Oregon County Maps
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Marion County, Oregon
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Marion County, Oregon Map
A detailed map of Marion County. Click on a nearby County to view more information about that County. County boundaries are from the U.S. Census Bureau's 2025 TIGER/Line files.
Map of Counties in Oregon
An interactive map of Counties in Oregon. Click on a County to view more information about that County. County boundaries are from the U.S. Census Bureau's 2025 TIGER/Line files.
About Marion County, Oregon
Marion County is one of the 36 counties in the U.S. state of Oregon. The population was 345,920 at the 2020 census, making it the 5th most populous county in Oregon. The county seat is Salem, which is also the state capital of Oregon. The county was originally named the Champooick District, after Champoeg, a meeting place on the Willamette River. On September 3, 1849, the territorial legislature renamed it in honor of Francis Marion, a Continental Army general from South Carolina who served in the American Revolutionary War. Marion County is part of the Salem, OR Metropolitan Statistical Area, which is also included in the Portland-Vancouver-Salem, OR-WA Combined Statistical Area. It is located in the Willamette Valley.
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Snow Totals in Marion County, Oregon
See recent snowfall, snow depth, and records for each city and town in Marion County, Oregon.
About this data
- State and county boundaries
- TIGER/Line Shapefiles: States, Counties and ZIP Code Tabulation Areas (2025), U.S. Census Bureau. Boundaries of states, counties and ZIP Code Tabulation Areas, the Census Bureau's areas for ZIP codes. Updated
- County subdivision boundaries
- TIGER/Line Shapefiles: County Subdivisions and Places (2024), U.S. Census Bureau. Boundaries of towns, townships, cities and villages. Updated
- County list
- Cartographic Boundary Files: Counties (2024), U.S. Census Bureau. County names and extents, with Wikipedia links from Wikidata. Updated