18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Rogers | 1 | 76,958 | 70,360 | 1.74% | 2,004 | 38 | City |
| Bentonville | 2 | 63,534 | 54,819 | 2.82% | 1,793 | 35 | City |
| Bella Vista | 3 | 34,038 | 30,217 | 2.3% | 751 | 45 | City |
| Centerton | 4 | 27,619 | 18,249 | 7.28% | 1,935 | 14 | City |
| Siloam Springs | 5 | 20,713 | 17,521 | 3.18% | 1,684 | 12 | City |
| Lowell | 6 | 11,973 | 9,947 | 3.5% | 1,242 | 10 | City |
| Pea Ridge | 7 | 11,069 | 6,672 | 8.63% | 1,320 | 8 | City |
| Cave Springs | 8 | 6,477 | 5,611 | 2.74% | 758 | 9 | City |
| Gentry | 9 | 4,877 | 3,850 | 4.39% | 816 | 6 | City |
| Gravette | 10 | 3,890 | 3,569 | 1.67% | 254 | 15 | City |
| Highfill | 11 | 3,075 | 1,662 | 10.1% | 164 | 19 | Town |
| Little Flock | 12 | 3,035 | 3,058 | -0.16% | 404 | 8 | City |
| Decatur | 13 | 1,706 | 1,790 | -0.99% | 359 | 5 | City |
| Garfield | 14 | 627 | 602 | 0.8% | 203 | 3 | Town |
| Avoca | 15 | 504 | 488 | 0.6% | 261 | 2 | Town |
| Sulphur Springs | 16 | 473 | 482 | -0.42% | 468 | 1 | City |
| Gateway | 17 | 455 | 437 | 0.66% | 69 | 7 | Town |
| Springtown | 18 | 90 | 83 | 1.12% | 166 | 1 | Town |
Rogers is the largest city in Benton County, with a population of 76,958.
Springtown is the smallest city in Benton County, with a population of 90.
There are 18 cities in Benton County, Arkansas.