Byron is a city located primarily in Peach County, Georgia, United States. A small portion of the city also extends into parts of Houston and Crawford counties. The population was estimated to be 5,149 in 2019 by the Census Bureau, an increasing of 14.1% from 4,512 at the 2010 census. The city is in the Warner Robins metropolitan statistical area. Byron was home to the Middle Georgia Raceway, an auto racetrack that hosted NASCAR races and the filming of TV commercials and a feature movie.