11 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Harrison | 1 | 13,885 | 13,073 | 1.18% | 1,248 | 11 | City |
| Diamond City | 2 | 856 | 756 | 2.39% | 304 | 3 | City |
| Bergman | 3 | 429 | 421 | 0.23% | 329 | 1 | Town |
| Bellefonte | 4 | 422 | 416 | 0.24% | 678 | 1 | Town |
| Alpena | 5 | 392 | 379 | 0.51% | 294 | 1 | Town |
| Lead Hill | 6 | 282 | 276 | 0.36% | 488 | 1 | Town |
| Valley Springs | 7 | 182 | 179 | 0% | 354 | 1 | Town |
| Omaha | 8 | 131 | 129 | 0% | 336 | 0 | Town |
| Everton | 9 | 106 | 101 | 0.95% | 224 | 0 | Town |
| Zinc | 10 | 90 | 87 | 0% | 120 | 1 | Town |
| South Lead Hill | 11 | 86 | 84 | 0% | 524 | 0 | Town |
Harrison is the largest city in Boone County, with a population of 13,885.
South Lead Hill is the smallest city in Boone County, with a population of 86.
There are 11 cities in Boone County, Arkansas.