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Zip Code 45420 — Dayton, OH

ZIP Code 45420 is associated with Dayton, OH, in Montgomery County. The listed population estimate is 24,411; estimated density is 1,462.7 people per square mile. Among records with population estimates, it ranks #7 of 31 in Montgomery County and #156 of 1,215 in OH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.719000, -84.130450)

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

How 45420 Compares

MetricZIP 45420Montgomery County recordsOH records
Population estimate24,411507,675 (sum)11,810,293 (sum)
Population Density1,462.7 /sq mi----
County population rank#7 of 31----
State population rank#156 of 1,215----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in OH

ZIP CodeCityDistancePopulation estimate
ZIP 45419Dayton2.0 mi17,008
ZIP 45430Dayton2.5 mi7,371
ZIP 45410Dayton2.5 mi14,694
ZIP 45432Dayton2.7 mi15,055
ZIP 45429Dayton3.0 mi26,347

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 →