8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Eldon | 1 | 4,788 | 4,416 | 1.57% | 1,347 | 4 | City |
| Iberia | 2 | 724 | 708 | 0.42% | 822 | 1 | City |
| St. Elizabeth | 3 | 428 | 418 | 0.47% | 411 | 1 | Village |
| Aurora Springs | 4 | 248 | 155 | 7.36% | 577 | 0 | CDP |
| Tuscumbia | 5 | 191 | 188 | 0% | 554 | 0 | Town |
| Olean | 6 | 121 | 118 | 0% | 699 | 0 | Town |
| Brumley | 7 | 75 | 73 | 0% | 136 | 1 | Town |
| Bagnell | 8 | 44 | 43 | 0% | 94 | 0 | Town |
Eldon is the largest city in Miller County, with a population of 4,788.
Bagnell is the smallest city in Miller County, with a population of 44.
There are 8 cities in Miller County, Missouri.