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Zip Code 45373 — Troy, OH

ZIP Code 45373 is associated with Troy, OH, in Miami County. The listed population estimate is 37,565; estimated density is 165.4 people per square mile. Among records with population estimates, it ranks #1 of 11 in Miami County and #63 of 1,215 in OH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.033530, -84.195880)

Data MetricLocal Statistic
Postal / Zip Code45373
Primary CityTroy
State / ProvinceOH
CountyMiami
Total Population37,565
Population Density165.4 people/sq mi
TimezoneAmerica/New_York

How 45373 Compares

MetricZIP 45373Miami County recordsOH records
Population estimate37,565105,795 (sum)11,810,293 (sum)
Population Density165.4 /sq mi----
County population rank#1 of 11----
State population rank#63 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 45312Casstown6.4 mi1,086
ZIP 45371Tipp City6.8 mi22,865
ZIP 45339Ludlow Falls8.0 mi1,057
ZIP 45359Pleasant Hill8.3 mi2,160
ZIP 45383West Milton9.0 mi6,912

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 →