Lockhart was the site of a victory of the Texans over the Comanche, at the Battle of Plum Creek in 1840.

Rowe and Hejduk see Lockhart as a "curiously eloquent" example of a Victorian post-frontier American town.

Lockhart has played host to many film sets, as this quaint, small town is located just 30 miles (48 km) south of Austin.

The 1996 Christopher Guest comedy film Waiting for Guffman and the 1993 drama What's Eating Gilbert Grape[7] were filmed partly in Lockhart, including the historic courthouse and the town square.

On July 30, 2016, a hot air balloon struck a power line and caught on fire, killing all 16 people on board when it crashed near the unincorporated community of Maxwell.

[8] Lockhart is located near central Texas, 30 miles (48 km) south of downtown Austin on U.S. Highway 183.

According to the United States Census Bureau, the city has a total area of 15.6 square miles (40.4 km2), of which 0.04 sq mi (0.1 km2), or 0.14%, is covered by water.

[5] Climate is characterized by relatively high temperatures and evenly distributed precipitation throughout the year.

[9] As of the 2020 United States census, there were 14,379 people, 4,503 households, and 2,944 families residing in the city.