U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

42,735 verified records
All states and U.S. territories
Maps and coordinates
County directory

Northampton County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Northampton County.

County State ZIP Code City Area Codes
Northampton County PA 18063 Martins Creek 484, 610, 835
Northampton County PA 18064 Nazareth 484, 610, 835
Northampton County PA 18067 Northampton 484, 610, 835
Northampton County PA 18072 Pen Argyl 272, 484, 570, 610, 835
Northampton County PA 18083 Stockertown 484, 610, 835
Northampton County PA 18085 Tatamy 484, 610, 835
Northampton County PA 18086 Treichlers 484, 610, 835
Northampton County PA 18088 Walnutport 484, 610, 835
Northampton County PA 18091 Wind Gap 272, 484, 570, 610, 835
Northampton County PA 18343 Mount Bethel 272, 484, 570, 610, 835, 908
Page 4 of 6

Geographic Map of Northampton County

Postal context

About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.