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Zip Code 45231 — Cincinnati, OH

45231 is a ZIP Code associated with Cincinnati, OH, located within Hamilton. The postal region supports an estimated population of 40,463 residents across Data Pending housing units, with a population density of 1,057.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.246170, -84.538300)

Data MetricLocal Statistic
Postal / Zip Code45231
Primary CityCincinnati
State / ProvinceOH
CountyHamilton
Total Population40,463
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1,057.0 people/sq mi
TimezoneAmerica/New_York

How 45231 Compares

MetricZIP 45231Hamilton CountyOH State Average
Population40,463842,50111,810,293
Median IncomeData PendingN/AN/A
Population Density1,057.0 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 45218Cincinnati1.7 mi3,836N/A
Zip 45240Cincinnati2.7 mi29,600N/A
Zip 45224Cincinnati3.1 mi21,900N/A
Zip 45251Cincinnati3.3 mi20,254N/A
Zip 45239Cincinnati3.6 mi29,607N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →