Find the last 4 digits (ZIP+4) for an address in 45231

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ZIP Code 45231 – Cincinnati, OH

Cincinnati, Ohio · Hamilton County · Eastern time

ZIP code45231
CityCincinnati
StateOhio
CountyHamilton County
Population40,463
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area14.78 sq mi
Center (lat, long)39.2475, -84.5348

Area codes in this area

283513

These are the area codes that most often serve ZIP 45231 (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

45218 Cincinnati · 1.5 mi45299 Cincinnati · 1.7 mi45240 Cincinnati · 2.7 mi45224 Cincinnati · 3.1 mi45251 Cincinnati · 3.9 mi45239 Cincinnati · 3.9 mi45215 Cincinnati · 4 mi45216 Cincinnati · 4.3 mi

About ZIP 45231

ZIP code 45231 is assigned to Cincinnati, Ohio. It lies in Hamilton County. Its Census area covers about 14.78 square miles of land. The closest neighboring ZIP is 45218 (Cincinnati), about 1.5 miles away.

Every address in 45231 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