Martinsville, NJ population, income and ZIP codes

Martinsville CDP is a mid-size town in New Jersey, with 12,016 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #117 of 700 ranked by population — larger than 83% of them. The median age here is 45.9 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. 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 Martinsville CDP earn a median of $206,839 a year, 163.4% above the national figure of $78,538 and 93% above the $106,926 median for the 543 New Jersey cities we cover. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 0.9% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Martinsville CDP is valued at $702,700, 131.6% above the national figure and 70% above the $412,500 peer median, while median gross rent runs $2,183 a month, 55.3% above the national figure, or roughly $26,196 across a full year. A household on the local median income would put about 12.7% 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 3.4×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 94.5% 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. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

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.