Find the last 4 digits (ZIP+4) for an address in 37421

ZIP 37421, Chattanooga, TN is filled in. Just type the street address.

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ZIP Code 37421 – Chattanooga, TN

Chattanooga, Tennessee · Hamilton County · Eastern time

ZIP code37421
CityChattanooga
StateTennessee
CountyHamilton County
Population52,985
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area31.7 sq mi
Center (lat, long)35.0275, -85.1536

Area codes in this area

865

These are the area codes that most often serve ZIP 37421 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

30726 Graysville · 3.7 mi37411 Chattanooga · 4.3 mi37412 Chattanooga · 4.6 mi37416 Chattanooga · 4.9 mi37315 Collegedale · 5.9 mi37406 Chattanooga · 6.1 mi37404 Chattanooga · 6.8 mi37302 Apison · 7.5 mi

About ZIP 37421

ZIP code 37421 is assigned to Chattanooga, Tennessee. It lies in Hamilton County. Its Census area covers about 31.7 square miles of land. The closest neighboring ZIP is 30726 (Graysville), about 3.7 miles away.

Every address in 37421 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources