Borough · New Jersey
Somerville, New Jersey
Somerville, borough, in Somerset County, New Jersey. Somerville had 14,665 residents on July 1, 2025 by the Census Bureau's estimate, up 18.8% since 2020; the 2020 Census counted 12,346 and the ACS 2020-2024 5-year estimates put it at 13,410 (±30). GEOID 3468460.
Residents, July 2025 estimate
14,665
Census Bureau estimate (no margin published)
2020 Census count: 12,346 · ACS 2020-2024: 13,410 ±30
Median household income
$103,760
±$9,316 (90% margin)
New Jersey: $103,556
Median home value
$435,700
±$20,614 (90% margin)
New Jersey: $454,400
Median gross rent
$1,802
±$49 (90% margin)
New Jersey: $1,720
Where is Somerville and what county is it in?
Somerville is a borough in Somerset County, New Jersey. It covers 2.3 square miles of land, 5,281 residents per square mile in 2020.
Somerville is in the New York-Newark-Jersey City, NY-NJ metropolitan statistical area, which takes in 22 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Somerville, and is it growing?
The Census Bureau estimates that 14,665 people lived in Somerville on July 1, 2025, up 18.8% since 2020, faster than New Jersey (+2.8%). The 2020 Census counted 12,346 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 13,410 (±30).
| Measure | Somerville | Somerset County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 13,410 ±30 | 349,846 | +1,325 |
| Households | 5,980 ±306 | 130,802 | +1,493 |
| Average household size | 2.20 ±0.11 | 2.64 | −0.40 |
| Housing units | 6,131 ±303 | 133,639 | +881 |
Somerville's population since 2000
From 12,423 in 2000 to 14,665 in 2025: up 18.0%. The 2000, 2010 and 2020 figures are census counts, each for Somerville as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Somerville?
The median resident of Somerville is 35.9 years old; 16.1% are under 18 and 14.5% are 65 or older. The largest group is non-Hispanic white residents at 51.8%, then Hispanic or Latino residents (of any race) at 21.1%. 23.9% of residents were born outside the United States.
| Measure | Somerville | Somerset County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 35.9 ±1.3 | 41.8 | no clear change |
| Under 18 years | 16.1% ±2.5 pts | 21.2% | – |
| 65 years and over | 14.5% ±2.4 pts | 17.0% | – |
| Male | 50.7% ±2.5 pts | 49.3% | – |
| Hispanic or Latino (any race) | 21.1% ±3.0 pts | 17.6% | no clear change |
| White alone, not Hispanic | 51.8% ±5.2 pts | 49.3% | no clear change |
| Black or African American alone, not Hispanic | 11.3% ±5.3 pts | 9.3% | no clear change |
| Asian alone, not Hispanic | 10.8% ±2.7 pts | 19.6% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.3 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.3% ±1.7 pts | 3.6% | – |
| Some other race alone, not Hispanic | 0.6% ±0.5 pts | 0.7% | – |
| Born outside the United States | 23.9% ±3.4 pts | 27.9% | no clear change |
| Speak a language other than English at home (age 5+) | 33.6% ±5.1 pts | 34.7% | – |
| Civilian veterans (age 18+) | 4.9% ±2.0 pts | 3.2% | – |
| With a disability | 10.6% ±2.2 pts | 8.6% | – |
| No health insurance coverage | 7.5% ±2.2 pts | 5.4% | no clear change |
| High school graduate or higher (age 25+) | 94.2% ±2.3 pts | 94.0% | – |
| Bachelor's degree or higher (age 25+) | 54.7% ±3.9 pts | 57.8% | +11.5 pts |
| Graduate or professional degree (age 25+) | 21.3% ±3.6 pts | 26.6% | – |
| Lived in the same house a year earlier | 82.9% ±4.4 pts | 90.9% | – |
| Moved from another state in the past year | 4.0% ±2.1 pts | 1.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Somerville earn?
Half of Somerville's 5,980 households earn less than $103,760 a year (±$9,316), against $140,374 in Somerset County and $103,556 in New Jersey. In 2015-2019 it was $94,891 in 2024 dollars; the margins of error cannot tell the two periods apart. 5.9% of residents live below the poverty line.
| Measure | Somerville | Somerset County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $103,760 ±$9,316 | $140,374 | no clear change |
| Mean household income | $125,387 ±$7,922 | $191,543 | – |
| Per capita income | $56,587 ±$3,865 | $72,193 | +$10,867 |
| People below the poverty line | 5.9% ±1.6 pts | 5.4% | no clear change |
| Children under 18 below the poverty line | 2.1% ±2.0 pts | 6.7% | – |
| Households receiving SNAP | 8.4% ±3.2 pts | 3.7% | – |
| Households with a computer | 97.9% ±1.6 pts | 97.7% | – |
| Households with a broadband subscription | 92.6% ±2.6 pts | 95.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Somerville?
Owners occupy 43.0% of Somerville's occupied homes and renters 57.0%. The median owner-occupied home is valued at $435,700 by its owner (±$20,614). The median renter pays $1,802 a month including utilities, and 30.8% of renters pay 35% or more of their income on rent.
| Measure | Somerville | Somerset County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $435,700 ±$20,614 | $552,100 | +$39,417 |
| Median gross rent | $1,802 ±$49 | $2,033 | +$94 |
| Renters paying 35% or more of income on rent | 30.8% ±7.3 pts | 40.5% | no clear change |
| Median monthly owner costs, with a mortgage | $3,003 ±$170 | $3,156 | – |
| Owner-occupied homes | 43.0% ±4.4 pts | 74.3% | no clear change |
| Renter-occupied homes | 57.0% ±4.4 pts | 25.7% | – |
| Housing units | 6,131 ±303 | 133,639 | +881 |
| Homeowner vacancy rate | 0.0% ±1.7 pts | 0.3% | – |
| Rental vacancy rate | 1.3% ±1.9 pts | 2.0% | – |
| Single-family detached homes | 39.3% ±4.1 pts | 57.8% | – |
| Mobile homes | 0.0% ±0.7 pts | 0.2% | – |
| Built 2020 or later | 8.6% ±2.8 pts | 1.3% | – |
| Built 2010 to 2019 | 7.2% ±2.3 pts | 6.1% | – |
| Built 1939 or earlier | 24.2% ±3.8 pts | 9.3% | – |
| Households with no vehicle | 7.7% ±2.5 pts | 4.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Somerville building?
Builders took permits for 5 new housing units in Somerville in 2025 (5 in single-family houses), 0.3 per 1,000 residents against 2.9 across New Jersey.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Somerville work and get to work?
66.8% of Somerville's workers drive alone and 17.1% work from home. The average trip to work takes 28.2 minutes. The unemployment rate in 2020-2024 averaged 3.4%.
| Measure | Somerville | Somerset County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 73.5% ±3.0 pts | 70.0% | – |
| Unemployment rate | 3.4% ±1.2 pts | 4.7% | no clear change |
| Drove alone to work | 66.8% ±4.3 pts | 63.8% | – |
| Carpooled | 6.2% ±2.4 pts | 6.5% | – |
| Public transportation | 2.2% ±1.2 pts | 3.4% | – |
| Walked | 4.6% ±2.6 pts | 1.2% | – |
| Worked from home | 17.1% ±3.3 pts | 22.7% | +14.8 pts |
| Mean travel time to work | 28.2 min ±2.9 | 31.4 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Somerville?
4 census tracts lie mostly in Somerville (2020 census blocks). Their median household incomes run from $87,525 (Tract 501) to $147,500 (Tract 503).
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Somerville) · Census block assignment files
How does Somerville compare with other places in New Jersey?
By the Census Bureau's July 2025 estimates, Somerville is the 2,437th-most populous of the 19,476 U.S. incorporated places that have one and the 73rd-most populous of 323 in New Jersey.
Somerville ranks 462nd of 771 places in New Jersey with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 73rd | 323 |
| Growth 2020-2025 (PEP) | 5th | 532 |
| Residents per square mile | 131st | 787 |
| Median household income | 462nd | 771 |
| Per capita income | 363rd | 785 |
| Median home value | 392nd | 777 |
| Median gross rent | 338th | 701 |
| Poverty rate | 311th | 539 |
| Bachelor's degree or higher | 258th | 780 |
| Median age | 724th | 786 |
| Owner-occupied share | 721st | 777 |
| Work from home | 350th | 695 |
| Travel time to work | 505th | 787 |
Somerville's figures with every place in New Jersey (CSV)
Every place in New Jersey, sortable · Compare Somerville with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Somerville?
7 of the 57 figures for Somerville on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Somerville are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Somerville.