Census tract · Middlesex County

Census Tract 10.04, Middlesex County, New Jersey

Census Tract 10.04, GEOID 34023001004, in Middlesex County, New Jersey, entirely within South Plainfield. 2,143 residents in the ACS 2020-2024 5-year estimates (±345); the 2020 Census counted 2,336.

Residents, 2020-2024

2,143

±345 (90% margin)
2020 Census count: 2,336

Median household income

$137,727

±$36,181 (90% margin)
Middlesex County: $111,549

Median home value

$486,500

±$53,648 (90% margin)
Middlesex County: $462,900

Median gross rent

$2,422

±$167 (90% margin)
Middlesex County: $1,871

Where is Census Tract 10.04?

Census Tract 10.04 is one of 192 census tracts in Middlesex County, New Jersey. It covers 1.38 square miles of land, 1,699 residents per square mile in 2020. Its GEOID, 34023001004, names it uniquely (how tract numbers and GEOIDs work).

Places Census Tract 10.04 lies in (share of its 2020 census blocks)
Place	Share of the tract
South Plainfield	100%

Census Tract 10.04 (marked with a dot) in Middlesex County, New Jersey. Boundaries: Census Bureau 2024.

Census Tract 10.04 (shaded) and the tracts that border it, numbered. Boundaries: Census Bureau 2024 cartographic boundary file, 1:500,000.

4 census tracts border Census Tract 10.04: Tract 6.03 ($151,000), Tract 6.10 ($133,684), Tract 10.03 ($131,282) and Tract 15.04 ($142,517). 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 10.04?

The 2020-2024 American Community Survey puts Census Tract 10.04's population at 2,143 (±345) in 692 households; the 2020 Census counted 2,336 residents and 842 housing units.

Counts, ACS 2020-2024 5-year estimates
Measure	Tract 10.04	South Plainfield	Middlesex County	New Jersey
Total population	2,143±345	24,473	871,290	9,343,809
Households	692±104	8,351	307,782	3,507,701
Average household size	2.78±0.26	2.90	2.75	2.62
Housing units	708±103	8,530	317,979	3,791,354

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 10.04?

The median resident of Census Tract 10.04 is 42.5 years old; 21.0% are under 18 and 20.3% are 65 or older. The largest group is non-Hispanic Asian residents at 42.9%, then non-Hispanic white residents at 26.7%. 40.0% of residents were born outside the United States.

Age, origin, education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Tract 10.04	South Plainfield	Middlesex County	New Jersey
Median age	42.5±3.6	41.7	39.5	40.1
Under 18 years	21.0%±4.3 pts	20.9%	21.5%	21.8%
65 years and over	20.3%±3.9 pts	19.4%	16.1%	17.2%
Hispanic or Latino (any race)	9.8%±5.4 pts	17.0%	23.6%	22.5%
White alone, not Hispanic	26.7%±8.7 pts	47.9%	37.5%	50.9%
Black or African American alone, not Hispanic	13.6%±7.6 pts	9.7%	9.7%	12.2%
Asian alone, not Hispanic	42.9%±11.3 pts	21.3%	25.4%	10.0%
American Indian and Alaska Native alone, not Hispanic	0.7%±0.8 pts	0.1%	0.1%	0.1%
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±2.1 pts	0.0%	0.0%	0.0%
Two or more races, not Hispanic	6.3%±5.8 pts	3.1%	2.9%	3.5%
Some other race alone, not Hispanic	0.0%±2.1 pts	0.8%	0.8%	0.8%
Born outside the United States	40.0%±8.8 pts	23.9%	35.4%	23.9%
Speak a language other than English at home (age 5+)	54.4%±9.1 pts	34.5%	47.4%	33.1%
Civilian veterans (age 18+)	1.5%±1.7 pts	2.9%	3.0%	3.7%
With a disability	9.2%±4.2 pts	10.9%	10.0%	10.8%
No health insurance coverage	3.4%±2.9 pts	3.2%	7.2%	7.5%
High school graduate or higher (age 25+)	95.2%±4.0 pts	92.5%	89.2%	90.7%
Bachelor's degree or higher (age 25+)	64.4%±7.7 pts	44.0%	45.6%	43.6%
Graduate or professional degree (age 25+)	32.0%±6.5 pts	17.8%	19.4%	17.6%
Lived in the same house a year earlier	81.1%±8.9 pts	93.9%	89.6%	90.4%

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 10.04 earn?

Half of the 692 households in Census Tract 10.04 earn less than $137,727 a year (±$36,181), against $111,549 across Middlesex County: 63rd highest of the county's 187 tracts with a reliable estimate.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Tract 10.04	South Plainfield	Middlesex County	New Jersey
Median household income	$137,727±$36,181	$130,239	$111,549	$103,556
Mean household income	$150,021±$19,198	$148,575	$142,003	$143,363
Per capita income	$50,390±$6,361	$51,315	$50,601	$54,253
People below the poverty line	5.2%±3.6 pts	3.0%	8.6%	9.7%
Children under 18 below the poverty line	2.4%±3.9 pts	1.6%	10.6%	13.0%
Households receiving SNAP	0.7%±1.3 pts	1.0%	7.9%	9.1%
Households with a computer	100.0%±6.3 pts	97.5%	96.5%	95.9%
Households with a broadband subscription	96.0%±3.7 pts	95.5%	94.3%	92.8%

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 10.04?

Owners occupy 42.9% of Census Tract 10.04's occupied homes and renters 57.1%. The median owner-occupied home is valued at $486,500 by its owner (±$53,648). The median renter pays $2,422 a month including utilities, and 24.9% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Tract 10.04	South Plainfield	Middlesex County	New Jersey
Median home value (owner-occupied)	$486,500±$53,648	$470,900	$462,900	$454,400
Median gross rent	$2,422±$167	$2,107	$1,871	$1,720
Renters paying 35% or more of income on rent	24.9%±13.1 pts	34.7%	38.8%	42.7%
Median monthly owner costs, with a mortgage	$2,942±$363	$2,794	$2,877	$2,829
Owner-occupied homes	42.9%±10.1 pts	85.9%	63.6%	63.8%
Renter-occupied homes	57.1%±10.1 pts	14.1%	36.4%	36.2%
Housing units	708±103	8,530	317,979	3,791,354
Single-family detached homes	26.1%±8.0 pts	78.5%	52.4%	52.6%
Mobile homes	0.0%±6.2 pts	0.0%	0.8%	0.9%
Built 2020 or later	0.0%±6.2 pts	1.4%	0.9%	1.1%
Built 2010 to 2019	2.5%±3.5 pts	6.7%	6.6%	6.2%
Built 1939 or earlier	0.0%±6.2 pts	4.5%	10.4%	17.4%
Households with no vehicle	2.6%±3.9 pts	2.5%	8.0%	11.1%

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 10.04 get to work?

69.2% of Census Tract 10.04's workers drive alone and 20.9% work from home. The average trip to work takes 25.8 minutes.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Tract 10.04	South Plainfield	Middlesex County	New Jersey
In the labor force (age 16+)	62.6%±6.4 pts	67.4%	67.2%	66.4%
Unemployment rate	11.5%±10.7 pts	5.6%	6.7%	6.3%
Drove alone to work	69.2%±9.6 pts	72.0%	61.3%	62.2%
Carpooled	7.3%±4.2 pts	7.9%	8.1%	7.7%
Public transportation	0.6%±1.0 pts	2.1%	5.9%	8.1%
Walked	1.7%±1.8 pts	1.0%	2.9%	2.6%
Worked from home	20.9%±8.0 pts	16.4%	18.1%	16.8%
Mean travel time to work	25.8 min±4.4	29.7 min	31.2 min	30.5 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 10.04 compare with the other tracts in Middlesex County?

Among Middlesex County's tracts with a reliable estimate, Census Tract 10.04 ranks as shown below (1 = highest).

Census Tract 10.04's rank among the tracts of Middlesex County and of South Plainfield
Measure	In Middlesex County	In South Plainfield
Population	182nd of 190	7th of 7
Residents per square mile	167th of 192	7th of 7
Median household income	63rd of 187	2nd of 7
Per capita income	93rd of 190	4th of 7
Median home value	63rd of 184	3rd of 7
Median gross rent	23rd of 161	2nd of 5
Bachelor's degree or higher	39th of 189	1st of 7
Median age	67th of 191	2nd of 7
Owner-occupied share	145th of 183	7th of 7

The tracts next to it on Middlesex County's income ladder

Median household income, ACS 2020-2024 5-year estimates
Tract	Rank	Median household income	Residents
Tract 78.05	60th	$139,632±$31,604 · within the margin of this tract	4,040
Tract 62.08	61st	$138,393±$26,347 · within the margin of this tract	8,029
Tract 17.01	62nd	$138,264±$5,138 · within the margin of this tract	5,994
Tract 10.04	63rd	$137,727±$36,181	2,143
Tract 8.01	64th	$136,085±$18,496 · within the margin of this tract	3,922
Tract 86.05	65th	$135,893±$44,384 · within the margin of this tract	3,335
Tract 82.13	66th	$134,365±$21,389 · within the margin of this tract	5,358

"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 10.04?

1 of the 18 figures for Census Tract 10.04 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