Data Last Updated: July 1, 2025

Somerset County, NJ ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Somerset, NJ.	36 ZIP Codes (23 General, 7 PO Box, 0 Unique, & 6 Multi County) [More Details]
Area Codes: The Telephone Area Codes that are associated with Somerset, 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.	609, 640, 732, 848, 908, 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 Somerset, 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.	345,361 [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.	34035
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 Somerset, 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.	302 square miles
Water Area: The approximate amount of water area covered by Somerset, 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 Somerset County, NJ.	-74.616348, 40.563493
Quick Link: Copy the direct link to the Somerset, NJCounty page and use anywhere you like!	https://www.zip-codes.com/county/nj-somerset.asp

Somerset, NJ ZIP Code Boundaries

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Somerset County, NJ Covers 36 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 07059	General	Warren	16,096	4.66%
ZIP Code 07060 *	General	Plainfield	48,423	--
ZIP Code 07062 *	General	Plainfield	14,196	--
ZIP Code 07063 *	General	Plainfield	14,745	--
ZIP Code 07069	General	Watchung	6,696	1.94%
ZIP Code 07920	General	Basking Ridge	27,912	8.08%
ZIP Code 07921	General	Bedminster	7,733	2.24%
ZIP Code 07924	General	Bernardsville	7,650	2.22%
ZIP Code 07931	General	Far Hills	3,422	0.99%
ZIP Code 07934	General	Gladstone	1,430	0.41%
ZIP Code 07938	P.O. Box	Liberty Corner	0	0.00%
ZIP Code 07939	General	Lyons	459	0.13%
ZIP Code 07977	P.O. Box	Peapack	939	0.27%
ZIP Code 07978	P.O. Box	Pluckemin	0	0.00%
ZIP Code 08502	General	Belle Mead	11,636	3.37%
ZIP Code 08504	P.O. Box	Blawenburg	0	0.00%
ZIP Code 08525 *	General	Hopewell	4,649	--
ZIP Code 08528	General	Kingston	401	0.12%
ZIP Code 08540 *	General	Princeton	48,216	--
ZIP Code 08553	General	Rocky Hill	743	0.22%
ZIP Code 08558	General	Skillman	7,754	2.25%
ZIP Code 08805	General	Bound Brook	13,948	4.04%
ZIP Code 08807	General	Bridgewater	39,299	11.38%
ZIP Code 08812 *	General	Dunellen	14,593	--
ZIP Code 08821	P.O. Box	Flagtown	391	0.11%
ZIP Code 08823	General	Franklin Park	9,282	2.69%
ZIP Code 08835	General	Manville	10,953	3.17%
ZIP Code 08836	General	Martinsville	3,908	1.13%
ZIP Code 08844	General	Hillsborough	43,333	12.55%
ZIP Code 08853	General	Neshanic Station	5,445	1.58%
ZIP Code 08869	General	Raritan	7,835	2.27%
ZIP Code 08873	General	Somerset	55,500	16.07%
ZIP Code 08875	P.O. Box	Somerset	0	0.00%
ZIP Code 08876	General	Somerville	22,849	6.62%
ZIP Code 08880	General	South Bound Brook	4,872	1.41%
ZIP Code 08890	P.O. Box	Zarephath	43	0.01%

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

Important Somerset, NJ Information

Somerset County, NJ Covers 36 ZIP Codes. This includes 23 General ZIP Codes, 7 PO Box ZIP Codes, and 0 Unique (reserved for Business and Volume Mail Receivers). There are also 6 Multi County ZIP Codes. These records are assigned a different primary county, but they partially cover area in Somerset County.

The population for Somerset County is 345,361, according to the U.S. Census. Population Density is 1,143.58 persons per square mile. With 131,822 Housing Units, the Average Household Size is 2.72 persons. There are 125,598 Family Households with an Average Family Size of 2.85 persons. 5.09% of the population is without Health Insurance. The 66.37% Employment Rate is 6.57% above the national average of 59.8%.244,416 people aged 25+ have some educational achievement, with 57.35% (or 140,175 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

There are 6 area codes serving this area including609, 640, 732, 848, 908 and 973. Somerset is also located in the Eastern timezone and the current local time is shown above.

Somerset 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 Somerset, NJ have 120,275 Residential mailboxes and 7,903 Business mailboxes.There are 8,982 businesses with a total of 174,271 employees. That is an average of 19.4 employees per business. Annual payroll for these businesses is $17,575,643,000. Other Demographics

Somerset County Demographic Profile

Population & People

Total Population

345,361

Income

Median Household Income

$135,960

Housing

Total Housing Units

131,822

Health

Without Healthcare Coverage

5.09%

Business & Economy

Total Businesses

8,982

Families

Total Households

125,598

Employment

Employment Rate

66.37%

Education

Bachelor's Degree or Higher

57.35%

Total Population: Total number of people from the 2020 U.S. Census for Somerset, 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.	345,361
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Somerset, 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.	324,239
Total Households: Total number of Households from the 2020 U.S. Census for Somerset, NJ. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	125,598
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.	131,822
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.	2.72
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.	2.85

Other Somerset Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	120,275
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	7,903
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.	174,381
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	78,865
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	6,483

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	8,982
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$5,099,142,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$17,575,643,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	174,271

Sum of all ZIP Codes assigned Somerset, 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