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

Franklin County ZIP Codes

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

County State ZIP Code City Area Codes
Franklin County PA 17237 Mont Alto 223, 717
Franklin County PA 17244 Orrstown 223, 717
Franklin County PA 17246 Pleasant Hall 223, 717
Franklin County PA 17247 Quincy 223, 717
Franklin County PA 17250 Rouzerville 223, 717
Franklin County PA 17251 Roxbury 223, 717
Franklin County PA 17252 Saint Thomas 223, 717
Franklin County PA 17254 Scotland 223, 717
Franklin County PA 17256 Shady Grove 717
Franklin County PA 17261 South Mountain 223, 717
Page 28 of 34

Geographic Map of Franklin 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.