[2] Johnson County is part of the Dublin, Georgia, micropolitan statistical area.

[3] In 1919, a deputy driving Jim Waters, a black prisoner accused of rape, out of the county was stopped by a group of 150 men at a bridge over the Ohoopee River.

[6] As of the 2020 United States census, there were 9,189 people, 3,393 households, and 2,208 families residing in the county.

Walker went on to play for the University of Georgia and won the Heisman Trophy.

In 2004 Johnson County High School named its football field for Walker.