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

Sangamon County ZIP Codes

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

County State ZIP Code City Area Codes
Sangamon County IL 62756 Springfield 217
Sangamon County IL 62757 Springfield 217
Sangamon County IL 62761 Springfield 217
Sangamon County IL 62762 Springfield 217
Sangamon County IL 62763 Springfield 217
Sangamon County IL 62764 Springfield 217
Sangamon County IL 62765 Springfield 217
Sangamon County IL 62766 Springfield 217
Sangamon County IL 62767 Springfield 217
Sangamon County IL 62769 Springfield 217
Page 5 of 6

Geographic Map of Sangamon 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.