Northfield, NJ population, income and ZIP codes

Northfield city is a mid-size town in New Jersey, with 8,427 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #193 of 700 ranked by population — larger than 72% of them. The median age here is 44.7 years against 39.1 nationally, a slightly older 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 Northfield city earn a median of $104,042 a year, 32.5% above the national figure of $78,538 and 3% below the $106,926 median for the 543 New Jersey cities we cover. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 4.4% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Northfield city is valued at $275,900, 9.1% below the national figure and 33% below the $412,500 peer median, while median gross rent runs $1,554 a month, 10.5% above the national figure, or roughly $18,648 across a full year. A household on the local median income would put about 17.9% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 2.7×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 87.8% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

All values below were released by the Census for this exact geography, with no gap-filling on our side. 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.