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.

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Estill County ZIP Codes

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

County State ZIP Code City Area Codes
Estill County KY 40336 Irvine 606, 859
Estill County KY 40472 Ravenna 606
Estill County KY 40495 Winston 606

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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.