HomeNew JerseyMiddlesex CountySouth Plainfield borough
South Plainfield borough, New Jersey: commercial real estate data.
South Plainfield borough is a Census borough of 24,473 people across 8.30 square miles of land, in Middlesex County. Median household income is $130,239, 85.9 percent of occupied homes are owned, and the SBA record carries 50 7(a) approvals to borrowers here worth $24.0 m.
76 sourced place values · tier FULL · 8 sections
South Plainfield
What South Plainfield is
- Census place typeborough
- Land area8.3 sq mi
- Water area0.03 sq mi
- Population per square mile of land2,950
- County holding the largest share of its areaMiddlesex County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
South Plainfield
How many people live in South Plainfield
- Population24,473
- Median age41.7
- Population under 185,121
- Share under 1820.9 percent
- Population 65 and over4,758
- Share 65 and over19.4 percent
- Households8,351
- Family households6,763
- Share of households that are families81.0 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
South Plainfield
Income and work in South Plainfield
- Median household income$130,239
- Per capita income$51,315
- Civilian labor force13,462
- Employed12,708
- Unemployed754 plus or minus 223
- Unemployment rate5.6 percent plus or minus 1.6
- Adults 25 and over17,605
- Adults 25 and over with a high school diploma or higher92.5 percent
- Adults 25 and over with a bachelor degree or higher44.0 percent
- Adults 25 and over with a graduate degree17.8 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
South Plainfield
Housing in South Plainfield
- Housing units8,530
- Occupied units8,351
- Vacant units179 plus or minus 119
- Vacancy rate2.1 percent plus or minus 1.4
- Owner occupied7,174
- Renter occupied1,177
- Ownership rate85.9 percent
- Median owner-occupied home value$470,900
- Median gross rent, monthly$2,107
- Annual rent as a share of median income19.4 percent
- Single family units7,161
- Share single family84.0 percent
- Units in buildings of two or more1,368 plus or minus 290
- Share in buildings of two or more16.0 percent plus or minus 3.4
- Mobile homes1 plus or minus 4
- Median year structure built1964
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
South Plainfield
How South Plainfield gets to work
- Workers 16 and over who commute10,356
- Commuting under 15 minutes2,153
- Share commuting under 15 minutes20.8 percent
- Commuting 30 minutes or more4,884
- Share commuting 30 minutes or more47.2 percent
- Drove alone72.0 percent
- Carpooled7.9 percent plus or minus 2.0
- Public transport2.1 percent plus or minus 0.9
- Walked1.0 percent plus or minus 0.5
- Worked from home16.4 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
South Plainfield
SBA 7(a) lending to South Plainfield borrowers
- Approvals50
- Gross approval$24,039,500
- Average approval$480,790
- Median approval$240,000
- Ninetieth percentile approval$1,667,000
- Largest approval$2,976,000
- Jobs supported1,532
- Jobs per approval30.6
- Loans with a final outcome8
- Paid in full7
- Charged off1
- Median term120 months
- Share on real estate terms of 20 years or more6.0 percent
- Share to franchises14.0 percent
- Distinct lenders22
- Distinct industries by NAICS37
A charge-off rate is not published here. only 8 resolved loans, too few to publish a rate, and a rate over that few outcomes would move several points on one loan.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
South Plainfield
SBA 504 lending to South Plainfield borrowers
- Approvals11
- Gross approval$11,655,000
- Average approval$1,059,545
- Median approval$930,000
- Largest approval$2,377,000
- Jobs supported147
- Loans with a final outcome3
- Charged off0
- Median term240 months
- Distinct CDCs4
US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
Middlesex County, not South Plainfield
Middlesex County context, not South Plainfield figures
These are Middlesex County figures. There is no place level equivalent published for any of them, so they are shown as the county backdrop and never as South Plainfield measurements.
- Establishments in Middlesex County22,314
- Employment at those establishments, Middlesex County434,143
- Covered employment, Middlesex County430,555
- Average annual pay, Middlesex County$82,400
- Average weekly wage, Middlesex County$1,585
- Housing units permitted, Middlesex County1,792
- Of those, single family, Middlesex County677
- County product, 2024, Middlesex County$86,704,508,000
- County product change over the prior year, Middlesex County4.3 percent
- Average income of an arriving household, Middlesex County$90,589
Every figure in this section is published for Middlesex County as a whole and is not a measurement of South Plainfield. It is here because a county backdrop is what a credit committee reads a place against, and it is labelled so that it can never be quoted as the place's own.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual. US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024. US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Coverage
What this page does not hold.
Every item below could be filled with a plausible figure. None of them is. On a page a lender may read, a number that cannot be traced is worse than an absence, so the absences are named.
- This place is not listed as a community in the FEMA Community Status Book, so no NFIP participation or CRS class is shown.
- Parcel level detail, zoning and flood zone at an address are resolved in the platform, not on this page.
SBA figures count approvals to borrowers whose address is in the place. They are not approvals for projects inside the place boundary: the tape records a borrower city and a project county, and those can differ.
Common questions
South Plainfield questions, answered from the record.
How many people live in South Plainfield, New Jersey?
24,473, in 8,351 households. South Plainfield borough covers 8.30 square miles of land, which is 2,950 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is South Plainfield in?
Middlesex County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in South Plainfield?
$130,239. The median owner-occupied home is valued at $470,900. Median gross rent is $2,107 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
How much SBA lending goes to South Plainfield businesses?
50 7(a) approvals totalling $24.0 m, across 22 lenders, median approval $240,000, plus 11 504 approvals worth $11.7 m. These count approvals to borrowers whose address is in South Plainfield, not projects sited inside the place boundary, and they are approvals recorded in the release rather than loans disbursed.
Do SBA loans to South Plainfield borrowers get paid back?
No rate is published for South Plainfield. only 8 resolved loans, too few to publish a rate, and a percentage over that few outcomes would move several points on a single loan. The counts are shown instead.
Are the county figures on this page South Plainfield figures?
No, and they are labelled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Middlesex County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of South Plainfield.
Is zoning published for South Plainfield?
Not yet. The zoning layer is in build. Nothing on this page presents parcel level zoning.