12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Harrison | 1 | 13,634 | 13,071 | 0.84% | 1,226 | 11.13 | City |
| Diamond City | 2 | 866 | 755 | 2.61% | 307 | 2.82 | City |
| Batavia | 3 | 500 | 463 | 7.07% | 360 | 1.39 | CDP |
| Bergman | 4 | 448 | 428 | 0.9% | 343 | 1.30 | Town |
| Bellefonte | 5 | 433 | 415 | 0.93% | 696 | 0.62 | Town |
| Alpena | 6 | 393 | 372 | 1.03% | 295 | 1.33 | Town |
| Lead Hill | 7 | 288 | 277 | 0.7% | 498 | 0.58 | Town |
| Valley Springs | 8 | 195 | 182 | 1.56% | 379 | 0.51 | Town |
| Omaha | 9 | 130 | 125 | 0.78% | 333 | 0.39 | Town |
| Everton | 10 | 106 | 101 | 0.95% | 224 | 0.47 | Town |
| Zinc | 11 | 102 | 94 | 2% | 136 | 0.75 | Town |
| South Lead Hill | 12 | 87 | 84 | 1.16% | 530 | 0.16 | Town |
Harrison is the largest city in Boone County, with a population of 13,634.
South Lead Hill is the smallest city in Boone County.
There are 12 cities in Boone County, Arkansas.