6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Littlefield | 1 | 5,645 | 5,930 | -0.83% | 898 | 6 | City |
| Olton | 2 | 1,910 | 1,979 | -0.57% | 1,405 | 1 | City |
| Sudan | 3 | 933 | 945 | -0.21% | 912 | 1 | City |
| Earth | 4 | 897 | 902 | -0.11% | 747 | 1 | City |
| Amherst | 5 | 628 | 667 | -0.95% | 686 | 1 | City |
| Springlake | 6 | 140 | 143 | 0% | 136 | 1 | Town |
Littlefield is the largest city in Lamb County, with a population of 5,645.
Springlake is the smallest city in Lamb County, with a population of 140.
There are 6 cities in Lamb County, Texas.