There are 8 cities in Marion County, Ohio.

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Marion1Ohio34,15136,008-1.69%2,89811.79
Prospect2Ohio1,0401,069-0.76%1,4360.72
La Rue3Ohio667683-0.6%1,3950.48
Caledonia4Ohio547561-0.91%2,3680.23
New Bloomington5Ohio408413-0.49%9270.44
Morral6Ohio367374-0.54%1362.70
Waldo7Ohio317321-0.31%4890.65
Green Camp8Ohio297309-1.33%8790.34
showing: 8 rows

Cities in Marion County, Ohio by Population (2024)

What is the largest city in Marion County, Ohio?

Marion is the largest city in Marion County.

What is the smallest city in Marion County, Ohio?

Green Camp is the smallest city in Marion County.

How many cities are in Marion County?

There are 8 cities in Marion County, Ohio.

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