Lavaca County ( ) 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.
Geography
According to the U.S. Census Bureau, the county has a total area of , of which (0.08%) is covered by water.
Major highways
- 20px U.S. Highway 77
- 20px<br>20px U.S. Highway 77 Alternate
- 20px<br>20px U.S. Highway 90 Alternate
- 20px State Highway 95
- 20px State Highway 111
Adjacent counties
- Fayette County (north)
- Colorado County (northeast)
- Jackson County (southeast)
- Victoria County (south)
- DeWitt County (southwest)
- Gonzales County (northwest)