Township · New Jersey
Hillside Township, New Jersey
Hillside Township, township, in Union County, New Jersey. Hillside Township had 22,860 residents on July 1, 2025 by the Census Bureau's estimate, up 1.9% since 2020; the 2020 Census counted 22,456 and the ACS 2020-2024 5-year estimates put it at 22,349 (±32). GEOID 3403931980.
Residents, July 2025 estimate
22,860
Census Bureau estimate (no margin published)
2020 Census count: 22,456 · ACS 2020-2024: 22,349 ±32
Median household income
$99,528
±$8,370 (90% margin)
New Jersey: $103,556
Median home value
$397,400
±$15,669 (90% margin)
New Jersey: $454,400
Median gross rent
$1,794
±$108 (90% margin)
New Jersey: $1,720
Where is Hillside Township and what county is it in?
Hillside Township is a township in Union County, New Jersey. It covers 2.8 square miles of land, 8,116 residents per square mile in 2020.
Part of Kean University (CDP) also lies in it.
Hillside Township 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 Hillside Township, and is it growing?
The Census Bureau estimates that 22,860 people lived in Hillside Township on July 1, 2025, up 1.9% since 2020, slower than New Jersey (+2.8%). The 2020 Census counted 22,456 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 22,349 (±32).
| Measure | Hillside Township | Union County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 22,349±32 | 579,290 | +421 |
| Households | 7,032±392 | 203,277 | no clear change |
| Average household size | 3.17±0.18 | 2.82 | no clear change |
| Housing units | 7,457±434 | 212,385 | no clear change |
Hillside Township's population since 2000
From 21,747 in 2000 to 22,860 in 2025: up 5.1%. The 2000, 2010 and 2020 figures are census counts, each for Hillside Township 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 Hillside Township?
The median resident of Hillside Township is 35.7 years old; 23.3% are under 18 and 12.3% are 65 or older. The largest group is non-Hispanic Black residents at 48.4%, then Hispanic or Latino residents (of any race) at 27.5%. 42.8% of residents were born outside the United States.
| Measure | Hillside Township | Union County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 35.7±2.1 | 39.1 | no clear change |
| Under 18 years | 23.3%±3.1 pts | 23.5% | – |
| 65 years and over | 12.3%±1.9 pts | 15.1% | – |
| Male | 49.1%±2.4 pts | 49.4% | – |
| Hispanic or Latino (any race) | 27.5%±4.1 pts | 35.2% | +9.1 pts |
| White alone, not Hispanic | 15.9%±3.0 pts | 35.4% | no clear change |
| Black or African American alone, not Hispanic | 48.4%±4.3 pts | 19.1% | no clear change |
| Asian alone, not Hispanic | 1.5%±0.9 pts | 5.6% | −1.7 pts |
| 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%±0.2 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.4%±1.3 pts | 3.4% | – |
| Some other race alone, not Hispanic | 3.1%±1.7 pts | 1.2% | – |
| Born outside the United States | 42.8%±4.1 pts | 33.6% | +13.6 pts |
| Speak a language other than English at home (age 5+) | 54.0%±4.3 pts | 47.6% | – |
| Civilian veterans (age 18+) | 1.5%±0.6 pts | 2.5% | – |
| With a disability | 6.8%±1.4 pts | 9.1% | – |
| No health insurance coverage | 18.9%±4.2 pts | 13.0% | +6.2 pts |
| High school graduate or higher (age 25+) | 87.4%±2.7 pts | 86.3% | – |
| Bachelor's degree or higher (age 25+) | 27.8%±3.4 pts | 38.9% | no clear change |
| Graduate or professional degree (age 25+) | 9.4%±1.8 pts | 15.8% | – |
| Lived in the same house a year earlier | 90.2%±2.3 pts | 90.5% | – |
| Moved from another state in the past year | 2.1%±1.3 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 Hillside Township earn?
Half of Hillside Township's 7,032 households earn less than $99,528 a year (±$8,370), against $103,202 in Union County and $103,556 in New Jersey. In 2015-2019 it was $92,596 in 2024 dollars; the margins of error cannot tell the two periods apart. 10.7% of residents live below the poverty line.
| Measure | Hillside Township | Union County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $99,528±$8,370 | $103,202 | no clear change |
| Mean household income | $115,506±$7,339 | $149,595 | – |
| Per capita income | $37,421±$2,475 | $52,874 | no clear change |
| People below the poverty line | 10.7%±3.1 pts | 9.2% | no clear change |
| Children under 18 below the poverty line | 16.6%±6.4 pts | 11.8% | no clear change |
| Households receiving SNAP | 8.5%±2.4 pts | 8.8% | – |
| Households with a computer | 95.3%±2.6 pts | 95.8% | – |
| Households with a broadband subscription | 95.0%±2.4 pts | 93.3% | – |
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 Hillside Township?
Owners occupy 67.3% of Hillside Township's occupied homes and renters 32.7%. The median owner-occupied home is valued at $397,400 by its owner (±$15,669). The median renter pays $1,794 a month including utilities, and 40.5% of renters pay 35% or more of their income on rent.
| Measure | Hillside Township | Union County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $397,400±$15,669 | $529,200 | +$78,281 |
| Median gross rent | $1,794±$108 | $1,730 | no clear change |
| Renters paying 35% or more of income on rent | 40.5%±7.7 pts | 42.8% | −11.4 pts |
| Median monthly owner costs, with a mortgage | $2,780±$122 | $3,203 | – |
| Owner-occupied homes | 67.3%±3.9 pts | 57.4% | no clear change |
| Renter-occupied homes | 32.7%±3.9 pts | 42.6% | – |
| Housing units | 7,457±434 | 212,385 | no clear change |
| Homeowner vacancy rate | 3.9%±2.9 pts | 1.0% | – |
| Rental vacancy rate | 4.5%±4.1 pts | 3.1% | – |
| Single-family detached homes | 57.1%±3.7 pts | 49.7% | – |
| Mobile homes | 0.0%±0.6 pts | 0.2% | – |
| Built 2020 or later | 0.1%±0.2 pts | 1.0% | – |
| Built 2010 to 2019 | 1.5%±0.8 pts | 5.8% | – |
| Built 1939 or earlier | 29.7%±3.8 pts | 23.5% | – |
| Households with no vehicle | 10.5%±2.6 pts | 10.2% | – |
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 Hillside Township building?
Builders took permits for 9 new housing units in Hillside Township in 2025 (7 in single-family houses), 0.4 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 Hillside Township work and get to work?
66.1% of Hillside Township's workers drive alone and 8.6% work from home. The average trip to work takes 29.7 minutes. The unemployment rate in 2020-2024 averaged 7.6%.
| Measure | Hillside Township | Union County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 72.9%±3.1 pts | 69.3% | – |
| Unemployment rate | 7.6%±1.7 pts | 6.5% | no clear change |
| Drove alone to work | 66.1%±4.0 pts | 60.9% | – |
| Carpooled | 4.5%±1.6 pts | 8.9% | – |
| Public transportation | 12.8%±3.2 pts | 9.1% | – |
| Walked | 3.1%±1.3 pts | 2.4% | – |
| Worked from home | 8.6%±2.6 pts | 14.2% | +6.5 pts |
| Mean travel time to work | 29.7 min±2.1 | 30.2 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 Hillside Township?
5 census tracts lie mostly in Hillside Township (2020 census blocks). Their median household incomes run from $80,446 (Tract 323) to $111,250 (Tract 324.01).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 322Union County | 5,961 | $102,854 |
| Tract 325Union County | 5,750 | $101,722 |
| Tract 324.01Union County | 4,268 | $111,250 |
| Tract 324.02Union County | 3,633 | $99,682 |
| Tract 323Union County | 2,737 | $80,446 |
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 Hillside Township) · Census block assignment files
How does Hillside Township compare with other places in New Jersey?
By the Census Bureau's July 2025 estimates, Hillside Township is the 506th-most populous of the 16,079 U.S. towns and townships that have one and the 81st-most populous of 241 in New Jersey.
Hillside Township ranks 501st 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 | 81st | 241 |
| Growth 2020-2025 (PEP) | 284th | 532 |
| Residents per square mile | 58th | 787 |
| Median household income | 501st | 771 |
| Per capita income | 694th | 785 |
| Median home value | 466th | 777 |
| Median gross rent | 344th | 701 |
| Poverty rate | 115th | 539 |
| Bachelor's degree or higher | 630th | 780 |
| Median age | 727th | 786 |
| Owner-occupied share | 566th | 777 |
| Work from home | 611th | 695 |
| Travel time to work | 433rd | 787 |
Hillside Township's figures with every place in New Jersey (CSV)
Every place in New Jersey, sortable · Compare Hillside Township 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 Hillside Township?
6 of the 57 figures for Hillside Township 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 Hillside Township 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.