There are 9 cities in Union County, Ohio.

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Dublin1Ohio48,75449,342-0.25%1,97624.67
Marysville2Ohio28,28325,7072.03%1,73016.35
Plain City3Ohio4,2784,145-0.6%1,7692.42
Richwood4Ohio2,5712,2353.5%2,0491.25
New California5Ohio1,9091,330 9292.06
Milford Center6Ohio9328103.56%2,2790.41
Magnetic Springs7Ohio3002603.45%1,2990.23
Unionville Center8Ohio226239-1.74%1,4210.16
Raymond9Ohio155155 1221.27
showing: 9 rows

Cities in Union County, Ohio by Population (2024)

What is the largest city in Union County, Ohio?

Dublin is the largest city in Union County.

What is the smallest city in Union County, Ohio?

Raymond is the smallest city in Union County.

How many cities are in Union County?

There are 9 cities in Union County, Ohio.

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