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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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Riley County ZIP Codes

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

County State ZIP Code City Area Codes
Riley County KS 66449 Leonardville 785
Riley County KS 66502 Manhattan 785
Riley County KS 66503 Manhattan 785
Riley County KS 66505 Manhattan 785
Riley County KS 66506 Manhattan 785
Riley County KS 66517 Ogden 785
Riley County KS 66531 Riley 785
Riley County KS 66554 Randolph 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.