Marion County
Marion County has roughly average household income, with a median household income of $77,351. Population has grown 23% since 2000. Median home value has roughly tripled since 2000, reaching $416,400. It sits in the top 10% of US counties for household income.
Population & growth
PEP 2025 EST:355,777 residents (Census Bureau Vintage 2025, released March 2026)
Income & economy
Housing
Race & ethnicity
Detailed origins & ancestry
+ 8 more hispanic origin groups with data
+ 47 more ancestry groups with data
Education
Commute & transportation
Work & employment
People & community
Places similar to Marion County
Compare Marion County to nearby counties
How many people live in Marion County, Oregon?
Marion County, Oregon has about 349,244 residents according to the 2024 American Community Survey.
What is the median household income in Marion County, Oregon?
The typical household in Marion County, Oregon earns about $77,351 a year. Half of households make more than that, and half make less.
Is Marion County, Oregon expensive?
In Marion County, Oregon, the median home is worth about $416,400, and the typical rent is about $1,414 a month.
How educated are people in Marion County, Oregon?
About 26.0% of adults age 25 and over in Marion County, Oregon hold a bachelor's degree or higher.
What is the poverty rate in Marion County, Oregon?
About 13.0% of people in Marion County, Oregon live below the federal poverty line.
Has Marion County, Oregon grown since 1990?
Yes, Marion County, Oregon has grown since 1990. The population has added about 120,761 residents, a change of about 53 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024