ZIP Code 45390
About Union City
Union City is a village in Darke County, Ohio, United States. The population was 1,582 at the 2020 census. It is directly across the state line from its twin city of Union City, Indiana.
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Area Profile
US Census (ACS 5-year · Gazetteer)
3,349
population
$46,974
median household income
63
people / sq mi
$111,500
median home value
$639
median gross rent
39.6
median age
1,434
housing units
1,274
households
53.6
land area (sq mi)