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.

42,735 verified records
All states and U.S. territories
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State directory

Tennessee ZIP Codes

Complete postal directory, details, and geographic map for the State of Tennessee.

State ZIP Code City County Area Codes
TN 37391 Turtletown Polk County 423, 828
TN 37394 Viola Warren County 931
TN 37396 Whiteside Marion County 423, 706, 762
TN 37397 Whitwell Marion County 423, 931
TN 37398 Winchester Franklin County 931
TN 37401 Chattanooga Hamilton County 423
TN 37402 Chattanooga Hamilton County 423
TN 37403 Chattanooga Hamilton County 423
TN 37404 Chattanooga Hamilton County 423, 706, 762
TN 37405 Chattanooga Hamilton County 423
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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.