLouisville0Eastern502
ZIP Code 40299GeneralLouisville43,030Eastern502


Timezone(s): All Time Zones found within this county. In the United States, there are 7 standard time zones which are, from west to east: Hawaii-Aleutian, Alaska, Pacific, Mountain, Central, Eastern, Atlantic. Also included in U.S. Territories are Samoa, Guam and Palau. The alignment between ZIP codes and time zones is not perfect. A single time zone can cover multiple ZIP codes, and, conversely, a single ZIP code could theoretically span across multiple time zones, although this is quite rare.Eastern
 
Population: The total Population for Jefferson County, KY, taken from the 2020 U.S. Census DP1. This population total includes all people residing in and counts them regardless of citizenship or immigration status. Include are U.S. Citizens, permanent residents, temporary migrants, and undocumented workers. The total population represents people who live in the state, not just those present on the day of the census. State Population is critical in determining political representation, funding allocation, planning and policy-making, and demographic analysis. 782,969 (More Details)
Male Population: The sum of all males for Jefferson County, KY from the 2020 U.S. Census DP1. Each respondent self-identified their gender on the survey, as they were asked to indicate their gender assigned at birth. The male population information is important for healthcare planning, policy making, social research, and economic planning and development.379,349
Female Population: The sum of all females for Jefferson County, KY from the 2020 U.S. Census DP1. Each respondent self-identified their gender on the survey, as they were asked to indicate their gender assigned at birth. The female population information is important for healthcare planning, policy making, social research, and economic planning and development.403,620
Median Age: The median age of the total population of this county. Median age is not a future prediction, it is the actual number from the 2020 Census. Median age is the middle age of the population. Half the population is older than the average age and half is younger.39
 
ZIP Codes: The total number of ZIP Codes which at least partially fall inside Jefferson County, KY. Did you know that approximately 23% of ZIP Codes cross county lines? Several even cross State lines. ZIP Codes do not follow other geographic boundaries because they were created exclusively for the expedient delivery of mail.73
Cities: The total number of City names which are associated with ZIP Codes that partially or wholly cross into Jefferson County, KY. Alongside the official city name, USPS also recognizes certain alternate names for cities or towns that can be used in mailing addresses. These may include towns, villages, abbreviations, names in other languages, or names that have been commonly used historically.8
Counties: The total number of counties associated with ZIP Codes that are at least partially part of Jefferson County, KY.1
Area Codes: The total number of Area Codes associated with ZIP Codes in Jefferson County, KY. Area codes are used in the North American Numbering Plan (NANP) to facilitate phone routing. Each area code identifies a specific geographic area (usually part of a state or territory) and allows calls to be routed to the correct area. There are approximately 350 area codes in use in the United States.1
 
Total Area: The approximate amount of area covered by Jefferson, KY in square miles. This includes all land and water areas within the legal county boundaries.398 square miles (county)
Land Area: The approximate amount of land area covered by Jefferson, KY in square miles. Land area data provided by the Census Bureau are based on geographic boundaries that include the mainland, islands, inland, coastal, Great Lakes, and territorial waters associated with each state. Land area is important in many types of statistical analysis. For example, population density, the number of people per unit of land area, is a commonly used statistic based on this data. Land area measurements are also important for urban planning, environmental studies, and economic analysis. 380 square miles (county)
Water Area: The approximate amount of water area covered by Jefferson, KY in square miles. Calculations for water area take into account inland bodies of water, coastal regions, Great Lakes, and territorial sea waters. This encompassed features such as lakes, reservoirs, rivers, and coastal water bodies. Water surface data are especially important for environmental and conservation planning, water resource management, transportation, and recreational planning.17 square miles (county)

JEFFERSON, KY Demographic Information

* Demographic data is based on 2020 Census.

Total population of JEFFERSON County, KY: Total Population from the 2020 Census. This reflects the exact population of the geographic area at that point in time, not future estimates, regardless of citizenship or immigration status. It is intended to count all persons living within the geographic area, not just those present on the day of the census.782,969
Male population of JEFFERSON County, KY: The Male Population from the 2020 Census. This is not a forecast for the future, but an exact count for this geographic area at the time of the Census. Each respondent self-identified their gender on the survey, as they were asked to indicate their gender assigned at birth. The Male Population information is important for healthcare planning, policy making, social research, and economic planning and development.379,349
Female population of JEFFERSON County, KY: The Female Population from the 2020 Census. This is not a forecast for the future, but an exact count for this geographic area at the time of the Census. Each respondent self-identified their gender on the survey, as they were asked to indicate their gender assigned at birth. The Female Population information is important for healthcare planning, policy making, social research, and economic planning and development.403,620
Median age (years): The Median Age of the Total Population from the 2020 Census for this geographic area. Median age is not a future prediction, it is the actual calculated age from the 2020 Census. Median age is the middle age of the population. Half the population is older than the average age and half is younger. Median Age can relate how young or old a geographic area is compared to others. If one area is 44 and the other is 40, then the first are is an average of 4 years older.38.7
White Population: The White Population is an exact count from the 2020 Census for this geographic area. The numbers for the White Population are not future projections. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including White. This count includes all who selected White/Caucasian in their response, even if they selected another race as well.499,868
Black Population: The Black Population is an exact count from the 2020 Census for this geographic area. The numbers for the Black Population are not future projections. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including Black or African American. This count includes all who selected Black or African American in their response, even if they selected another race as well.168,910
Indian Population: The American Indian and Alaska Native Population is an exact count from the 2020 Census for this geographic area and not estimates for the future. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including American Indian and Alaska Native. This count includes all who selected American Indian and Alaska Native in their response, even if they selected another race as well.2,502
Asian Population: The Asian Population is an exact count from the 2020 Census for this geographic area, not future projections. On the U.S. Census questionnaire, people were asked to check all races which applied to them, including Chinese, Filipino, Asian Indian, Vietnamese, Korean, Japanese, or Other Asian. This count includes all who selected one of these options in their response, even if they selected another race as well.27,115
Hawaiian Population: The Hawaiian or Pacific Islander Population is an exact count from the 2020 Census for this geographic area and are not future projections. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including Native Hawaiian and Pacific Islander. This count includes all who selected either Hawaiian or Pacific Islander in their response, even if they selected another race as well.612
Hispanic Population: The Hispanic Population is an exact count from the 2020 Census for this geographic area and is not an estimate or future projection. On the 2020 U.S. Census questionnaire, people were first asked for their Ethnicity, including if they were from Hispanic, Latino, or Spanish Origin, including Mexican, Mexican American, Chicano, Puerto Rican, Cuban, or other ethnic origin. This count includes all who affirmed that they were part of this ethnic origin. Respondents who selected this option were also asked to select a race separately and would be counted once in this number as well as the race they chose as well. From the U.S. Census definition, Hispanic is an ethnic origin and not a race.59,021
Median age (Male): The Median Age of all Males from the 2020 Census for this geographic area. The Male Median Age is the actual average from the 2020 Census, not an estimate or future projection. Median Age is the average age of the population. Half of the population is older than the average age and the other half is younger. Gender is self-reported by individuals when asked about their sex at birth.37.4
Median age (Female): The Median Age of all Females from the 2020 Census for this geographic area. The Female Median Age is the actual average from the 2020 Census, not an estimate or future projection. Median Age is the average age of the population. Half of the population is older than the average age and the other half is younger. Gender is self-reported by individuals when asked about their sex at birth.40.0
Total Households: Total Number of Households from the 2020 U.S. Census for this geographic area. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.328,169
Married-Couple Households: Total Married-Couple Households is based on the 2020 U.S. Census and is not an estimate. Under the U.S. Census Bureau definition, Married Couple Households refers to the count of households where the householder and his or her spouse are listed as members of the same household. It does include same-sex marriage households and the households themselves may also include other individuals, such as children or other relatives. 
Average Household Size for JEFFERSON County, KY: The Average Household Size, is obtained by dividing the number of people in Households (excluding those in group quarters, nursing home, prisons, and dorm rooms) by the number of Households. A Household includes everyone living in a residential unit. Those who do not live in a household are classified as living in group accommodation. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.2.34
Average family size of JEFFERSON County, KY: Average Family Size is calculated by dividing the number of people in a Family Household by the number of Family Households. The U.S. Census Bureau defines family households as households consisting of two or more individuals who are related by birth, marriage, or adoption. They also may include other unrelated people. Non-family households consist of people who live alone or who share their residence with unrelated individuals. The Average Family Size only looks at the households classified as Family Households. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.3.27
Total housing units for JEFFERSON County, KY: The total number of Housing Units is the number of occupied units + the number of vacant units. Ownership is defined by whether the unit is occupied by an owner or by a tenant. Owner occupancy means that the owner lives in the unit. This value comes from the 2020 U.S. Census and is not a projection or estimate.356,887


JEFFERSON County, KY Covers 8 Cities