7 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Littlefield | 1 | 5,651 | 5,943 | -1.02% | 899 | 6.28 | City |
| Olton | 2 | 1,890 | 1,980 | -0.94% | 1,391 | 1.36 | City |
| Sudan | 3 | 925 | 945 | -0.43% | 904 | 1.02 | City |
| Earth | 4 | 896 | 898 | 0% | 746 | 1.20 | City |
| Amherst | 5 | 645 | 670 | -0.77% | 705 | 0.92 | City |
| Springlake | 6 | 139 | 143 | -0.71% | 135 | 1.03 | Town |
| Spade | 7 | 49 | 61 | 6.52% | 26 | 1.87 | CDP |
Littlefield is the largest city in Lamb County, with a population of 5,651.
Spade is the smallest city in Lamb County.
There are 7 cities in Lamb County, Texas.