9 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sioux Falls | 1 | 217,209 | 193,448 | 1.86% | 2,569 | 85 | City |
| Harrisburg | 2 | 11,881 | 6,847 | 7.6% | 2,491 | 5 | City |
| Tea | 3 | 8,709 | 5,678 | 6.16% | 2,300 | 4 | City |
| Canton | 4 | 2,923 | 3,075 | -0.85% | 894 | 3 | City |
| Lennox | 5 | 2,596 | 2,425 | 1.13% | 1,487 | 2 | City |
| Worthing | 6 | 905 | 932 | -0.44% | 1,613 | 1 | City |
| Hudson | 7 | 331 | 313 | 0.91% | 1,174 | 0 | Town |
| Fairview | 8 | 67 | 64 | 1.52% | 788 | 0 | Town |
| Ward | 9 | 46 | 33 | 4.55% | 158 | 0 | Town |
Sioux Falls is the largest city in Lincoln County, with a population of 217,209.
Ward is the smallest city in Lincoln County, with a population of 46.
There are 9 cities in Lincoln County, South Dakota.