CITY · OR

What county is Eugene, OR in?

Eugene, OR is mostly in Lane County. County FIPS code 41039, population 381,181 (2023 estimate).

County details

City: Eugene, Oregon
Primary county: Lane County
FIPS code: 41039
County population: 381,181

Some cities extend into more than one county. Eugene is placed in the county that contains its center. For a specific address, use the address lookup.

Questions

What county is Eugene in?

Eugene, OR is mostly in Lane County.

What is the county seat of Lane County?

County seats are not part of the data on this site. Check the county’s official website.

Can a city be in two counties?

Yes. Large cities such as Houston and Atlanta cross county lines. The address lookup shows the exact county for any street address.

Sources: U.S. Census Bureau geographic reference files; FCC Area API; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.