Sangamon Mass Transit District
| Founded | 1968 |
|---|---|
| Headquarters | 928 South Ninth Street |
| Locale | Springfield, Illinois |
| Service type | bus service, paratransit |
| Routes | 18 regular day routes 9 night routes 9 supplemental routes |
| Fleet | 57 buses 22 paratransit vans |
| Daily ridership | 5,200 (weekdays, Q4 2025) |
| Annual ridership | 1,426,600 (2025) |
| Fuel type | Compressed natural gas Diesel |
| Website | smtd |
The Sangamon Mass Transit District (SMTD) is a regional mass transit district that mostly serves Springfield, Illinois, along with a few neighboring communities. It is governed by a seven-member board of trustees, who are all appointed by the Sangamon County Board of Supervisors. In 2025, the system had a ridership of 1,426,600, or about 5,200 per weekday as of the fourth quarter of 2025.