Weimar is located on U.S. Highway 90 and Interstate Highway 10, 87 miles west of Houston in western Colorado County. It is a small community of predominantly Czech and German descendants. Weimar was founded in 1873 in anticipation that the Galveston, Harrisburg, and San Antonio Railway was going to build through the site. The community was first called Jackson, after D. W. Jackson, a native Georgian and area landowner who donated land for the railroad right-of-way and the town site. However, the townspeople chose the name Weimar; an early record states that Thomas W. Peirce, who authorized Jackson to sell lots at the site, had visited Weimar, Germany, and was impressed with the area. 

The Weimar post office was established in 1873 and the town was incorporated in 1875. After beginning with a few hundred residents, Weimar reached a population of more than 1,000 by its 10th birthday. As it grew, Weimar established itself as a center of trade for pecans, poultry, and dairy products. By 1877 the town was large enough to make its first city map. 20th century Weimar saw slow, yet steady growth in the population, increasing on an average by 250 people every 10 years.

Local industries include meat processing, tooling and sheet-metal works, and manufacturing. Agriculture continues to play an important role in the community. The former GH&SA railroad remains in service as part of the Southern Pacific system.