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Zip Code 45503 — Springfield, OH

45503 is a ZIP Code associated with Springfield, OH, located within Clark. The postal region supports an estimated population of 32,638 residents across Data Pending housing units, with a population density of 721.5 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.960730, -83.768200)

Data MetricLocal Statistic
Postal / Zip Code45503
Primary CitySpringfield
State / ProvinceOH
CountyClark
Total Population32,638
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density721.5 people/sq mi
TimezoneAmerica/New_York

How 45503 Compares

MetricZIP 45503Clark CountyOH State Average
Population32,638134,79511,810,293
Median IncomeData PendingN/AN/A
Population Density721.5 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 45501Springfield3.2 miN/AN/A
Zip 45502Springfield3.4 mi17,692N/A
Zip 45505Springfield3.7 mi19,826N/A
Zip 45504Springfield5.2 mi16,363N/A
Zip 45372Tremont City5.3 mi265N/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 →