Chattanooga Valley is an unincorporated community and census-designated place (CDP) in Walker County, Georgia, United States.

[5] According to the United States Census Bureau, the CDP has a total area of 7.5 square miles (19 km2), all land.

Chattanooga Valley first appeared as a census designated place in the 1990 U.S.

There were 1,698 housing units at an average density of 225.3 per square mile (87.0/km2).

20.4% of all households were made up of individuals, and 9.3% had someone living alone who was 65 years of age or older.