Avera is a city in Jefferson County, Georgia, United States. As of the 2020 census, the city had a population of 223. The city was incorporated i…Avera is a city in Jefferson County, Georgia, United States. As of the 2020 census, the city had a population of 223. The city was incorporated in 1900. Avera is located at 33°11′42″N 82°31′39″W / 33.19500°N 82.52750°W. According to the United States Census Bureau, the city has a total area of 0.6 square miles, all land.