[3] The county was organized February 14, 1845, and named for the Moniteau Creek.

Moniteau County is part of the Jefferson City, MO Metropolitan Statistical Area.

[4] As of the census[11] of 2000, there were 14,827 people, 5,259 households, and 3,728 families residing in the county.

25.60% of all households were made up of individuals, and 13.00% had someone living alone who was 65 years of age or older.

The Republican Party predominantly controls politics at the local level in Moniteau County.

The county leans heavily Republican in presidential elections and has not voted for a Democratic candidate since 1948 - when Harry S. Truman (a Missouri native) was elected to a term in his own right.