Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — STATE/NJ/COUNTY/SOMERSET

Somerset County, NJ ZIP codes

There are 31 ZIP codes in Somerset County, NJ, in 30 towns, from 07059 to 08890. The largest are 08873 (Somerset), 08844 (Hillsborough) and 08807 (Bridgewater).

The county seat is Somerville.

ZIP codes
31
Towns
30
County seat
Somerville
County FIPS
34035
Population
349,846
Median household income
$140,374
Land area
302 sq mi
Area codes
732, 848, 908, 973

Somerset County ZIP codes by town

Somerville (county seat)
08876

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Somerset County ZIP codes

07059070690792007921079240793107934079380793907977079780850208504085280855308558088050880708812088210882308835088360884408853088690887308875088760888008890

The ZIP codes of Somerset County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Somerset County in numbers

About 349,846 people live in Somerset County, in 130,802 households, the 13th most populous of New Jersey's 21 counties. The median household income is $140,374 a year, 36% above the New Jersey median of $103,556 (US: $80,734). The median owner-occupied home is valued at $552,100 (22% above the New Jersey median), and median gross rent is $2,033 a month. The median age is 41.8; 57.8% of adults 25 and over hold a bachelor's degree or higher (43.6% across New Jersey); the average commute takes 31 minutes.

Population349,846Somerset349,846
Households130,802Somerset130,802
Median age41.8Somerset41.8New Jersey40.1US 38.9
Median household income$140,374Somerset$140,374New Jersey$103,556US $80,734
Median home value$552,100Somerset$552,100New Jersey$454,400US $332,700
Median gross rent$2,033Somerset$2,033New Jersey$1,720US $1,413
Bachelor's degree or higher57.8%Somerset57.8%New Jersey43.6%US 35.7%
Mean commute31.4 minSomerset31.4 minNew Jersey30.5 minUS 26.4 min
Population density1,159 / sq miSomerset1,159 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Somerset County

Largest towns in Somerset County
TownZIP codesPopulation
Bridgewater 1 39,560
Somerset 2 22,720
Hillsborough 1 22,585
Warren 1 16,811
Somerville 1 13,410
Franklin Park 1 13,211
Bound Brook 1 12,219
Martinsville 1 11,559
Manville 1 10,921
Raritan 1 8,368
Basking Ridge 1 7,917
Bernardsville 1 7,916
Dunellen 1 7,911
Watchung 1 6,485
Belle Mead 1 6,394

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Somerset County.

Not sure you are in Somerset County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Somerset County, with figures

ZIP codes in Somerset County
ZIP City Type Population Median income Median home
07059 Warren , NJ Standard 16,811 $212,479 $921,500
07069 Watchung , NJ Standard 6,623 $171,705 $883,300
07920 Basking Ridge , NJ Standard 28,753 $192,857 $799,900
07921 Bedminster , NJ Standard 7,700 $123,104 $433,300
07924 Bernardsville , NJ Standard 7,713 $236,042 $785,100
07931 Far Hills , NJ Standard 2,985 $201,078 $1,165,700
07934 Gladstone , NJ Standard 1,293 $245,429 $845,500
07938 Liberty Corner , NJ No street area — — —
07939 Lyons , NJ Standard 322 — —
07977 Peapack , NJ Standard 917 $150,875 $870,600
07978 Pluckemin , NJ No street area — — —
08502 Belle Mead , NJ Standard 11,849 $227,242 $816,700
08504 Blawenburg , NJ No street area — — —
08528 Kingston , NJ Standard 321 — $233,500
08553 Rocky Hill , NJ Standard 819 $148,056 $597,200
08558 Skillman , NJ Standard 7,648 $236,016 $910,200
08805 Bound Brook , NJ Standard 14,066 $93,341 $417,800
08807 Bridgewater , NJ Standard 39,560 $168,696 $591,200
08812 Dunellen , NJ Standard 14,224 $118,316 $442,900
08821 Flagtown , NJ Standard 283 $155,833 $443,300
08823 Franklin Park , NJ Standard 8,884 $115,597 $298,800
08835 Manville , NJ Standard 10,921 $93,333 $354,300
08836 Martinsville , NJ Standard 3,855 $229,726 $743,700
08844 Hillsborough , NJ Standard 44,463 $153,556 $547,700
08853 Neshanic Station , NJ Standard 5,634 $220,725 $773,400
08869 Raritan , NJ Standard 8,368 $107,672 $456,900
08873 Somerset , NJ Standard 56,327 $124,972 $465,800
08875 Somerset , NJ No street area — — —
08876 Somerville , NJ Standard 23,380 $122,884 $485,100
08880 South Bound Brook , NJ Standard 4,867 $112,961 $359,000
08890 Zarephath , NJ Standard 17 — —

Cite this page

zipcodes.pro. “Somerset County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/nj/county/somerset

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