Osage County, Missouri

Osage County
The Osage County Courthouse in Linn
Location within the U.S. state of Missouri
Missouri's location within the U.S.
Coordinates: 38°28′N 91°52′W / 38.46°N 91.86°W / 38.46; -91.86
Country United States
State Missouri
FoundedJanuary 29, 1841
Named afterOsage River
SeatLinn
Largest cityLinn
Area
  Total
611 sq mi (1,580 km2)
  Land604 sq mi (1,560 km2)
  Water6.1 sq mi (16 km2)  1.0%
Population
 (2020)
  Total
13,274
  Density22/sq mi (8.4/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district3rd
Websiteosagecountygov.com

Osage County is a county in the central part of the U.S. state of Missouri. As of the 2020 census, the population was 13,274. Its county seat is Linn. The county was organized January 29, 1841, and named from the Osage River.

Osage County is part of the Jefferson City, MO Metropolitan Statistical Area. Its geography and the founding of Westphalia Vineyards links it to the Missouri Rhineland, extending along the Missouri River valley to the western edges of the St. Louis Metropolitan Area.

According to data from the 2010 census, Osage County is the whitest county in Missouri, with 98.85 percent of residents being white.