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Zip Code 45420 — Dayton, OH

45420 is a ZIP Code associated with Dayton, OH, located within Montgomery. The postal region supports an estimated population of 24,411 residents across Data Pending housing units, with a population density of 1,462.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.719000, -84.130450)

Data MetricLocal Statistic
Postal / Zip Code45420
Primary CityDayton
State / ProvinceOH
CountyMontgomery
Total Population24,411
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1,462.7 people/sq mi
TimezoneAmerica/New_York

How 45420 Compares

MetricZIP 45420Montgomery CountyOH State Average
Population24,411507,67511,810,293
Median IncomeData PendingN/AN/A
Population Density1,462.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 45419Dayton2.0 mi17,008N/A
Zip 45430Dayton2.5 mi7,371N/A
Zip 45410Dayton2.5 mi14,694N/A
Zip 45432Dayton2.7 mi15,055N/A
Zip 45429Dayton3.0 mi26,347N/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 →