Intercity Transit (IT) is the largest public transit agency in Thurston County. As of September 2019, the agency operates 17 fixed bus routes throughout the urban areas of Lacey, Olympia, Tumwater and Yelm. IT also operates two express routes to Pierce County. In addition, the agency offers a robust vanpool program, door to door Dial-A-Lift services for people with disabilities, and a mix of educational programs.
Ridership peaked in 2012 at 5.45 million boardings. In 2018, IT's ridership dropped to 4.5 million boardings, decreasing for the fourth consecutive year. Dial-A-Lift, which makes up less than 5% of IT's ridership, continues to increase, peaking in 2018 at 187,000 boardings.