Plymouth, NH population, income and ZIP codes

Plymouth CDP is a small town in New Hampshire, with 4,877 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #27 of 100 ranked by population — larger than 73% of them. The median age here is 23.2 years against 39.1 nationally, a distinctly younger profile, typical of places with students, military posts or a fast-growing family population. 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 Plymouth CDP earn a median of $77,368 a year, 1.5% below the national figure of $78,538 and within a couple of points of the $77,368 median for the 65 New Hampshire 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 16.4% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Plymouth CDP is valued at $274,200, 9.6% below the national figure and within a couple of points of the $271,300 peer median, while median gross rent runs $1,312 a month, 6.7% below the national figure, or roughly $15,744 across a full year. A household on the local median income would put about 20.3% 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 3.5×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 47.8% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

A median age of 23.2 means a large student or early-career population; income medians in places like this understate household resources, since many residents are supported from outside the address.

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.