Union County, Ohio Cities (2025)

16 cities

City
Rank
2025 Pop.
2020 Pop.
Change
Density
Area (mi²)
Type
Marysville130,23425,7063.09%1,85716.28 City
Jerome township211,4499,5723.62%33833.90 Township
Claibourne township34,2163,5043.74%12234.42 Township
Allen township42,9152,4093.88%9829.62 Township
Darby township52,8652,4243.47%9231.17 Township
Richwood62,6672,2343.37%2,1471.24 Village
Liberty township72,5172,0813.88%6936.23 Township
Union township82,0511,7013.8%5835.60 Township
Taylor township91,8751,5533.82%7126.28 Township
York township101,6221,3343.97%4437.02 Township
Millcreek township111,5981,3243.83%7720.76 Township
Washington township129718063.74%3527.74 Township
Milford Center139658093.32%2,2870.42 Village
Magnetic Springs143142613.63%1,4740.21 Village
Unionville Center15230239-0.86%1,4560.16 Village
Raymond16130155-5.8%1021.27 CDP