1 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Elvira | 1 | 37 | 44 | -5.13% | 1 | 48 | Township |
Elvira is the largest city in Buffalo County, with a population of 37.
Elvira is the smallest city in Buffalo County, with a population of 37.
There is 1 city in Buffalo County, South Dakota.