Census tract · Union County
Census Tract 323, Union County, New Jersey
Census Tract 323, GEOID 34039032300, in Union County, New Jersey, entirely within Hillside Township. 2,737 residents in the ACS 2020-2024 5-year estimates (±424); the 2020 Census counted 2,477.
Residents, 2020-2024
2,737
±424 (90% margin)
2020 Census count: 2,477
Median household income
$80,446
±$10,687 (90% margin)
Union County: $103,202
Median home value
$374,100
±$59,750 (90% margin)
Union County: $529,200
Median gross rent
$1,678
±$126 (90% margin)
Union County: $1,730
Where is Census Tract 323?
Census Tract 323 is one of 120 census tracts in Union County, New Jersey. It covers 0.80 square miles of land, 3,081 residents per square mile in 2020. Its GEOID, 34039032300, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Hillside Township | 100% |
9 census tracts border Census Tract 323: Tract 45 in Essex County ($53,105), Tract 48.02 in Essex County ($15,943), Tract 120 in Essex County ($61,530), Tract 127 in Essex County ($64,292), Tract 322 ($102,854), Tract 324.01 ($111,250), Tract 324.02 ($99,682), Tract 325 ($101,722) and Tract 326 ($107,917). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 323?
The 2020-2024 American Community Survey puts Census Tract 323's population at 2,737 (±424) in 965 households; the 2020 Census counted 2,477 residents and 915 housing units.
| Measure | Tract 323 | Hillside Township |
|---|---|---|
| Total population | 2,737±424 | 22,349 |
| Households | 965±156 | 7,032 |
| Average household size | 2.84±0.24 | 3.17 |
| Housing units | 987±159 | 7,457 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 323?
The median resident of Census Tract 323 is 38.8 years old; 19.7% are under 18 and 13.8% are 65 or older. The largest group is non-Hispanic Black residents at 61.3%, then Hispanic or Latino residents (of any race) at 20.9%. 44.7% of residents were born outside the United States.
| Measure | Tract 323 | Hillside Township |
|---|---|---|
| Median age | 38.8±4.3 | 35.7 |
| Under 18 years | 19.7%±5.1 pts | 23.3% |
| 65 years and over | 13.8%±7.2 pts | 12.3% |
| Hispanic or Latino (any race) | 20.9%±7.2 pts | 27.5% |
| White alone, not Hispanic | 6.8%±3.5 pts | 15.9% |
| Black or African American alone, not Hispanic | 61.3%±7.9 pts | 48.4% |
| Asian alone, not Hispanic | 0.4%±0.5 pts | 1.5% |
| American Indian and Alaska Native alone, not Hispanic | 0.8%±1.5 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.6 pts | 0.0% |
| Two or more races, not Hispanic | 7.9%±6.6 pts | 3.4% |
| Some other race alone, not Hispanic | 1.8%±2.2 pts | 3.1% |
| Born outside the United States | 44.7%±7.5 pts | 42.8% |
| Speak a language other than English at home (age 5+) | 47.5%±9.0 pts | 54.0% |
| Civilian veterans (age 18+) | 1.4%±1.1 pts | 1.5% |
| With a disability | 5.3%±2.5 pts | 6.8% |
| No health insurance coverage | 23.7%±7.1 pts | 18.9% |
| High school graduate or higher (age 25+) | 91.3%±4.3 pts | 87.4% |
| Bachelor's degree or higher (age 25+) | 23.1%±6.9 pts | 27.8% |
| Graduate or professional degree (age 25+) | 5.6%±3.2 pts | 9.4% |
| Lived in the same house a year earlier | 91.0%±4.9 pts | 90.2% |
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 Census Tract 323 earn?
Half of the 965 households in Census Tract 323 earn less than $80,446 a year (±$10,687), against $103,202 across Union County: 85th highest of the county's 118 tracts with a reliable estimate. 18.7% of residents live below the poverty line.
| Measure | Tract 323 | Hillside Township |
|---|---|---|
| Median household income | $80,446±$10,687 | $99,528 |
| Mean household income | $96,857±$15,582 | $115,506 |
| Per capita income | $33,420±$5,149 | $37,421 |
| People below the poverty line | 18.7%±10.5 pts | 10.7% |
| Children under 18 below the poverty line | 25.7%±15.7 pts | 16.6% |
| Households receiving SNAP | 11.3%±6.2 pts | 8.5% |
| Households with a computer | 97.5%±2.3 pts | 95.3% |
| Households with a broadband subscription | 95.8%±3.0 pts | 95.0% |
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 Census Tract 323?
Owners occupy 46.3% of Census Tract 323's occupied homes and renters 53.7%. The median owner-occupied home is valued at $374,100 by its owner (±$59,750). The median renter pays $1,678 a month including utilities, and 27.1% of renters pay 35% or more of their income on rent.
| Measure | Tract 323 | Hillside Township |
|---|---|---|
| Median home value (owner-occupied) | $374,100±$59,750 | $397,400 |
| Median gross rent | $1,678±$126 | $1,794 |
| Renters paying 35% or more of income on rent | 27.1%±10.6 pts | 40.5% |
| Median monthly owner costs, with a mortgage | $2,713±$267 | $2,780 |
| Owner-occupied homes | 46.3%±10.4 pts | 67.3% |
| Renter-occupied homes | 53.7%±10.4 pts | 32.7% |
| Housing units | 987±159 | 7,457 |
| Single-family detached homes | 31.5%±7.5 pts | 57.1% |
| Mobile homes | 0.0%±4.5 pts | 0.0% |
| Built 2020 or later | 0.0%±4.5 pts | 0.1% |
| Built 2010 to 2019 | 8.8%±5.5 pts | 1.5% |
| Built 1939 or earlier | 28.6%±8.7 pts | 29.7% |
| Households with no vehicle | 11.0%±6.0 pts | 10.5% |
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 do people in Census Tract 323 get to work?
75.5% of Census Tract 323's workers drive alone and 5.5% work from home. The average trip to work takes 25.6 minutes. The unemployment rate in 2020-2024 averaged 8.1%.
| Measure | Tract 323 | Hillside Township |
|---|---|---|
| In the labor force (age 16+) | 75.1%±8.6 pts | 72.9% |
| Unemployment rate | 8.1%±4.4 pts | 7.6% |
| Drove alone to work | 75.5%±7.3 pts | 66.1% |
| Carpooled | 2.5%±1.7 pts | 4.5% |
| Public transportation | 8.4%±5.5 pts | 12.8% |
| Walked | 0.9%±1.1 pts | 3.1% |
| Worked from home | 5.5%±3.3 pts | 8.6% |
| Mean travel time to work | 25.6 min±3.4 | 29.7 min |
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
How does Census Tract 323 compare with the other tracts in Union County?
Among Union County's tracts with a reliable estimate, Census Tract 323 ranks as shown below (1 = highest).
| Measure | In Union County |
|---|---|
| Population | 114th of 120 |
| Residents per square mile | 108th of 120 |
| Median household income | 85th of 118 |
| Per capita income | 85th of 119 |
| Median home value | 100th of 115 |
| Median gross rent | 72nd of 113 |
| Poverty rate | 17th of 64 |
| Bachelor's degree or higher | 72nd of 114 |
| Median age | 67th of 120 |
| Owner-occupied share | 77th of 115 |
The tracts next to it on Union County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 349 | 82nd | $82,007±$26,483 · within the margin of this tract |
| Tract 339 | 83rd | $81,892±$26,643 · within the margin of this tract |
| Tract 320.02 | 84th | $81,532±$27,067 · within the margin of this tract |
| Tract 323 | 85th | $80,446±$10,687 |
| Tract 352 | 86th | $75,972±$22,020 · within the margin of this tract |
| Tract 313.01 | 87th | $75,809±$32,400 · within the margin of this tract |
| Tract 318.01 | 88th | $75,747±$6,843 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 323?
1 of the 18 figures for Census Tract 323 on this page carries a coefficient of variation over 40% and is marked with a ring: they come from a small sample, so read them as rough.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). 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 · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections