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

Okmulgee County ZIP Codes

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

County State ZIP Code City Area Codes
Okmulgee County OK 74047 Mounds 539, 918
Okmulgee County OK 74421 Beggs 539, 918
Okmulgee County OK 74431 Dewar 539, 918
Okmulgee County OK 74437 Henryetta 539, 918
Okmulgee County OK 74445 Morris 539, 918
Okmulgee County OK 74447 Okmulgee 539, 918
Okmulgee County OK 74456 Preston 539, 918
Okmulgee County OK 74460 Schulter 539, 918

Geographic Map of Okmulgee 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.