ZIP code 17851

ZIP 17851 is a mid-size town in Northumberland County, Pennsylvania, with 7,174 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #515 of 1,833 ranked by population — larger than 71% of them. The median age here is 44.2 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 17851 earn a median of $53,808 a year, 31.5% below the national figure of $78,538. Median household income counts every pre-tax dollar arriving at an address — wages, self-employment, Social Security, pensions, interest and public assistance — for everyone living there, so multi-earner households pull the figure up even where individual pay is modest. Poverty reaches 15.9% of residents here, above the 12.4% national rate.

The typical owner-occupied home in ZIP 17851 is valued at $73,200, 75.9% below the national figure, while median gross rent runs $802 a month, 43% below the national figure, or roughly $9,624 across a full year. A household on the local median income would put about 17.9% 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 1.4×, against roughly 3.9× nationally, so purchase prices are unusually low against local pay, the pattern in places where supply is plentiful and wage growth has been flat. 76.4% 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.

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 17851 is tabulated inside Northumberland County, Pennsylvania, one of 22 ZIP areas the Census publishes for that county and 1,833 across Pennsylvania. 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 17851 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 17851 reports a median household income of $53,808, 9% below the $58,938 county median, and 23% below the $70,000 typical PA ZIP. Owner-occupied homes are valued at a median of $73,200, 59% below the county figure and 61% below the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $802 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

Pennsylvania charges 6% statewide, and local governments overlapping 17851 may add county, city or special-district levies on top. We publish the state floor for this ZIP rather than guessing a combined figure, because ZIP boundaries and taxing-district boundaries were drawn for different purposes and do not line up.

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 17851 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.