Somerset County, New Jersey Demographics 2026
Somerset County, New Jersey has a population of 349,846, the 13th most populous county in New Jersey. The median household income is $140,374 and the median home value is $552,100. The poverty rate is 5.4%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Somerset County Quick Facts
How Somerset County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 346,203 | 349,846 | +1.1% |
| Median household income | $135,960 | $140,374 | +3.2% |
| Median home value | $523,900 | $552,100 | +5.4% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 66 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in Somerset County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| North Plainfield | 22,809 | $87,349 | 13.2% | $374,700 |
| Somerset | 22,720 | $121,028 | 4.5% | $438,800 |
| Hillsborough | 22,585 | $144,112 | 2.7% | $435,700 |
| Bradley Gardens | 14,165 | $177,849 | 4.2% | $546,300 |
| Somerville | 13,410 | $103,760 | 5.9% | $435,700 |
| Franklin Park | 13,211 | $114,946 | 11.0% | $336,600 |
| Bound Brook | 12,219 | $90,571 | 11.1% | $397,100 |
| Martinsville | 11,559 | $205,000 | 1.4% | $720,400 |
| East Franklin | 11,070 | $115,458 | 5.9% | $385,900 |
| Manville | 10,921 | $93,333 | 11.7% | $354,300 |
| The Hills | 10,785 | $154,564 | 3.8% | $577,000 |
| Blackwells Mills | 10,301 | $250,000+ | 1.7% | $735,000 |
| Raritan | 8,368 | $107,672 | 8.0% | $456,900 |
| Basking Ridge | 7,917 | $188,295 | 3.4% | $851,200 |
| Bernardsville | 7,916 | $236,115 | 1.1% | $793,800 |
| Green Knoll | 6,789 | $165,227 | 3.3% | $597,100 |
| Franklin Center | 6,646 | $157,212 | 7.3% | $612,000 |
| Bridgewater Center | 6,505 | $205,595 | 3.1% | $703,700 |
| Finderne | 6,489 | $118,064 | 7.6% | $413,400 |
| Watchung | 6,485 | $173,672 | 1.2% | $882,500 |
| Belle Mead | 6,394 | $223,250 | 3.3% | $810,300 |
| Neshanic Station | 5,640 | $221,395 | 0.2% | $770,300 |
| Lyons | 5,187 | $250,000+ | 1.9% | $1,037,400 |
| South Bound Brook | 4,867 | $112,961 | 13.1% | $359,000 |
| Six Mile Run | 2,882 | $140,379 | 0.9% | $480,700 |
| Peapack and Gladstone | 2,571 | $202,578 | 1.1% | $868,800 |
| Ten Mile Run | 2,492 | $162,868 | 0.0% | $710,200 |
| Liberty Corner | 2,325 | $241,480 | 2.0% | $1,187,500 |
| Weston | 2,105 | $83,197 | 1.4% | $548,800 |
| Middlebush | 2,049 | $156,938 | 2.6% | $502,100 |
| Voorhees | 2,000 | $89,200 | 17.1% | $388,200 |
| Bedminster | 1,670 | $128,594 | 2.8% | $742,200 |
| Far Hills | 948 | $143,250 | 5.4% | $792,100 |
| Flagtown | 930 | $229,612 | 6.5% | $689,000 |
| Rocky Hill | 819 | $148,056 | 3.9% | $597,200 |
| Griggstown | 812 | $168,393 | 0.0% | $595,500 |
| East Millstone | 698 | N/A | 0.0% | $608,900 |
| Millstone | 655 | $141,709 | 3.5% | $494,500 |
| Neshanic | 626 | $166,250 | 0.0% | $540,300 |
| Harlingen | 593 | $231,923 | 0.0% | $800,900 |
| Pluckemin | 489 | $54,175 | 46.5% | $567,300 |
| Pleasant Plains | 468 | N/A | 0.0% | $598,200 |
| Lamington | 362 | $154,511 | 6.3% | $989,100 |
| Skillman | 345 | N/A | 0.0% | $634,300 |
| Pottersville | 245 | $171,801 | 1.8% | $680,100 |
| East Rocky Hill | 235 | $211,731 | 0.9% | $844,800 |
| Clyde | 129 | $108,750 | 0.0% | $444,400 |
| Blawenburg | 85 | $250,000+ | 0.0% | N/A |
| Zarephath | 17 | N/A | N/A | N/A |
Explore New Jersey Rankings
Population Overview
Somerset County is located in New Jersey with a total population of 349,846. It is the 13th most populous county out of 21 in New Jersey. The county encompasses 49 Census-designated places.
Age Demographics
The median age in Somerset County is 41.8 years. This is 4% higher than the state median of 40.1 years.
Economy, Income & Housing
The median household income in Somerset County is $140,374. This is 36% higher than the state median of $103,556. It is also 74% higher than the national median of $80,734. The poverty rate stands at 5.4%. This is 45% lower than the state poverty rate of 9.7%. The unemployment rate is 4.7%. This is 25% lower than the state rate of 6.3%. The median home value is $552,100. Housing costs are 22% higher than the state median of $454,400. The home-value-to-income ratio is 3.9x. 74.3% of occupied housing units are owner-occupied. This homeownership rate is 16% higher than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Somerset County is White (non-Hispanic), making up 49.3% of the population. Asian residents account for 19.6%. The Asian population is significantly higher than the state average (19.6% vs 10.1%).
Education
57.8% of residents aged 25 and older hold a bachelor's degree or higher. This places Somerset County in the top 10% of all counties in the state for educational attainment. This is 32% higher than the state rate of 43.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.0%. Notably, 26.6% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All figures for Somerset County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against New Jersey and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Somerset County, New Jersey?
Somerset County has a population of 349,846, making it the 13th most populous county in New Jersey.
What is the median income in Somerset County?
The median household income in Somerset County is $140,374 with a poverty rate of 5.4%.
How many cities are in Somerset County, New Jersey?
Somerset County contains 49 Census-designated places.