ZIP code 03857

ZIP 03857 is a mid-size town in Rockingham County, New Hampshire, with 9,431 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #38 of 246 ranked by population — larger than 84% of them. The median age here is 39.3 years against 39.1 nationally, a slightly older profile than the country as a whole. 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 ZIP 03857 earn a median of $94,345 a year, 20.1% above the national figure of $78,538. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 4.3% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in ZIP 03857 is valued at $384,900, 26.9% above the national figure, while median gross rent runs $1,648 a month, 17.2% above the national figure, or roughly $19,776 across a full year. A household on the local median income would put about 21% 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 4.1×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 52.4% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

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.

ZIP 03857 is tabulated inside Rockingham County, New Hampshire, one of 36 ZIP areas the Census publishes for that county and 246 across New Hampshire. 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 03857 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 03857 reports a median household income of $94,345, 24% below the $124,065 county median, and close to the $92,797 typical NH ZIP. Owner-occupied homes are valued at a median of $384,900, 17% below the county figure and 13% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $1,648 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

New Hampshire charges 0% statewide, and no local sales tax is layered on top, so the state rate is the full amount collected in 03857.

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 03857 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.