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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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McClain County ZIP Codes

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

County State ZIP Code City Area Codes
McClain County OK 73010 Blanchard 405, 572
McClain County OK 73031 Dibble 405, 572
McClain County OK 73065 Newcastle 405, 572
McClain County OK 73080 Purcell 405, 572
McClain County OK 73093 Washington 405, 572
McClain County OK 73095 Wayne 405, 572
McClain County OK 74831 Byars 405, 572, 580

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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.