18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Elgin | 1 | 505 | 540 | -1.37% | 614 | 0.82 | City |
| Carson | 2 | 232 | 251 | -1.69% | 58 | 3.99 | City |
| New Leipzig | 3 | 201 | 216 | -1.47% | 226 | 0.89 | City |
| Elgin township | 4 | 177 | 187 | -0.56% | 5 | 34.29 | Township |
| Minnie township | 5 | 55 | 59 | -1.79% | 2 | 34.92 | Township |
| Elm township | 6 | 52 | 54 | -1.89% | 1 | 34.73 | Township |
| Lark township | 7 | 51 | 47 | 4.08% | 1 | 36.03 | Township |
| Leipzig township | 8 | 47 | 49 | 0% | 1 | 35.98 | Township |
| Raleigh township | 9 | 35 | 35 | 0% | 1 | 35.99 | Township |
| Leith | 10 | 25 | 27 | 0% | 20 | 1.24 | City |
| Winona township | 11 | 21 | 22 | 0% | 1 | 40.33 | Township |
| Freda township | 12 | 20 | 15 | 11.11% | 1 | 35.94 | Township |
| Rock township | 13 | 18 | 19 | 0% | 1 | 35.58 | Township |
| Pretty Rock township | 14 | 14 | 15 | 0% | 0.00 | 35.82 | Township |
| Raleigh | 15 | 13 | 13 | 8.33% | 45 | 0.29 | CDP |
| Fisher township | 16 | 7 | 10 | -12.5% | 0.00 | 32.94 | Township |
| Howe township | 17 | 7 | 7 | 0% | 0.00 | 31.63 | Township |
| Heil | 18 | 5 | 9 | 0% | 25 | 0.20 | CDP |
Elgin is the largest city in Grant County, with a population of 505.
Heil is the smallest city in Grant County.
There are 18 cities in Grant County, North Dakota.