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Zip Code 45203 — Cincinnati, OH

45203 is a ZIP Code associated with Cincinnati, OH, located within Hamilton. 45203 ranks #47 out of 54 ZIP codes in Hamilton County by population (and #728 out of 1,232 in OH). The area supports an estimated population of 2,436 residents across Data Pending housing units, with a population density of 785.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.104030, -84.533370)

Data MetricLocal Statistic
Postal / Zip Code45203
Primary CityCincinnati
State / ProvinceOH
CountyHamilton
Total Population2,436
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density785.7 people/sq mi
TimezoneAmerica/New_York

How 45203 Compares

MetricZIP 45203Hamilton CountyOH State Average
Population2,436842,501 (Total)11,810,293 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density785.7 /sq mi----
County Pop Rank#47 of 54----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 45214Cincinnati1.4 mi8,630N/A
Zip 45202Cincinnati1.7 mi17,869N/A
Zip 45219Cincinnati1.9 mi20,012N/A
Zip 45204Cincinnati2.2 mi8,412N/A
Zip 45205Cincinnati2.3 mi18,651N/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 →