Data Last Updated: January 1, 2025

Jefferson County, CO ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Jefferson, CO.	40 ZIP Codes (23 General, 11 PO Box, 1 Unique, & 5 Multi County) [More Details]
Area Codes: The Telephone Area Codes that are associated with Jefferson, CO. Area Codes are used in the North American Numbering Plan (NANP) to facilitate phone routing. There are approximately 350 area codes in use in the United States.	303, 720, 983
Timezone: Time zone designation within the U.S. Please note that not all areas in the U.S. observe daylight saving time which can affect actual local time for this city. 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.	Mountain
Local Time: The current local time for each timezone. If more than 1 time zone for this area, all local times will be shown. Counties can cross timezones, so more than 1 may be shown.	12:00:00 AM
Population: The population of Jefferson, CO from the U.S. Census 2020. Included are U.S. Citizens, permanent residents, temporary migrants, and undocumented individuals. The total population represents people who live in the city, not just those present while the Census was being completed.	582,910 [More Details]
FIPS: FIPS stands for Federal Information Processing Standards, which are a set of publicly announced standards for computer systems. A county FIPS code is a unique numeric identifier for a county in the United States, assigned by the National Institute of Standards and Technology (NIST). County FIPS codes have five digits, with the first two digits identifying the state and the last 3 indicating the county.	08059
CBSA: A Core Based Statistical Area (CBSA) is the recognized term for a region that functions around an urban core with a population of at least 10,000 people, according to the standards set by the Office of Management and Budget (OMB) in 2000. A CBSA is divided into two subsets: Metro and Micro, and these classifications are determined by population density. A Micro area is identified by a population ranging between 10,000 to 50,000, while a Metro area is defined as having a population that exceeds 50,000.	Denver-Aurora-Centennial, CO
Land Area: The approximate amount of land area covered by Jefferson, CO in square miles. The Land Area provided by the Census Bureau is based on geographic boundaries that include the mainland, islands, inland, coastal, Great Lakes, and territorial waters associated with each city.	764 square miles
Water Area: The approximate amount of water area covered by Jefferson, CO in square miles. Calculations by the Census Bureau for Water Area take into account inland bodies of water, coastal regions, Great Lakes, and territorial sea waters. This encompasses features such as lakes, reservoirs, rivers, and coastal water bodies.	10 square miles
Coordinates: The latitude/longitude centroid coordinates for Jefferson County, CO.	-105.250467, 39.586424
Quick Link: Copy the direct link to the Jefferson, COCounty page and use anywhere you like!	https://www.zip-codes.com/county/co-jefferson.asp

Jefferson, CO ZIP Code Boundaries

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Jefferson County, CO Covers 40 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 80001	P.O. Box	Arvada	0	0.00%
ZIP Code 80002	General	Arvada	20,267	3.48%
ZIP Code 80003	General	Arvada	36,258	6.22%
ZIP Code 80004	General	Arvada	36,076	6.19%
ZIP Code 80005	General	Arvada	28,742	4.93%
ZIP Code 80006	P.O. Box	Arvada	0	0.00%
ZIP Code 80007	General	Arvada	17,997	3.09%
ZIP Code 80020 *	General	Broomfield	52,141	--
ZIP Code 80021	General	Broomfield	36,176	6.21%
ZIP Code 80031 *	General	Westminster	37,254	--
ZIP Code 80033	General	Wheat Ridge	26,618	4.57%
ZIP Code 80034	P.O. Box	Wheat Ridge	0	0.00%
ZIP Code 80123	General	Littleton	47,302	8.11%
ZIP Code 80125 *	General	Littleton	12,482	--
ZIP Code 80127	General	Littleton	44,776	7.68%
ZIP Code 80128	General	Littleton	36,699	6.30%
ZIP Code 80135 *	General	Sedalia	4,100	--
ZIP Code 80162	P.O. Box	Littleton	0	0.00%
ZIP Code 80212 *	General	Denver	20,397	--
ZIP Code 80214	General	Denver	26,493	4.54%
ZIP Code 80215	General	Denver	19,908	3.42%
ZIP Code 80225	P.O. Box	Denver	0	0.00%
ZIP Code 80226	General	Denver	33,142	5.69%
ZIP Code 80227	General	Denver	35,567	6.10%
ZIP Code 80228	General	Denver	34,836	5.98%
ZIP Code 80232	General	Denver	22,240	3.82%
ZIP Code 80235	General	Denver	8,639	1.48%
ZIP Code 80401	General	Golden	41,913	7.19%
ZIP Code 80402	P.O. Box	Golden	0	0.00%
ZIP Code 80403	General	Golden	21,335	3.66%
ZIP Code 80419	Unique	Golden	0	0.00%
ZIP Code 80425	P.O. Box	Buffalo Creek	273	0.05%
ZIP Code 80433	General	Conifer	8,209	1.41%
ZIP Code 80437	P.O. Box	Evergreen	0	0.00%
ZIP Code 80439	General	Evergreen	24,711	4.24%
ZIP Code 80453	P.O. Box	Idledale	259	0.04%
ZIP Code 80454	P.O. Box	Indian Hills	1,437	0.25%
ZIP Code 80457	P.O. Box	Kittredge	728	0.12%
ZIP Code 80465	General	Morrison	16,196	2.78%
ZIP Code 80470	General	Pine	3,684	0.63%

* Indicates a Multi County ZIP Code. These ZIP Codes partially cross over into Jefferson, CO, but will mostly cover area in a different County. Not included in % of Population calculations.

Important Jefferson, CO Information

Jefferson County, CO Covers 40 ZIP Codes. This includes 23 General ZIP Codes, 11 PO Box ZIP Codes, and 1 Unique (reserved for Business and Volume Mail Receivers). There are also 5 Multi County ZIP Codes. These records are assigned a different primary county, but they partially cover area in Jefferson County.

The population for Jefferson County is 582,910, according to the U.S. Census. Population Density is 762.97 persons per square mile. With 248,429 Housing Units, the Average Household Size is 2.42 persons. There are 237,676 Family Households with an Average Family Size of 2.93 persons. 4.79% of the population is without Health Insurance. The 66.55% Employment Rate is 6.75% above the national average of 59.8%.422,743 people aged 25+ have some educational achievement, with 47.91% (or 202,518 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

There are 3 area codes serving this area including303, 720 and 983. Jefferson is also located in the Mountain timezone and the current local time is shown above.

Jefferson is part of the Denver-Aurora-Centennial, CO Core Based Statistical Area (CBSA). Its CBSA Code is 19740.It is classified as a metro area, which means the combined population is 50,000 or more (at its core).

CBSAs are defined by the OMB as geographic areas that have at least one core with a population of 10,000 or more (for a micro area) and adjacent territory with a high degree of social and economic integration. CBSA codes are commonly used to accurately file Medicare claims and to verify applicable incentives using a patient's ZIP Code.

ZIP Codes in Jefferson, CO have 274,779 Residential mailboxes and 15,801 Business mailboxes.There are 19,491 businesses with a total of 235,222 employees. That is an average of 12.1 employees per business. Annual payroll for these businesses is $15,192,694,000. Other Demographics

Jefferson County Demographic Profile

Population & People

Total Population

582,910

Income

Median Household Income

$93,933

Housing

Total Housing Units

248,429

Health

Without Healthcare Coverage

4.79%

Business & Economy

Total Businesses

19,491

Families

Total Households

237,676

Employment

Employment Rate

66.55%

Education

Bachelor's Degree or Higher

47.91%

Total Population: Total number of people from the 2020 U.S. Census for Jefferson, CO. This reflects the exact count of this 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.	582,910
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Jefferson, CO. This 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 does not include population totals 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.	657,454
Total Households: Total number of Households from the 2020 U.S. Census for Jefferson, CO. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	237,676
Total Housing Units: 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.	248,429
Average Household Size: 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.	2.42
Average Family Size: 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.	2.93

Other Jefferson Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	274,779
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	15,801
Total Delivery Receptacles: The total number of delivery receptacles. This includes curb side mailboxes, centralized units, PO Boxes, NDCBU, and contract boxes. This count is for Residential and Business combined.	373,937
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	140,627
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	64,863

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	19,491
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$3,652,444,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$15,192,694,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	235,222

Sum of all ZIP Codes assigned Jefferson, CO as their primary County.

References

U.S. Postal Service [Last Updated: 1/1/2025], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 1/1/2025], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov