La Grange is a city in Fayette County, Texas, United States, near the Colorado River. La Grange is in the center of the Texas-German belt. The population was 4,391 at the 2020 census, and in 2018 the estimated population was 4,632. La Grange is the county seat of Fayette County.

The Chicken Ranch was an illegal brothel in the U.S. state of Texas that operated from 1905 until 1973 in Fayette County, about 2.5 miles (4.0 km) east of downtown La Grange. The business was notably dramatized in the 1978 Broadway musical The Best Little Whorehouse in Texas, adapted into a 1982 film of the same name.