| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Littlefield | 1 | 5,618 | 5,925 | -1% | 894 | 6 | City |
| Olton | 2 | 1,898 | 1,977 | -0.78% | 1,397 | 1 | City |
| Sudan | 3 | 929 | 943 | -0.32% | 908 | 1 | City |
| Earth | 4 | 891 | 900 | -0.22% | 742 | 1 | City |
| Amherst | 5 | 634 | 665 | -0.94% | 693 | 1 | City |
| Springlake | 6 | 136 | 143 | -1.45% | 132 | 1 | Town |
Littlefield is the largest city in Lamb County, with a population of 5,618.
Springlake is the smallest city in Lamb County, with a population of 136.
There are 6 cities in Lamb County, Texas.