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Zip Code 45440 — Dayton, OH

ZIP Code 45440 is associated with Dayton, OH, in Greene County. The listed population estimate is 22,358; estimated density is 938.6 people per square mile. Among records with population estimates, it ranks #4 of 17 in Greene County and #177 of 1,215 in OH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.674980, -84.100010)

Data MetricLocal Statistic
Postal / Zip Code45440
Primary CityDayton
State / ProvinceOH
CountyGreene
Total Population22,358
Population Density938.6 people/sq mi
TimezoneAmerica/New_York

How 45440 Compares

MetricZIP 45440Greene County recordsOH records
Population estimate22,358204,272 (sum)11,810,293 (sum)
Population Density938.6 /sq mi----
County population rank#4 of 17----
State population rank#177 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 45430Dayton2.8 mi7,371
ZIP 45305Bellbrook2.9 mi11,498
ZIP 45429Dayton3.4 mi26,347
ZIP 45420Dayton3.4 mi24,411
ZIP 45459Dayton4.1 mi28,553

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 →