Thorndale is a city in Milam County, Texas, with a small part in Williamson County. The population was 1,336 at the 2010 census. It was founded in 1878 about 3 miles west of its present site, and moved to its current site in 1880.
Antonio Gómez, a Mexican-American teenager, was lynched on June 19, 1911, in Thorndale following his lethal stabbing of a German-American garage owner, Charles Zieschang. Concerns about prejudice and violence against Mexican-American youths, such as the Gómez hanging, inspired Jovita Idar to found the League of Mexican Women (La Liga Femenil Mexicanista).
Thorndale is located at 30°36′45″N 97°12′16″W (30.612549, -97.204523), about 40 miles northeast of Austin and 12 miles west of Rockdale. Most of the city lies in Milam County, with only a small portion in Williamson County.
According to the United States Census Bureau, the city has a total area of 1.0 square miles (2.5 km2), all land.
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Thorndale has a humid subtropical climate, abbreviated "Cfa" on climate maps.
As of the census of 2000, there were 1,278 people, 485 households, and 354 families residing in the city. The population density was 1,307.2 people per square mile (503.5/km2). There were 542 housing units at an average density of 554.4/sq mi (213.5/km2).