ZIP CodesZIP codes in Northampton County, Pennsylvania
Northampton County, Pennsylvania has 29 ZIP codes in this list, from 18001 to 18351. They cover 19 places, among them Bethlehem, Easton, Lehigh Valley and Bangor.
Nothing in this county matches.
The ZIP code areas of Northampton County add up to about 381 square miles of land (988 sq km) as the Census Bureau draws them. The largest is 18013 (Bangor), with 63.0 square miles.
Places with more than one code here: Bethlehem (5 codes), Easton (5 codes), Lehigh Valley (3 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Lehigh Valley, PA 18001.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.