4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Elgin | 1 | 515 | 541 | -0.77% | 626 | 1 | City |
| Carson | 2 | 241 | 252 | -0.82% | 60 | 4 | City |
| New Leipzig | 3 | 203 | 212 | -0.49% | 228 | 1 | City |
| Leith | 4 | 24 | 26 | 0% | 19 | 1 | City |
Elgin is the largest city in Grant County, with a population of 515.
Leith is the smallest city in Grant County, with a population of 24.
There are 4 cities in Grant County, North Dakota.