[2] Scott County is part of the Jacksonville, IL Micropolitan Statistical Area, which is also included in the Springfield-Jacksonville-Lincoln, IL Combined Statistical Area.

[3] The county's western boundary is formed by the Illinois River.

[4] As of the 2010 census, there were 5,355 people, 2,214 households, and 1,516 families living in the county.

[11] In terms of ancestry, 26.3% were German, 24.3% were American, 18.0% were English, and 16.2% were Irish.

[13] The population ranking of the following table is based on the 2020 census of Scott County.