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Zip Code 45404 — Dayton, OH

ZIP Code 45404 is associated with Dayton, OH, in Montgomery County. The listed population estimate is 9,826; estimated density is 502.0 people per square mile. Among records with population estimates, it ranks #22 of 31 in Montgomery County and #382 of 1,215 in OH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.790110, -84.153240)

Data MetricLocal Statistic
Postal / Zip Code45404
Primary CityDayton
State / ProvinceOH
CountyMontgomery
Total Population9,826
Population Density502.0 people/sq mi
TimezoneAmerica/New_York

How 45404 Compares

MetricZIP 45404Montgomery County recordsOH records
Population estimate9,826507,675 (sum)11,810,293 (sum)
Population Density502.0 /sq mi----
County population rank#22 of 31----
State population rank#382 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 45403Dayton1.9 mi13,608
ZIP 45423Dayton2.9 miN/A
ZIP 45410Dayton3.0 mi14,694
ZIP 45405Dayton3.3 mi18,955
ZIP 45402Dayton3.6 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 →