[3] The constitutional amendment to create the county was proposed August 14, 1912, and ratified November 5, 1912.

[4] The eastern portion of Wheeler County, defined by a line running from north of Alamo to the southern border of the county, due south of Mount Vernon, is located in the Lower Oconee River sub-basin of the Altamaha River basin.

[5] At the 2000 census there were 6,179 people, 2,011 households, and 1,395 families living in the county.

There were 2,447 housing units at an average density of 8 per square mile (3/km2).

At the 2010 census, there were 7,421 people, 2,152 households, and 1,519 families living in the county.

There were 2,625 housing units at an average density of 8.9 per square mile (3.4/km2).

As of the 2020 United States census, there were 7,471 people, 1,862 households, and 1,159 families residing in the county.