Milwaukee County Transit System
| Founded | June 1, 1975 (49 years ago) | 
|---|---|
| Headquarters | 1942 North 17th Street Milwaukee, Wisconsin | 
| Service area | Milwaukee, Ozaukee, and Waukesha counties | 
| Service type | |
| Routes | 42 | 
| Stops | 4,591 | 
| Stations | 2 | 
| Depots | Fond du Lac Operating Station Kinnickinnic Operating Station | 
| Fleet | 344 buses | 
| Daily ridership | 74,800 (weekdays, Q1 2025) | 
| Annual ridership | 25,575,600 (2024) | 
| Operator | Milwaukee Transport Services, Inc. | 
| Chief executive | Denise Wandke | 
| Website | www | 
The Milwaukee County Transit System (MCTS) is the largest transit agency in Wisconsin, and is the primary transit provider for Milwaukee County. It ranks among the top 50 transit agencies in the United States for total passenger trips. Milwaukee Transport Services, Inc. is a quasi-governmental agency responsible for the management and operation of the Milwaukee County Transit System. Its bus fleet consists of 360 buses. In 2024, the system had a ridership of 25,575,600, or about 74,800 per weekday as of the first quarter of 2025.