Borough · New Jersey
Andover, New Jersey
Andover, borough, in Sussex County, New Jersey. Andover had 614 residents on July 1, 2025 by the Census Bureau's estimate, up 2.7% since 2020; the 2020 Census counted 595 and the ACS 2020-2024 5-year estimates put it at 728 (±217). GEOID 3401330.
Residents, July 2025 estimate
614
Census Bureau estimate (no margin published)
2020 Census count: 595 · ACS 2020-2024: 728 ±217
Median household income
$92,750
±$36,320 (90% margin)
New Jersey: $103,556
Median home value
$400,000
±$77,190 (90% margin)
New Jersey: $454,400
Median gross rent
$1,597
±$213 (90% margin)
New Jersey: $1,720
Where is Andover and what county is it in?
Andover is a borough in Sussex County, New Jersey. It covers 1.3 square miles of land, 441 residents per square mile in 2020.
Andover 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 Andover, and is it growing?
The Census Bureau estimates that 614 people lived in Andover on July 1, 2025, up 2.7% since 2020, in line with New Jersey (+2.8%). The 2020 Census counted 595 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 728 (±217).
| Measure | Andover | Sussex County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 728 ±217 | 145,807 | no clear change |
| Households | 271 ±67 | 57,767 | no clear change |
| Average household size | 2.69 ±0.46 | 2.50 | no clear change |
| Housing units | 295 ±73 | 62,865 | no clear change |
Andover's population since 2000
From 658 in 2000 to 614 in 2025: down 6.7%. The 2000, 2010 and 2020 figures are census counts, each for Andover 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 Andover?
The median resident of Andover is 44.3 years old; 22.0% are under 18 and 10.9% are 65 or older. The largest group is non-Hispanic white residents at 72.7%, then Hispanic or Latino residents (of any race) at 12.8%. 15.1% of residents were born outside the United States.
| Measure | Andover | Sussex County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 44.3 ±6.8 | 43.8 | no clear change |
| Under 18 years | 22.0% ±8.2 pts | 19.5% | – |
| 65 years and over | 10.9% ±5.5 pts | 19.0% | – |
| Male | 55.4% ±8.5 pts | 50.4% | – |
| Hispanic or Latino (any race) | 12.8% ±11.3 pts | 11.9% | – |
| White alone, not Hispanic | 72.7% ±14.0 pts | 79.7% | −17.3 pts |
| Black or African American alone, not Hispanic | 0.0% ±6.0 pts | 1.7% | – |
| Asian alone, not Hispanic | 2.1% ±2.7 pts | 2.0% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±6.0 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±6.0 pts | 0.0% | – |
| Two or more races, not Hispanic | 9.5% ±7.9 pts | 4.0% | – |
| Some other race alone, not Hispanic | 3.0% ±4.6 pts | 0.6% | – |
| Born outside the United States | 15.1% ±9.8 pts | 8.7% | +12.4 pts |
| Speak a language other than English at home (age 5+) | 19.2% ±14.1 pts | 12.2% | – |
| Civilian veterans (age 18+) | 2.6% ±1.8 pts | 4.8% | – |
| With a disability | 10.7% ±5.7 pts | 11.7% | – |
| No health insurance coverage | 6.2% ±5.3 pts | 3.8% | – |
| High school graduate or higher (age 25+) | 83.8% ±12.3 pts | 95.4% | – |
| Bachelor's degree or higher (age 25+) | 42.9% ±14.0 pts | 40.3% | no clear change |
| Graduate or professional degree (age 25+) | 10.4% ±6.9 pts | 14.5% | – |
| Lived in the same house a year earlier | 89.4% ±4.9 pts | 92.2% | – |
| Moved from another state in the past year | 0.8% ±1.0 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 Andover earn?
Half of Andover's 271 households earn less than $92,750 a year (±$36,320), against $116,186 in Sussex County and $103,556 in New Jersey. In 2015-2019 it was $79,568 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Andover | Sussex County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $92,750 ±$36,320 | $116,186 | no clear change |
| Mean household income | $111,809 ±$21,922 | $144,531 | – |
| Per capita income | $41,119 ±$7,958 | $57,252 | no clear change |
| People below the poverty line | 4.5% ±4.0 pts | 5.5% | – |
| Children under 18 below the poverty line | 2.5% ±4.2 pts | 7.3% | – |
| Households receiving SNAP | 8.5% ±7.5 pts | 3.1% | – |
| Households with a computer | 98.9% ±2.5 pts | 97.0% | – |
| Households with a broadband subscription | 96.7% ±3.4 pts | 94.5% | – |
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 Andover?
Owners occupy 56.1% of Andover's occupied homes and renters 43.9%. The median owner-occupied home is valued at $400,000 by its owner (±$77,190). The median renter pays $1,597 a month including utilities, and 47.9% of renters pay 35% or more of their income on rent.
| Measure | Andover | Sussex County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $400,000 ±$77,190 | $369,400 | no clear change |
| Median gross rent | $1,597 ±$213 | $1,585 | no clear change |
| Renters paying 35% or more of income on rent | 47.9% ±21.6 pts | 46.0% | – |
| Median monthly owner costs, with a mortgage | $2,469 ±$252 | $2,473 | – |
| Owner-occupied homes | 56.1% ±15.0 pts | 83.7% | no clear change |
| Renter-occupied homes | 43.9% ±15.0 pts | 16.3% | – |
| Housing units | 295 ±73 | 62,865 | no clear change |
| Homeowner vacancy rate | 5.6% ±8.0 pts | 0.9% | – |
| Rental vacancy rate | 0.0% ±30.5 pts | 4.4% | – |
| Single-family detached homes | 67.1% ±12.4 pts | 78.0% | – |
| Mobile homes | 0.0% ±14.1 pts | 1.7% | – |
| Built 2020 or later | 0.0% ±14.1 pts | 0.7% | – |
| Built 2010 to 2019 | 0.0% ±14.1 pts | 2.1% | – |
| Built 1939 or earlier | 43.4% ±12.1 pts | 14.1% | – |
| Households with no vehicle | 1.5% ±1.7 pts | 3.3% | – |
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 Andover building?
Builders took permits for 0 new housing units in Andover in 2025 (0 in single-family houses), 0.0 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 Andover work and get to work?
74.2% of Andover's workers drive alone and 13.6% work from home. The average trip to work takes 40.9 minutes.
| Measure | Andover | Sussex County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 83.8% ±7.2 pts | 68.3% | – |
| Unemployment rate | 4.4% ±4.2 pts | 5.1% | – |
| Drove alone to work | 74.2% ±8.6 pts | 76.3% | – |
| Carpooled | 12.0% ±9.5 pts | 6.2% | – |
| Public transportation | 0.0% ±9.7 pts | 0.9% | – |
| Walked | 0.2% ±0.7 pts | 0.8% | – |
| Worked from home | 13.6% ±8.5 pts | 14.9% | – |
| Mean travel time to work | 40.9 min ±9.6 | 36.3 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 Andover?
No census tract lies mostly in Andover; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 3735Sussex County | 3,658 | $143,500 |
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 Andover) · Census block assignment files
How does Andover compare with other places in New Jersey?
By the Census Bureau's July 2025 estimates, Andover is the 12,374th-most populous of the 19,476 U.S. incorporated places that have one and the 309th-most populous of 323 in New Jersey.
Andover is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 309th | 323 |
Andover's figures with every place in New Jersey (CSV)
Every place in New Jersey, sortable · Compare Andover 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 Andover?
25 of the 57 figures for Andover 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 Andover 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 Andover.