| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Yoakum | 1 | 5,892 | 5,916 | -0.14% | 1,286 | 5 | City |
| Hallettsville | 2 | 2,733 | 2,731 | -0.11% | 999 | 3 | City |
| Shiner | 3 | 2,173 | 2,126 | 0.37% | 880 | 2 | City |
| Moulton | 4 | 844 | 856 | -0.35% | 1,011 | 1 | Town |
Yoakum is the largest city in Lavaca County, with a population of 5,892.
Moulton is the smallest city in Lavaca County, with a population of 844.
There are 4 cities in Lavaca County, Texas.