Rocky Hill, NJ population, income and ZIP codes

Rocky Hill borough is a very small community in New Jersey, with 814 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #575 of 700 ranked by population — larger than 17% of them. The median age here is 42.8 years against 39.1 nationally, a slightly older profile than the country as a whole. 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 Rocky Hill borough earn a median of $127,344 a year, 62.1% above the national figure of $78,538 and 19% 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 4.3% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Rocky Hill borough is valued at $608,200, 100.5% above the national figure and 47% above the $412,500 peer median, while median gross rent runs $1,660 a month, 18.1% above the national figure, or roughly $19,920 across a full year. A household on the local median income would put about 15.6% 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 4.8×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 75.9% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

With 814 residents, a handful of survey responses moves every median on this page. Compare Rocky Hill borough against its county rather than against national figures.

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.