Thompson's Islands

William A. Thompson brought his family and slaves to Texas from Louisiana in 1850. They established plantations in Caldwell and Hays counties. With slave labor, the family built a mill on the San Marcos River near this site. Construction and operation of the mill resulted in the creation of three land masses in the river channel which became known as Thompson's Islands. The land remained in the family for generations, and the mill, which provided power for local lumber operations and a cotton gin, became an important element in the area's economy.

Thompson's Islands is a historical marker in San Marcos, Hays County, dedicated in 1993. It is one of 124 historical markers documented in Hays County in the Texas Historical Commission Atlas, among 184 historic sites cataloged across the county.

The site sits at 29.8691, -97.9315 near San Marcos. The nearest cataloged historic site is Southside School (historical marker), about 0.6 miles away. Others within a short drive include San Marcos Milling Company, Farmers Union Gin Company, and Wesley Chapel A. M. E. Church.

This record corresponds to Texas Historical Commission Atlas #5209010331. Use the map below for its exact position and turn-by-turn directions.