Census tract · Middlesex County
Census Tract 9.01, Middlesex County, New Jersey
Census Tract 9.01, GEOID 34023000901, in Middlesex County, New Jersey, entirely within South Plainfield. 2,459 residents in the ACS 2020-2024 5-year estimates (±320); the 2020 Census counted 2,380.
Residents, 2020-2024
2,459
±320 (90% margin)
2020 Census count: 2,380
Median household income
$126,000
±$26,729 (90% margin)
Middlesex County: $111,549
Median home value
$463,900
±$19,689 (90% margin)
Middlesex County: $462,900
Median gross rent
not published
Middlesex County: $1,871
Where is Census Tract 9.01?
Census Tract 9.01 is one of 192 census tracts in Middlesex County, New Jersey. It covers 0.54 square miles of land, 4,407 residents per square mile in 2020. Its GEOID, 34023000901, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| South Plainfield | 100% |
5 census tracts border Census Tract 9.01: Tract 8.01 ($136,085), Tract 8.02 ($128,421), Tract 9.02 ($111,789), Tract 396 in Union County ($106,094) and Tract 397 in Union County ($101,010). 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 9.01?
The 2020-2024 American Community Survey puts Census Tract 9.01's population at 2,459 (±320) in 822 households; the 2020 Census counted 2,380 residents and 787 housing units.
| Measure | Tract 9.01 | South Plainfield |
|---|---|---|
| Total population | 2,459±320 | 24,473 |
| Households | 822±106 | 8,351 |
| Average household size | 2.99±0.23 | 2.90 |
| Housing units | 822±106 | 8,530 |
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 9.01?
The median resident of Census Tract 9.01 is 39.0 years old; 24.8% are under 18 and 18.6% are 65 or older. The largest group is non-Hispanic white residents at 57.2%, then Hispanic or Latino residents (of any race) at 22.1%. 16.3% of residents were born outside the United States.
| Measure | Tract 9.01 | South Plainfield |
|---|---|---|
| Median age | 39.0±4.3 | 41.7 |
| Under 18 years | 24.8%±2.8 pts | 20.9% |
| 65 years and over | 18.6%±4.5 pts | 19.4% |
| Hispanic or Latino (any race) | 22.1%±8.0 pts | 17.0% |
| White alone, not Hispanic | 57.2%±9.1 pts | 47.9% |
| Black or African American alone, not Hispanic | 8.3%±6.0 pts | 9.7% |
| Asian alone, not Hispanic | 10.1%±7.4 pts | 21.3% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.8 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.8 pts | 0.0% |
| Two or more races, not Hispanic | 1.7%±1.5 pts | 3.1% |
| Some other race alone, not Hispanic | 0.6%±0.9 pts | 0.8% |
| Born outside the United States | 16.3%±6.4 pts | 23.9% |
| Speak a language other than English at home (age 5+) | 22.0%±8.2 pts | 34.5% |
| Civilian veterans (age 18+) | 2.5%±1.7 pts | 2.9% |
| With a disability | 9.7%±3.7 pts | 10.9% |
| No health insurance coverage | 7.5%±6.1 pts | 3.2% |
| High school graduate or higher (age 25+) | 87.9%±7.6 pts | 92.5% |
| Bachelor's degree or higher (age 25+) | 38.9%±8.0 pts | 44.0% |
| Graduate or professional degree (age 25+) | 13.0%±5.1 pts | 17.8% |
| Lived in the same house a year earlier | 94.8%±4.2 pts | 93.9% |
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 9.01 earn?
Half of the 822 households in Census Tract 9.01 earn less than $126,000 a year (±$26,729), against $111,549 across Middlesex County: 82nd highest of the county's 187 tracts with a reliable estimate.
| Measure | Tract 9.01 | South Plainfield |
|---|---|---|
| Median household income | $126,000±$26,729 | $130,239 |
| Mean household income | $141,947±$17,821 | $148,575 |
| Per capita income | $47,887±$5,970 | $51,315 |
| People below the poverty line | 7.4%±6.2 pts | 3.0% |
| Children under 18 below the poverty line | 3.8%±5.5 pts | 1.6% |
| Households receiving SNAP | 1.3%±1.9 pts | 1.0% |
| Households with a computer | 99.1%±1.2 pts | 97.5% |
| Households with a broadband subscription | 97.1%±2.6 pts | 95.5% |
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 Census Tract 9.01?
Owners occupy 94.9% of Census Tract 9.01's occupied homes and renters 5.1%. The median owner-occupied home is valued at $463,900 by its owner (±$19,689).
| Measure | Tract 9.01 | South Plainfield |
|---|---|---|
| Median home value (owner-occupied) | $463,900±$19,689 | $470,900 |
| Renters paying 35% or more of income on rent | 38.7%±43.1 pts | 34.7% |
| Median monthly owner costs, with a mortgage | $2,909±$449 | $2,794 |
| Owner-occupied homes | 94.9%±3.3 pts | 85.9% |
| Renter-occupied homes | 5.1%±3.3 pts | 14.1% |
| Housing units | 822±106 | 8,530 |
| Single-family detached homes | 100.0%±5.3 pts | 78.5% |
| Mobile homes | 0.0%±5.3 pts | 0.0% |
| Built 2020 or later | 0.0%±5.3 pts | 1.4% |
| Built 2010 to 2019 | 0.0%±5.3 pts | 6.7% |
| Built 1939 or earlier | 4.5%±4.7 pts | 4.5% |
| Households with no vehicle | 0.0%±5.3 pts | 2.5% |
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 9.01 get to work?
69.0% of Census Tract 9.01's workers drive alone and 20.1% work from home. The average trip to work takes 29.6 minutes. The unemployment rate in 2020-2024 averaged 6.1%.
| Measure | Tract 9.01 | South Plainfield |
|---|---|---|
| In the labor force (age 16+) | 60.8%±6.4 pts | 67.4% |
| Unemployment rate | 6.1%±3.6 pts | 5.6% |
| Drove alone to work | 69.0%±6.3 pts | 72.0% |
| Carpooled | 8.1%±4.8 pts | 7.9% |
| Public transportation | 1.5%±1.7 pts | 2.1% |
| Walked | 0.0%±4.1 pts | 1.0% |
| Worked from home | 20.1%±5.7 pts | 16.4% |
| Mean travel time to work | 29.6 min±3.1 | 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 9.01 compare with the other tracts in Middlesex County?
Among Middlesex County's tracts with a reliable estimate, Census Tract 9.01 ranks as shown below (1 = highest).
| Measure | In Middlesex County | In South Plainfield |
|---|---|---|
| Population | 173rd of 190 | 6th of 7 |
| Residents per square mile | 93rd of 192 | 3rd of 7 |
| Median household income | 82nd of 187 | 6th of 7 |
| Per capita income | 118th of 190 | 7th of 7 |
| Median home value | 81st of 184 | 5th of 7 |
| Bachelor's degree or higher | 111th of 189 | 5th of 7 |
| Median age | 121st of 191 | 7th of 7 |
| Owner-occupied share | 22nd of 183 | 2nd of 7 |
The tracts next to it on Middlesex County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 92 | 79th | $128,365±$25,079 · within the margin of this tract |
| Tract 77.02 | 80th | $127,375±$36,780 · within the margin of this tract |
| Tract 18.03 | 81st | $126,424±$22,925 · within the margin of this tract |
| Tract 9.01 | 82nd | $126,000±$26,729 |
| Tract 86.04 | 83rd | $125,976±$19,986 · within the margin of this tract |
| Tract 72.03 | 84th | $122,904±$25,484 · within the margin of this tract |
| Tract 11 | 85th | $122,828±$30,779 · 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 9.01?
3 of the 17 figures for Census Tract 9.01 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.
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