Walnut Grove is a town located in the U.S. state of Georgia. It is within Walton County. It has a total area of 1.5 square miles at 33°44′44″N 83°51′26″W. The elevation is 922 feet above sea level. As of the 2010 census data, it had a total population of 1,330. The population density was 824/sq mi. Estimated per capita income in 2016 was $23,866. It has Zip code 30052.