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Osage County is a county located in the central portion of the state of Missouri. Based on the 2010 census, the population was 13,878.
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.
Named for the Osage River. The name Osage is generally believed to be a corruption by the French of Washazhe, the name of the Osage Indians. The name has also been given as Wawsashe, Wacase, and Wassashsha. Marquette spelled the named Ouchage and Autrechacha. The name, to the Indians, meant "people."
County QuickFacts: CensusBureau Quick Facts
Organized from Gasconade County by act of legislature January 29, 1841. It originally included part of Maries County. On the north is the Missouri River; on the south, Maries County; on the west, the Osage River and Miller County; on the east is Gasconade County. The county was named for the Osage River (q.v.), which forms most of its western boundary. (HIST. COLE etc., 593, 694)
Source: Weber, Frank. "Place Names Of Six South Central Counties of Missouri." M.A. thesis., University of Missouri-Columbia, 1938.
As reported by the Census Bureau, the county has a total area of 610 square miles (1,600 km2), of which 604 square miles (1,560 km2) is land and 6.1 square miles (16 km2) (1.0%) is water
Bordering counties are as follows:
Osage County R-I School District - Chamois
Osage County R-II School District - Linn
Osage County R-III School District - Westphalia
St. Joseph Catholic School - Westphalia (K-09) - Roman Catholic
Immaculate Conception School - Loose Creek (K-09) - Roman Catholic
St. George School - Linn (K-09) - Roman Catholic
Sacred Heart School - Rich Fountain (K-09) - Roman Catholic
Holy Family School - Freeburg (K-09) - Roman Catholic
St. Mary' School - Bonnots Mill (K-09) - Roman Catholic
Linn State Technical College - Linn