North Plainfield, NJ population, income and ZIP codes

North Plainfield borough is a mid-size town in New Jersey, with 22,667 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #46 of 700 ranked by population — larger than 93% of them. The median age here is 36.9 years against 39.1 nationally, a slightly younger profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in North Plainfield borough earn a median of $83,529 a year, 6.4% above the national figure of $78,538 and 22% below the $106,926 median for the 543 New Jersey cities we cover. Median household income counts every pre-tax dollar arriving at an address — wages, self-employment, Social Security, pensions, interest and public assistance — for everyone living there, so multi-earner households pull the figure up even where individual pay is modest. Poverty reaches 14% of residents here, above the 12.4% national rate.

The typical owner-occupied home in North Plainfield borough is valued at $350,700, 15.6% above the national figure and 15% below the $412,500 peer median, while median gross rent runs $1,651 a month, 17.4% above the national figure, or roughly $19,812 across a full year. A household on the local median income would put about 23.7% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 4.2×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 55.5% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

Median income runs above the national figure while poverty also runs above it — a split distribution, not a uniformly comfortable place. Averages hide that; the two numbers together do not.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.