Linn is a city in Osage County, Missouri, United States.

[6] Linn is part of the Jefferson City, Missouri Metropolitan Statistical Area.

[9] The Osage County Poorhouse and Dr. Enoch T. and Amy Zewicki House are listed on the National Register of Historic Places.

[10] Linn was formally part of neighboring Gasconade County until January 29, 1841.

[11] According to the United States Census Bureau, the city has a total area of 1.17 square miles (3.03 km2), all land.

There were 758 housing units at an average density of 647.9 per square mile (250.2/km2).

38.2% of all households were made up of individuals, and 12.2% had someone living alone who was 65 years of age or older.

34.3% of all households were made up of individuals, and 17.6% had someone living alone who was 65 years of age or older.

Linn is also home to the Osage County R-II School District.