The Alameda-Contra Costa Transit District is the largest public bus system in California, serving 13 cities and adjacent unincorporated areas in Alameda and Contra Costa counties. AC Transit has been serving the East Bay since 1960, taking over from the Key System and its predecessors, which carried passengers via buses, horse-drawn rail, electric streetcars, and ferries over the previous 100 years. AC Transit’s mission is to provide safe, convenient, courteous, and reliable transit service.
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The AC Transit annual revenue was $605.8 million in 2026.
Aaron Vogel is the COO of AC Transit.
623 people are employed at AC Transit.
AC Transit is based in Oakland, California.
The NAICS codes for AC Transit are [48, 485].
The SIC codes for AC Transit are [47, 478].