Census tract · Middlesex County
Census Tract 85.01, Middlesex County, New Jersey
Census Tract 85.01, GEOID 34023008501, in Middlesex County, New Jersey, entirely within South Brunswick Township. 4,837 residents in the ACS 2020-2024 5-year estimates (±565); the 2020 Census counted 5,106.
Residents, 2020-2024
4,837
±565 (90% margin)
2020 Census count: 5,106
Median household income
$112,460
±$24,614 (90% margin)
Middlesex County: $111,549
Median home value
$453,700
±$154,003 (90% margin)
Middlesex County: $462,900
Median gross rent
$1,945
±$134 (90% margin)
Middlesex County: $1,871
Where is Census Tract 85.01?
Census Tract 85.01 is one of 192 census tracts in Middlesex County, New Jersey. It covers 3.58 square miles of land, 1,425 residents per square mile in 2020. Its GEOID, 34023008501, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| South Brunswick Township | 100% |
| Monmouth Junction | 30% |
8 census tracts border Census Tract 85.01: Tract 62.08 ($138,393), Tract 84.04 ($119,872), Tract 84.05 ($219,038), Tract 84.06 ($158,889), Tract 85.02 ($231,983), Tract 85.04 ($133,315), Tract 85.05 ($159,494) and Tract 85.06 ($167,860). 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 85.01?
The 2020-2024 American Community Survey puts Census Tract 85.01's population at 4,837 (±565) in 2,047 households; the 2020 Census counted 5,106 residents and 2,061 housing units.
| Measure | Tract 85.01 | South Brunswick Township |
|---|---|---|
| Total population | 4,837 ±565 | 47,137 |
| Households | 2,047 ±196 | 16,770 |
| Average household size | 2.36 ±0.21 | 2.81 |
| Housing units | 2,105 ±198 | 16,993 |
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 85.01?
The median resident of Census Tract 85.01 is 31.7 years old; 27.1% are under 18 and 5.7% are 65 or older. The largest group is non-Hispanic Asian residents at 45.4%, then non-Hispanic white residents at 26.1%. 48.9% of residents were born outside the United States.
| Measure | Tract 85.01 | South Brunswick Township |
|---|---|---|
| Median age | 31.7 ±2.6 | 41.8 |
| Under 18 years | 27.1% ±4.8 pts | 23.2% |
| 65 years and over | 5.7% ±1.6 pts | 14.5% |
| Hispanic or Latino (any race) | 12.7% ±7.4 pts | 7.4% |
| White alone, not Hispanic | 26.1% ±7.3 pts | 33.1% |
| Black or African American alone, not Hispanic | 9.2% ±4.7 pts | 4.9% |
| Asian alone, not Hispanic | 45.4% ±7.8 pts | 50.5% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.9 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.9 pts | 0.1% |
| Two or more races, not Hispanic | 6.7% ±3.8 pts | 3.1% |
| Some other race alone, not Hispanic | 0.0% ±0.9 pts | 0.9% |
| Born outside the United States | 48.9% ±7.4 pts | 42.2% |
| Speak a language other than English at home (age 5+) | 61.0% ±7.7 pts | 52.7% |
| Civilian veterans (age 18+) | 1.7% ±1.7 pts | 2.5% |
| With a disability | 8.1% ±4.4 pts | 7.5% |
| No health insurance coverage | 2.6% ±3.1 pts | 3.6% |
| High school graduate or higher (age 25+) | 93.4% ±3.7 pts | 95.0% |
| Bachelor's degree or higher (age 25+) | 59.6% ±8.8 pts | 68.9% |
| Graduate or professional degree (age 25+) | 25.7% ±6.4 pts | 33.1% |
| Lived in the same house a year earlier | 92.6% ±4.8 pts | 92.8% |
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 85.01 earn?
Half of the 2,047 households in Census Tract 85.01 earn less than $112,460 a year (±$24,614), against $111,549 across Middlesex County: 100th highest of the county's 187 tracts with a reliable estimate. 10.6% of residents live below the poverty line.
| Measure | Tract 85.01 | South Brunswick Township |
|---|---|---|
| Median household income | $112,460 ±$24,614 | $150,933 |
| Mean household income | $114,676 ±$14,956 | $190,672 |
| Per capita income | $49,000 ±$6,736 | $68,610 |
| People below the poverty line | 10.6% ±6.6 pts | 4.5% |
| Children under 18 below the poverty line | 17.9% ±13.7 pts | 5.0% |
| Households receiving SNAP | 6.0% ±4.2 pts | 3.3% |
| Households with a computer | 97.6% ±2.3 pts | 98.4% |
| Households with a broadband subscription | 97.9% ±2.2 pts | 97.5% |
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 85.01?
Owners occupy 11.8% of Census Tract 85.01's occupied homes and renters 88.2%. The median owner-occupied home is valued at $453,700 by its owner (±$154,003). The median renter pays $1,945 a month including utilities, and 31.0% of renters pay 35% or more of their income on rent.
| Measure | Tract 85.01 | South Brunswick Township |
|---|---|---|
| Median home value (owner-occupied) | $453,700 ±$154,003 | $582,700 |
| Median gross rent | $1,945 ±$134 | $1,935 |
| Renters paying 35% or more of income on rent | 31.0% ±10.2 pts | 28.5% |
| Median monthly owner costs, with a mortgage | $2,667 ±$847 | $3,481 |
| Owner-occupied homes | 11.8% ±5.4 pts | 76.9% |
| Renter-occupied homes | 88.2% ±5.4 pts | 23.1% |
| Housing units | 2,105 ±198 | 16,993 |
| Single-family detached homes | 7.9% ±4.8 pts | 54.9% |
| Mobile homes | 6.0% ±3.6 pts | 2.6% |
| Built 2020 or later | 0.0% ±2.1 pts | 0.8% |
| Built 2010 to 2019 | 6.2% ±4.2 pts | 9.1% |
| Built 1939 or earlier | 0.7% ±1.2 pts | 2.4% |
| Households with no vehicle | 13.7% ±7.3 pts | 4.1% |
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 85.01 get to work?
68.6% of Census Tract 85.01's workers drive alone and 23.0% work from home. The average trip to work takes 34.9 minutes. The unemployment rate in 2020-2024 averaged 8.7%.
| Measure | Tract 85.01 | South Brunswick Township |
|---|---|---|
| In the labor force (age 16+) | 82.3% ±5.6 pts | 72.8% |
| Unemployment rate | 8.7% ±5.0 pts | 5.3% |
| Drove alone to work | 68.6% ±7.4 pts | 58.8% |
| Carpooled | 5.2% ±4.1 pts | 6.3% |
| Public transportation | 2.5% ±2.5 pts | 4.9% |
| Walked | 0.8% ±1.4 pts | 0.4% |
| Worked from home | 23.0% ±7.1 pts | 28.1% |
| Mean travel time to work | 34.9 min ±4.7 | 34.4 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 85.01 compare with the other tracts in Middlesex County?
Among Middlesex County's tracts with a reliable estimate, Census Tract 85.01 ranks as shown below (1 = highest).
| Measure | In Middlesex County |
|---|---|
| Population | 74th of 190 |
| Residents per square mile | 173rd of 192 |
| Median household income | 100th of 187 |
| Per capita income | 107th of 190 |
| Median home value | 89th of 184 |
| Median gross rent | 70th of 161 |
| Poverty rate | 37th of 83 |
| Bachelor's degree or higher | 53rd of 189 |
| Median age | 175th of 191 |
| Owner-occupied share | 178th of 183 |
The tracts next to it on Middlesex County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 15.02 | 97th | $114,886±$32,275 · within the margin of this tract |
| Tract 26.03 | 98th | $114,714±$15,779 · within the margin of this tract |
| Tract 62.07 | 99th | $114,098±$11,582 · within the margin of this tract |
| Tract 85.01 | 100th | $112,460±$24,614 |
| Tract 79.14 | 101st | $112,132±$31,441 · within the margin of this tract |
| Tract 30.01 | 102nd | $111,964±$24,877 · within the margin of this tract |
| Tract 9.02 | 103rd | $111,789±$18,335 · 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 85.01?
Every figure for Census Tract 85.01 on this page has a coefficient of variation under 40%, the Census Bureau's threshold for a usable estimate.
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