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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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Pinal County ZIP Codes

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

County State ZIP Code City Area Codes
Pinal County AZ 85221 Bapchule 520
Pinal County AZ 85222 Casa Grande 520
Pinal County AZ 85223 Arizona City 520
Pinal County AZ 85228 Coolidge 520
Pinal County AZ 85230 Casa Grande 520
Pinal County AZ 85231 Eloy 520
Pinal County AZ 85232 Florence 520
Pinal County AZ 85237 Kearny 520
Pinal County AZ 85238 Maricopa 520
Pinal County AZ 85239 Maricopa 520
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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.