Plains is a city in Sumter County, Georgia, United States. The population was 573 at the 2020 census and it is a part of the Americus Micropolitan Statistical Area. It is best known as the birthplace of Jimmy Carter and his wife Rosalynn, who were the president and first lady of the United States respectively from 1977 to 1981. They lived in Plains both before and after their time in the White House.

Sumter County is a county located in the west-central portion of the U.S. state of Georgia. As of the 2020 census, its population was 29,616. The county seat is Americus. The county was created on December 26, 1831.