Township · New Jersey
Mansfield Township, Warren County, New Jersey
Mansfield Township, Warren County, township, in Warren County, New Jersey. Mansfield Township, Warren County had 7,996 residents on July 1, 2025 by the Census Bureau's estimate, up 2.8% since 2020; the 2020 Census counted 7,781 and the ACS 2020-2024 5-year estimates put it at 7,778 (±21). GEOID 3404143320.
Residents, July 2025 estimate
7,996
Census Bureau estimate (no margin published)
2020 Census count: 7,781 · ACS 2020-2024: 7,778 ±21
Median household income
$88,845
±$14,713 (90% margin)
New Jersey: $103,556
Median home value
$367,300
±$30,705 (90% margin)
New Jersey: $454,400
Median gross rent
$1,438
±$51 (90% margin)
New Jersey: $1,720
Where is Mansfield Township, Warren County and what county is it in?
Mansfield Township, Warren County is a township in Warren County, New Jersey. It covers 29.6 square miles of land, 263 residents per square mile in 2020.
3 places lie inside Mansfield Township (Warren County): Beattystown (CDP, 4,701 in 2020), Anderson (CDP, 306 in 2020) and Port Murray (CDP, 227 in 2020). Part of Port Colden (CDP) also lies in it.
Mansfield Township, Warren County is in the Allentown-Bethlehem-Easton, PA-NJ metropolitan statistical area, which takes in 4 counties (Census Bureau delineation, July 2023).
Mansfield Township, Warren County is the same area as Census Tract 315 of Warren County: the tract's figures are Mansfield Township, Warren County's own.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Mansfield Township, Warren County, and is it growing?
The Census Bureau estimates that 7,996 people lived in Mansfield Township, Warren County on July 1, 2025, up 2.8% since 2020, in line with New Jersey (+2.8%). The 2020 Census counted 7,781 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 7,778 (±21).
| Measure | Mansfield Township, Warren County | Warren County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 7,778±21 | 110,849 | +381 |
| Households | 2,947±208 | 45,391 | no clear change |
| Average household size | 2.60±0.18 | 2.40 | no clear change |
| Housing units | 3,016±223 | 46,789 | no clear change |
Mansfield Township, Warren County's population since 2000
From 6,653 in 2000 to 7,996 in 2025: up 20.2%. The 2000, 2010 and 2020 figures are census counts, each for Mansfield Township, Warren County 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 Mansfield Township, Warren County?
The median resident of Mansfield Township, Warren County is 38.8 years old; 21.9% are under 18 and 15.6% are 65 or older. The largest group is non-Hispanic white residents at 68.8%, then Hispanic or Latino residents (of any race) at 20.5%. 18.5% of residents were born outside the United States.
| Measure | Mansfield Township, Warren County | Warren County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 38.8±4.6 | 44.0 | no clear change |
| Under 18 years | 21.9%±5.3 pts | 19.3% | – |
| 65 years and over | 15.6%±3.0 pts | 19.6% | – |
| Male | 50.4%±3.9 pts | 49.9% | – |
| Hispanic or Latino (any race) | 20.5%±6.0 pts | 13.0% | +11.0 pts |
| White alone, not Hispanic | 68.8%±7.3 pts | 74.6% | no clear change |
| Black or African American alone, not Hispanic | 3.5%±2.4 pts | 5.6% | – |
| Asian alone, not Hispanic | 2.4%±2.2 pts | 3.0% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.1%±0.2 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.6 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.8%±3.3 pts | 3.5% | – |
| Some other race alone, not Hispanic | 0.0%±0.6 pts | 0.2% | – |
| Born outside the United States | 18.5%±4.7 pts | 10.6% | no clear change |
| Speak a language other than English at home (age 5+) | 28.2%±5.0 pts | 15.4% | – |
| Civilian veterans (age 18+) | 3.2%±1.4 pts | 5.4% | – |
| With a disability | 15.1%±3.6 pts | 11.5% | – |
| No health insurance coverage | 4.9%±2.6 pts | 4.8% | no clear change |
| High school graduate or higher (age 25+) | 91.6%±3.4 pts | 94.1% | – |
| Bachelor's degree or higher (age 25+) | 43.2%±6.3 pts | 36.5% | +9.9 pts |
| Graduate or professional degree (age 25+) | 13.3%±4.4 pts | 12.0% | – |
| Lived in the same house a year earlier | 91.4%±4.2 pts | 91.9% | – |
| Moved from another state in the past year | 1.0%±0.9 pts | 1.3% | – |
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 Mansfield Township, Warren County earn?
Half of Mansfield Township, Warren County's 2,947 households earn less than $88,845 a year (±$14,713), against $100,869 in Warren County and $103,556 in New Jersey. In 2015-2019 it was $99,498 in 2024 dollars; the margins of error cannot tell the two periods apart. 6.8% of residents live below the poverty line.
| Measure | Mansfield Township, Warren County | Warren County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $88,845±$14,713 | $100,869 | no clear change |
| Mean household income | $111,145±$12,589 | $118,920 | – |
| Per capita income | $41,989±$5,356 | $48,600 | no clear change |
| People below the poverty line | 6.8%±3.6 pts | 8.3% | no clear change |
| Children under 18 below the poverty line | 1.2%±2.1 pts | 10.4% | – |
| Households receiving SNAP | 4.0%±2.8 pts | 7.4% | – |
| Households with a computer | 97.8%±2.3 pts | 96.0% | – |
| Households with a broadband subscription | 97.7%±2.3 pts | 92.5% | – |
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 Mansfield Township, Warren County?
Owners occupy 62.1% of Mansfield Township, Warren County's occupied homes and renters 37.9%. The median owner-occupied home is valued at $367,300 by its owner (±$30,705). The median renter pays $1,438 a month including utilities, and 36.1% of renters pay 35% or more of their income on rent.
| Measure | Mansfield Township, Warren County | Warren County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $367,300±$30,705 | $346,500 | no clear change |
| Median gross rent | $1,438±$51 | $1,409 | no clear change |
| Renters paying 35% or more of income on rent | 36.1%±12.7 pts | 40.3% | no clear change |
| Median monthly owner costs, with a mortgage | $2,514±$517 | $2,317 | – |
| Owner-occupied homes | 62.1%±6.3 pts | 75.1% | no clear change |
| Renter-occupied homes | 37.9%±6.3 pts | 24.9% | – |
| Housing units | 3,016±223 | 46,789 | no clear change |
| Homeowner vacancy rate | 0.0%±2.4 pts | 0.6% | – |
| Rental vacancy rate | 0.0%±3.8 pts | 0.8% | – |
| Single-family detached homes | 62.2%±7.3 pts | 68.1% | – |
| Mobile homes | 0.0%±1.5 pts | 0.9% | – |
| Built 2020 or later | 0.8%±1.0 pts | 0.6% | – |
| Built 2010 to 2019 | 3.3%±2.7 pts | 3.2% | – |
| Built 1939 or earlier | 7.4%±4.1 pts | 23.6% | – |
| Households with no vehicle | 1.2%±1.3 pts | 5.6% | – |
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 Mansfield Township, Warren County building?
Builders took permits for 35 new housing units in Mansfield Township, Warren County in 2025 (35 in single-family houses), 4.4 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 Mansfield Township, Warren County work and get to work?
79.2% of Mansfield Township, Warren County's workers drive alone and 13.7% work from home. The average trip to work takes 30.6 minutes. The unemployment rate in 2020-2024 averaged 4.1%.
| Measure | Mansfield Township, Warren County | Warren County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 71.9%±4.3 pts | 67.1% | – |
| Unemployment rate | 4.1%±2.4 pts | 5.1% | no clear change |
| Drove alone to work | 79.2%±5.9 pts | 76.5% | – |
| Carpooled | 5.0%±3.0 pts | 5.9% | – |
| Public transportation | 1.5%±1.3 pts | 1.8% | – |
| Walked | 0.0%±1.1 pts | 1.8% | – |
| Worked from home | 13.7%±5.7 pts | 12.5% | – |
| Mean travel time to work | 30.6 min±3.4 | 34.0 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 Mansfield Township, Warren County?
1 census tract lies mostly in Mansfield Township, Warren County (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 315Warren County | 7,778 | $88,845 |
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 Mansfield Township, Warren County) · Census block assignment files
How does Mansfield Township, Warren County compare with other places in New Jersey?
By the Census Bureau's July 2025 estimates, Mansfield Township, Warren County is the 1,556th-most populous of the 16,079 U.S. towns and townships that have one and the 155th-most populous of 241 in New Jersey.
Mansfield Township, Warren County ranks 594th 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 | 155th | 241 |
| Growth 2020-2025 (PEP) | 188th | 532 |
| Residents per square mile | 712th | 787 |
| Median household income | 594th | 771 |
| Per capita income | 646th | 785 |
| Median home value | 515th | 777 |
| Median gross rent | 567th | 701 |
| Poverty rate | 273rd | 539 |
| Bachelor's degree or higher | 406th | 780 |
| Median age | 626th | 786 |
| Owner-occupied share | 610th | 777 |
| Work from home | 457th | 695 |
| Travel time to work | 374th | 787 |
Mansfield Township, Warren County's figures with every place in New Jersey (CSV)
Every place in New Jersey, sortable · Compare Mansfield Township, Warren County 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 Mansfield Township, Warren County?
17 of the 57 figures for Mansfield Township, Warren County 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 Mansfield Township, Warren County 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' school search.