ZIP code 07931

ZIP 07931 is a small town in Somerset County, New Jersey, with 3,271 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #477 of 598 ranked by population — larger than 20% of them. The median age here is 47 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in ZIP 07931 earn a median of $159,013 a year, 102.5% above the national figure of $78,538. 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 4.8% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in ZIP 07931 is valued at $1,084,200, 257.4% above the national figure, while median gross rent runs $3,469 a month, 146.7% above the national figure, or roughly $41,628 across a full year. A household on the local median income would put about 26.2% 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 6.8×, against roughly 3.9× nationally, so buying is out of reach on local earnings alone and the ownership market leans on outside income, equity or dual high earners. 84.2% 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.

Home values sit at 6.8× median household income, far past the 3.9× national mark, so ownership costs here are set by something other than local wages — second homes, retirees with equity, or commuters earning elsewhere.

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.

ZIP 07931 is tabulated inside Somerset County, New Jersey, one of 27 ZIP areas the Census publishes for that county and 598 across New Jersey. Population sits in the small-town band, typically one main street plus the addresses that feed into it. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 07931 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 07931 reports a median household income of $159,013, 3% above the $153,785 county median, and 46% above the $109,182 typical NJ ZIP. Owner-occupied homes are valued at a median of $1,084,200, 93% above the county figure and 156% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $3,469 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

New Jersey charges 6.625% statewide, and no local sales tax is layered on top, so the state rate is the full amount collected in 07931.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 07931 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.