Marion, OH Micro Area
The Marion, OH micro area is one county in Ohio: Marion County. About 65,115 people lived there on July 1, 2025 (Census estimate), 0.4% fewer than in April 2020.
- Population, July 2025
- 65,115 0.4% fewer than in April 2020
- Type
- Micropolitan statistical area
- County
- Marion County
- Land area
- 404 sq mi (1,046 km²)
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- State
- Ohio
- Combined statistical area
- Columbus-Marion-Zanesville, OH
- CBSA code
- 32020
The county in the Marion, OH micro area
| County | Role | Population, July 2025 |
|---|---|---|
| Marion County | Central | 65,115 |
A central county holds the area’s core, an urban area of 10,000 to 49,999 people. This area has no outlying counties: no neighboring county sends enough commuters to join it. A county belongs to one metro or micro area at most, and it counts whole, countryside included.
Principal city
- Marion35,669 people
OMB names the area after its largest principal cities. A principal city is the area’s largest city, plus any other city that is very large or a big job center, and smaller ones with at least as many jobs as working residents (2020 Census and commuting figures). People counts are American Community Survey 2020–2024 5-year estimates.
Part of the Columbus-Marion-Zanesville, OH combined statistical area
OMB joins neighboring metro and micro areas into a combined statistical area when enough people commute between them. The other 8 areas in this one, largest first:
- Columbus, OH Metro Area2,242,028 people
- Zanesville, OH Micro Area87,014 people
- Chillicothe, OH Micro Area76,429 people
- Mount Vernon, OH Micro Area64,002 people
- Athens, OH Micro Area63,197 people
- Bellefontaine, OH Micro Area46,302 people
- Cambridge, OH Micro Area38,379 people
- Washington Court House, OH Micro Area28,552 people
Bordering metro and micro areas, nearest first
Areas with a county on this area’s edge. Distances are straight lines between the areas’ largest cities.
- Bucyrus, OH Micro Area16 mi northeast
- Columbus, OH Metro Area43 mi south
Before using this answer on a form
A metro or micro area is a statistical area that OMB draws for federal statistics. It is not a city, a local government or a mailing address, and it is not a measure of urban and rural: whole counties count, rural parts included. Programs that use metro areas, such as housing income limits or wage rates, can use their own version of these lists; check the program’s own list for an address.
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