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

Louisa County ZIP Codes

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

County State ZIP Code City Area Codes
Louisa County IA 52640 Morning Sun 319
Louisa County IA 52646 Oakville 309, 319
Louisa County IA 52653 Wapello 309, 319
Louisa County IA 52737 Columbus City 319
Louisa County IA 52738 Columbus Junction 319
Louisa County IA 52752 Grandview 319
Louisa County IA 52754 Letts 319, 563
Louisa County VA 22942 Gordonsville 434, 540, 826
Louisa County VA 23024 Bumpass 540, 804, 826
Louisa County VA 23093 Louisa 434, 540, 804, 826
Page 1 of 2

Geographic Map of Louisa 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.