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.

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Pennsylvania ZIP Codes

Complete postal directory, details, and geographic map for the State of Pennsylvania.

State ZIP Code City County Area Codes
PA 19465 Pottstown Chester County 484, 610, 835
PA 19468 Royersford Montgomery County 484, 610, 835
PA 19470 Saint Peters Chester County 484, 610, 835
PA 19472 Sassamansville Montgomery County 484, 610, 835
PA 19473 Schwenksville Montgomery County 215, 267, 445, 484, 610, 835
PA 19474 Skippack Montgomery County 484, 610, 835
PA 19475 Spring City Chester County 484, 610, 835
PA 19477 Spring House Montgomery County 215, 267, 445
PA 19478 Spring Mount Montgomery County 484, 610, 835
PA 19480 Uwchland Chester County 484
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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.