Llewellyn Park, NJ population, income and ZIP codes

Llewellyn Park CDP is a very small community in New Jersey, with 536 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #608 of 700 ranked by population — larger than 13% of them. The median age here is 43.5 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 Llewellyn Park CDP earn a median of $179,333 a year, 128.3% above the national figure of $78,538 and 68% 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 2.4% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Llewellyn Park CDP is valued at $1,293,800, 326.4% above the national figure and 214% above the $412,500 peer median, while median gross rent runs $2,224 a month, 58.2% above the national figure, or roughly $26,688 across a full year. A household on the local median income would put about 14.9% 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 7.2×, 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. 64.6% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. 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 7.2× 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. With 536 residents, a handful of survey responses moves every median on this page. Compare Llewellyn Park CDP 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.