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Zip Code 45403 — Dayton, OH

45403 is a ZIP Code associated with Dayton, OH, located within Montgomery. The postal region supports an estimated population of 13,608 residents across Data Pending housing units, with a population density of 1,669.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.763030, -84.149780)

Data MetricLocal Statistic
Postal / Zip Code45403
Primary CityDayton
State / ProvinceOH
CountyMontgomery
Total Population13,608
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1,669.6 people/sq mi
TimezoneAmerica/New_York

How 45403 Compares

MetricZIP 45403Montgomery CountyOH State Average
Population13,608507,67511,810,293
Median IncomeData PendingN/AN/A
Population Density1,669.6 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 45410Dayton1.2 mi14,694N/A
Zip 45404Dayton1.9 mi9,826N/A
Zip 45423Dayton2.2 miN/AN/A
Zip 45469Dayton2.2 mi168N/A
Zip 45402Dayton3.1 mi9,407N/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 →