Founded in 1842, Lavaca County is one of 254 counties in the state of Texas. Historically, Lavaca County was formed from Colorado County, Fayette County, Gonzales County, Jackson County and Victoria County. Named La Buca County until 1846. The city of Hallettsville is the county seat. With FIPS code of 285, Lavaca County has a population of 20,544 and area of 970 square miles (2,512 km2).
List of all cities in Lavaca County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Breslau, TX | 77964 | 361 |
| Dreyer, TX | 77984 | 361 |
| Ezzell, TX | 77964 | 361 |
| Fordtran, TX | 77995 | 361 |
| Glaze City, TX | 77984 | 361 |
| Hallettsville, TX | 77964 | 361 |
| Henkhaus, TX | 77984 | 361 |
| Hope, TX | 77995 | 361 |
| Kinkler, TX | 77964 | 361 |
| Koerth, TX | 77964 | 361 |
| Moulton, TX | 77975 | 361 |
| Mount Olive, TX | 77984 | 361 |
| Novohrad, TX | 77975 | 361 |
| Old Moulton, TX | 77975 | 361 |
| Pearl City, TX | 77995 | 361 |
| Petersville, TX | 77995 | 361 |
| Rabbs, TX | 77964 | 361 |
| Shiner, TX | 77984 | 361 |
| Speaks, TX | 77964 | 361 |
| Sublime, TX | 77986 | 361 |
| Sweet Home, TX | 77987 | 361 |
| Terryville, TX | 77995 | 361 |
| Vienna, TX | 77964 | 361 |
| Wied, TX | 77964 | 361 |
| Witting, TX | 77975 | 361 |
| Worthing, TX | 77964 | 361 |
| Yoakum, TX | 77995 | 361 |