11 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Harrison | 1 | 14,048 | 13,073 | 1.17% | 1,263 | 11 | City |
| Diamond City | 2 | 876 | 756 | 2.34% | 311 | 3 | City |
| Bergman | 3 | 431 | 421 | 0.47% | 330 | 1 | Town |
| Bellefonte | 4 | 423 | 416 | 0.24% | 680 | 1 | Town |
| Alpena | 5 | 395 | 379 | 0.77% | 296 | 1 | Town |
| Lead Hill | 6 | 283 | 276 | 0.35% | 490 | 1 | Town |
| Valley Springs | 7 | 183 | 179 | 0.55% | 356 | 1 | Town |
| Omaha | 8 | 132 | 129 | 0.76% | 338 | 0 | Town |
| Everton | 9 | 107 | 101 | 0.94% | 226 | 0 | Town |
| Zinc | 10 | 91 | 87 | 1.11% | 121 | 1 | Town |
| South Lead Hill | 11 | 87 | 84 | 1.16% | 530 | 0 | Town |
Harrison is the largest city in Boone County, with a population of 14,048.
South Lead Hill is the smallest city in Boone County, with a population of 87.
There are 11 cities in Boone County, Arkansas.