Data Last Updated: July 1, 2025

Union County, NJ ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Union, NJ.	31 ZIP Codes (26 General, 4 PO Box, 0 Unique, & 1 Multi County) [More Details]
Area Codes: The Telephone Area Codes that are associated with Union, NJ. 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.	732, 848, 908, 862, 973
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.	Eastern
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 Union, NJ 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.	575,345 [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.	34039
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.	New York-Newark-Jersey City, NY-NJ
Land Area: The approximate amount of land area covered by Union, NJ 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.	103 square miles
Water Area: The approximate amount of water area covered by Union, NJ 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.	3 square miles
Coordinates: The latitude/longitude centroid coordinates for Union County, NJ.	-74.309989, 40.660104
Quick Link: Copy the direct link to the Union, NJCounty page and use anywhere you like!	https://www.zip-codes.com/county/nj-union.asp

Union, NJ ZIP Code Boundaries

Download ZIP Code Database

Load Union County, NJ Map

Union County, NJ Covers 31 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 07016	General	Cranford	23,827	4.14%
ZIP Code 07023	General	Fanwood	7,774	1.35%
ZIP Code 07027	General	Garwood	4,454	0.77%
ZIP Code 07033	General	Kenilworth	8,427	1.46%
ZIP Code 07036	General	Linden	45,161	7.85%
ZIP Code 07060	General	Plainfield	48,423	8.42%
ZIP Code 07061	P.O. Box	Plainfield	0	0.00%
ZIP Code 07062	General	Plainfield	14,196	2.47%
ZIP Code 07063	General	Plainfield	14,745	2.56%
ZIP Code 07065	General	Rahway	29,556	5.14%
ZIP Code 07066	General	Clark	15,555	2.70%
ZIP Code 07076	General	Scotch Plains	24,871	4.32%
ZIP Code 07081	General	Springfield	17,200	2.99%
ZIP Code 07083	General	Union	56,131	9.76%
ZIP Code 07088	General	Vauxhall	3,580	0.62%
ZIP Code 07090	General	Westfield	31,056	5.40%
ZIP Code 07091	P.O. Box	Westfield	0	0.00%
ZIP Code 07092	General	Mountainside	7,082	1.23%
ZIP Code 07201	General	Elizabeth	29,390	5.11%
ZIP Code 07202	General	Elizabeth	43,389	7.54%
ZIP Code 07203	General	Roselle	22,715	3.95%
ZIP Code 07204	General	Roselle Park	13,984	2.43%
ZIP Code 07205	General	Hillside	22,432	3.90%
ZIP Code 07206	General	Elizabethport	30,982	5.38%
ZIP Code 07207	P.O. Box	Elizabeth	0	0.00%
ZIP Code 07208	General	Elizabeth	33,561	5.83%
ZIP Code 07901	General	Summit	24,199	4.21%
ZIP Code 07902	P.O. Box	Summit	0	0.00%
ZIP Code 07922	General	Berkeley Heights	12,311	2.14%
ZIP Code 07974	General	New Providence	13,122	2.28%
ZIP Code 08812 *	General	Dunellen	14,593	--

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

Important Union, NJ Information

Union County, NJ Covers 31 ZIP Codes. This includes 26 General ZIP Codes, 4 PO Box ZIP Codes, and 0 Unique (reserved for Business and Volume Mail Receivers). There is also 1 Multi County ZIP Code in this area. This record is assigned to a different county, but it does partially cover area in Union County.

The population for Union County is 575,345, according to the U.S. Census. Population Density is 5,585.87 persons per square mile. With 209,908 Housing Units, the Average Household Size is 2.84 persons. There are 200,372 Family Households with an Average Family Size of 3.14 persons. 11.38% of the population is without Health Insurance. The 64.75% Employment Rate is 4.95% above the national average of 59.8%.390,558 people aged 25+ have some educational achievement, with 38.56% (or 150,614 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

There are 5 area codes serving this area including732, 848, 908, 862 and 973. Union is also located in the Eastern timezone and the current local time is shown above.

Union is part of the New York-Newark-Jersey City, NY-NJ Core Based Statistical Area (CBSA). Its CBSA Code is 35620.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 Union, NJ have 211,244 Residential mailboxes and 16,320 Business mailboxes.There are 14,714 businesses with a total of 206,550 employees. That is an average of 14.0 employees per business. Annual payroll for these businesses is $15,425,795,000. Other Demographics

Union County Demographic Profile

Population & People

Total Population

575,345

Income

Median Household Income

$100,117

Housing

Total Housing Units

209,908

Health

Without Healthcare Coverage

11.38%

Business & Economy

Total Businesses

14,714

Families

Total Households

200,372

Employment

Employment Rate

64.75%

Education

Bachelor's Degree or Higher

38.56%

Total Population: Total number of people from the 2020 U.S. Census for Union, NJ. 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.	575,345
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Union, NJ. 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.	600,042
Total Households: Total number of Households from the 2020 U.S. Census for Union, NJ. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	200,372
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.	209,908
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.	2.84
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.	3.14

Other Union Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	211,244
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	16,320
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.	255,622
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	154,587
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	35,466

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	14,714
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$4,029,677,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$15,425,795,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	206,550

Sum of all ZIP Codes assigned Union, NJ as their primary County.

References

U.S. Postal Service [Last Updated: 7/1/2025], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 7/1/2025], 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