[3] Cannon County is part of the Nashville–Davidson–Murfreesboro–Franklin, TN Metropolitan Statistical Area.

Cannon County was established by the Tennessee state legislature on January 31, 1836.

It was formed from portions of Rutherford, Smith, Wilson, and Warren counties[4][5] and was named for Governor Newton Cannon.

This was part of the Middle Tennessee region, with mixed farming and livestock raising, including of thoroughbred horses.

[6] As of the 2020 United States census, there were 14,506 people, 5,488 households, and 3,903 families residing in the county.

24.30% of all households were made up of individuals, and 10.90% had someone living alone who was 65 years of age or older.

Commissioners are elected to four-year terms by a simple majority of the residents in their district.

With the exception of the tax assessor, the terms of most of the officials above will end on September 1, 2022.