Lavaca County, Texas

Lavaca County
The Lavaca County Courthouse in Hallettsville
Location within the U.S. state of Texas
Texas's location within the U.S.
Coordinates: 29°23′N 96°56′W / 29.38°N 96.94°W / 29.38; -96.94
Country United States
State Texas
Founded1846
Named afterLavaca River
SeatHallettsville
Largest cityYoakum
Area
  Total
970 sq mi (2,500 km2)
  Land970 sq mi (2,500 km2)
  Water0.7 sq mi (2 km2)  0.08%
Population
 (2020)
  Total
20,337
  Density21/sq mi (8.1/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district27th
Websitewww.co.lavaca.tx.us

Lavaca County (/ləˈvɑːkə/ lə-VAH-kə) is a county located in the U.S. state of Texas. As of the 2020 census, its population was 20,337. Its county seat is Hallettsville. The county was created in 1846. It is named for the Lavaca River, which curves its way southeast through Moulton and Hallettsville before reaching the coast at Matagorda Bay.