How Marion County Compares

Marion County

40.1 years

Ohio Average

40.1 years

Rank #66 of 88 in state

National

38.9 years

3.1% above

National Distribution

Where Marion County falls among all 3,222 U.S. counties for median age.

21.4 years 86.2 years

■ Marion County: 40.1 years

Ranking Context

Rank	County	Value
#2,091	Rensselaer County, NY	40.1 years
#2,092	Delaware County, OH	40.1 years
#2,093	Huron County, OH	40.1 years
#2,094	Marion County, OH	40.1 years
#2,095	Warren County, OH	40.1 years
#2,096	Linn County, OR	40.1 years
#2,097	Greenwood County, SC	40.1 years

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Median Age in Marion County, Ohio

Marion County, Ohio has a median age of 40.1 years, which ranks #2,094 of 3,222 out of 3,222 counties nationwide. This is 3.1% above the national value of 38.9 years.

Within Ohio, Marion County ranks #66 of 88 out of 88 counties. This places it in the 35th percentile nationally.

The median age of the total population. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.

About this data

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.