Zip Code 45403 — Dayton, OH

ZIP Code 45403 is associated with Dayton, OH, in Montgomery County. The listed population estimate is 13,608; estimated density is 1,669.6 people per square mile. Among records with population estimates, it ranks #18 of 31 in Montgomery County and #316 of 1,215 in OH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.763030, -84.149780)

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

How 45403 Compares

MetricZIP 45403Montgomery County recordsOH records
Population estimate13,608507,675 (sum)11,810,293 (sum)
Population Density1,669.6 /sq mi----
County population rank#18 of 31----
State population rank#316 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 45410Dayton1.2 mi14,694
ZIP 45404Dayton1.9 mi9,826
ZIP 45423Dayton2.2 miN/A
ZIP 45469Dayton2.2 mi168
ZIP 45402Dayton3.1 mi9,407

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 →