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Zip Code 45390 — Union City, OH

45390 is a ZIP Code associated with Union City, OH, located within Darke. The postal region supports an estimated population of 3,432 residents across Data Pending housing units, with a population density of 24.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.218940, -84.767780)

Data MetricLocal Statistic
Postal / Zip Code45390
Primary CityUnion City
State / ProvinceOH
CountyDarke
Total Population3,432
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density24.7 people/sq mi
TimezoneAmerica/New_York

How 45390 Compares

MetricZIP 45390Darke CountyOH State Average
Population3,43251,96911,810,293
Median IncomeData PendingN/AN/A
Population Density24.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 45303Ansonia5.9 mi2,188N/A
Zip 45362Rossburg8.5 mi1,071N/A
Zip 45348New Weston9.6 mi848N/A
Zip 45331Greenville10.6 mi22,356N/A
Zip 45310Burkettsville11.4 mi227N/A

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 →