| ZIP Codes: | 30 ZIP Codes (23 Standard, 7 PO Box, 0 Unique) [See All] |
| Area Codes: | 609 / 640 / 732 / 848 / 908 / 973 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:10 PM |
| Population: | 314,379 [See All] |
| FIPS: | 34035 |
| CBSA: | New York-Newark-Jersey City, NY-NJ |
| Land Area: | 302 sq mi |
| Water Area: | 3 sq mi |
| Coordinates: | 40.5658, -74.6069 |
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314,379 residents live across 30 ZIPs covering 302 sq mi, served by 29 distinct USPS-recognized cities.
Population moved from 294,449 to 314,379 from 2014 to 2024 — a +6.8% change. 19 ZIPs gained residents, 7 lost.
The county's wealthiest ZIP 07934 (Gladstone, $245,429 median) and poorest ZIP 08835 (Manville, $93,333) are 12.7 miles apart — a 2.6× income gap across local geography.
Median home values vary 3.9× across this county — from $298,800 in 08823 (Franklin Park) to $1,165,700 in 07931 (Far Hills).
Density varies 47× across the county — from 135 people/sq mi in 07931 (Far Hills) to 6,427 in 08880 (South Bound Brook).
Educational attainment ranges from 23.9% bachelor's+ in 08880 (South Bound Brook) to 79.3% in 08558 (Skillman) — the breadth of educational profiles across the area.
Within New Jersey, this is the #13 most populous of 21 counties and ranks #1 for median household income with the #5 fastest decade growth .
On the national stage, Somerset County is ranks #9 for income .
Weighted by population, the typical household earns about $156,492 across the county — reflecting what a typical resident sees, not a simple ZIP average.
59.6% of adults age 25+ hold a bachelor's degree or higher (133,458 of 224,086 reporting).
23 Standard delivery, 7 PO Box only, 0 single-entity Unique ZIPs serve this county.
13 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 08873 | Somerset | Standard | 56,327 | $124,972 | 32.7 | 8.9% |
| 08844 | Hillsborough | Standard | 44,463 | $153,556 | 54.8 | 13.0% |
| 08807 | Bridgewater | Standard | 39,560 | $168,696 | 25.8 | 3.4% |
| 07920 | Basking Ridge | Standard | 28,753 | $192,857 | 28.0 | 6.7% |
| 08876 | Somerville | Standard | 23,380 | $122,884 | 15.7 | 4.7% |
| 07059 | Warren | Standard | 16,811 | $212,479 | 20.4 | 6.9% |
| 08805 | Bound Brook | Standard | 14,066 | $93,341 | 3.1 | 13.1% |
| 08502 | Belle Mead | Standard | 11,849 | $227,242 | 13.6 | 2.3% |
| 08835 | Manville | Standard | 10,921 | $93,333 | 2.4 | 4.7% |
| 08823 | Franklin Park | Standard | 8,884 | $115,597 | 3.5 | -5.5% |
| 08869 | Raritan | Standard | 8,368 | $107,672 | 2.9 | 14.3% |
| 07924 | Bernardsville | Standard | 7,713 | $236,042 | 12.7 | -0.1% |
| 07921 | Bedminster | Standard | 7,700 | $123,104 | 18.6 | -2.9% |
| 08558 | Skillman | Standard | 7,648 | $236,016 | 15.7 | 14.5% |
| 07069 | Watchung | Standard | 6,623 | $171,705 | 6.2 | 9.0% |
| 08853 | Neshanic Station | Standard | 5,634 | $220,725 | 11.3 | 5.4% |
| 08880 | South Bound Brook | Standard | 4,867 | $112,961 | 0.8 | 6.2% |
| 08836 | Martinsville | Standard | 3,855 | $229,726 | 4.5 | -0.3% |
| 07931 | Far Hills | Standard | 2,985 | $201,078 | 22.1 | -10.8% |
| 07934 | Gladstone | Standard | 1,293 | $245,429 | 2.9 | -20.2% |
| 07977 | Peapack | PO Box | 917 | $150,875 | 1.9 | 68.3% |
| 08553 | Rocky Hill | Standard | 819 | $148,056 | 0.6 | 47.8% |
| 07939 | Lyons | Standard | 322 | — | 0.0 | -5.3% |
| 08528 | Kingston | Standard | 321 | — | 1.0 | 104.5% |
| 08821 | Flagtown | PO Box | 283 | $155,833 | 0.2 | 76.9% |
| 08890 | Zarephath | PO Box | 17 | — | 0.0 | — |
| 08875 | Somerset | PO Box | — | — | 0.0 | — |
| 08504 | Blawenburg | PO Box | — | — | 0.0 | — |
| 07938 | Liberty Corner | PO Box | — | — | 0.0 | — |
| 07978 | Pluckemin | PO Box | — | — | 0.0 | — |