Liberty County traces its roots to a Spanish colonial settlement from the 1750s

Spanish missionaries and soldiers first came to this area in the 1750s. After Mexico gained independence, American settlers moved in. In 1831, the area was organized as a municipality called Villa de la Santísima Trinidad de la Libertad — later shortened to Liberty. When Texas became a republic, Liberty became the county seat. It was incorporated in 1837.

The local economy changed a lot over the years. It started with cotton and sugarcane. Then came cattle ranching. Later, timber, rice, and oil became the main industries. The Trinity River tied it all together. It gave water, but it also flooded farmland and shaped how people lived. Today, Liberty is still the county seat. The Handbook of Texas and the Texas Almanac both have full historical accounts of the county.