| Transit agency | City | Vehicles operated directly | Website |
|---|---|---|---|
| City of Rapid City | Rapid City | 18 | Official site |
| City of Aberdeen | Aberdeen | 15 | Official site |
| Rosebud Sioux Tribe | Rosebud | 13 | — |
| City of Mitchell | Mitchell | 12 | Official site |
| Oglala Sioux Tribe | Pine Ridge | 7 | — |
| Yankton Sioux Tribe | Wagner | 5 | Official site |
| Lower Brule Sioux Tribe | Lower Brule | 4 | Official site |
| City of Brandon | Brandon | 2 | Official site |
| Cheyenne River Sioux Tribe | Eagle Butte | 0 | Official site |
| City of Sioux Falls | Sioux Falls | 0 | Official site |
| Sisseton-Wahpeton Oyate | Agency Village | 0 | Official site |
Largest first by vehicles operated directly, as each employer reports it to its federal registry.
Source: Federal Transit Administration, National Transit Database 2024 — Reporter Agency Information. Data captured September 30, 2026.