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U.S. ZIP Codes Database 2026

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Pottawatomie County ZIP Codes

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

County State ZIP Code City Area Codes
Pottawatomie County KS 66407 Belvue 785
Pottawatomie County KS 66422 Emmett 785
Pottawatomie County KS 66426 Fostoria 785
Pottawatomie County KS 66432 Havensville 785
Pottawatomie County KS 66520 Olsburg 785
Pottawatomie County KS 66521 Onaga 785
Pottawatomie County KS 66535 Saint George 785
Pottawatomie County KS 66536 Saint Marys 785
Pottawatomie County KS 66547 Wamego 785
Pottawatomie County KS 66549 Westmoreland 785
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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.