ZIP Code 18603

ZIP code 18603 is classified by USPS as a standard delivery area and covers roughly 133.5 square miles in Berwick, Columbia County, Pennsylvania. The area is home to 19,320 residents, producing a population density of 145 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 18603 against Pennsylvania and the nation.

On the economic side, the median household income for ZIP 18603 sits at $60,352 (22% below the Pennsylvania average), while per-capita income is $33,105. The poverty rate stands at 13.4% and the unemployment rate at 5.9%. On housing, the median home value is $170,500 (25% below the state average) with median rent at $810 per month, and 71.7% of occupied units are owner-occupied, a direct signal of whether 18603 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 22.1% of adults hold a bachelor's degree or higher, the median age is 45.3, and the average commute is 23 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Columbia County, so you can benchmark 18603 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →