As of 2016[update], there are 31 PTBAs that cover most of Washington's counties and large cities, with the exception of Seattle.
Within Washington state, there are 31 systems that cover all or parts of 23 counties and serve 132 cities.
[3] PTBAs are governed by a board of directors of not more than nine elected officials, supplemented by a union representative.
[1] On July 1, 1975, Governor Daniel J. Evans signed Engrossed Substitute Senate Bill No.
[8] The bill had been proposed by the Snohomish County Transportation Authority (SNO-TRAN), who would later use the legislation to establish the state's first PTBA, the Snohomish County Public Transportation Benefit Area Corporation, later renamed Community Transit, in November 1975.