
Lavaca County
- State:
- Texas
- County Seat:
- Hallettsville
Lavaca County's estimated 2025 population is 20,407 with a growth rate of -0.4% in the past year according to the most recent United States census data. Lavaca County is the 120th largest county in Texas. The 2010 population was 19,266 and has seen a growth of 5.92% since that time.