How Marion County Compares

Marion County

37.5 years

Oregon Average

37.5 years

Rank #32 of 36 in state

National

38.9 years

3.6% below

National Distribution

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

21.4 years 86.2 years

■ Marion County: 37.5 years

Ranking Context

Rank	County	Value
#2,676	Lincoln County, MO	37.5 years
#2,677	Fallon County, MT	37.5 years
#2,678	Guilford County, NC	37.5 years
#2,679	Marion County, OR	37.5 years
#2,680	Mellette County, SD	37.5 years
#2,681	Rockwall County, TX	37.5 years
#2,682	Smith County, TX	37.5 years

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Median Age in Marion County, Oregon

Marion County, Oregon has a median age of 37.5 years, which ranks #2,679 of 3,222 out of 3,222 counties nationwide. This is 3.6% below the national value of 38.9 years.

Within Oregon, Marion County ranks #32 of 36 out of 36 counties. This places it in the 17th 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.