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

Chester County ZIP Codes

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

County State ZIP Code City Area Codes
Chester County PA 19351 Lewisville 484
Chester County PA 19352 Lincoln University 484, 610, 835
Chester County PA 19353 Lionville 484
Chester County PA 19354 Lyndell 484, 610, 835
Chester County PA 19355 Malvern 484, 610, 835
Chester County PA 19357 Mendenhall 484
Chester County PA 19358 Modena 484, 610, 835
Chester County PA 19360 New London 484, 610, 835
Chester County PA 19362 Nottingham 223, 410, 443, 484, 610, 667, 717, 835
Chester County PA 19363 Oxford 223, 410, 443, 484, 610, 667, 717, 835
Page 13 of 19

Geographic Map of Chester 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.