United States congressional delegations from Washington

These are tables of congressional delegations from the state of Washington to the United States Senate and United States House of Representatives.

The current dean of the Washington delegation is Senator Patty Murray, having served in the Senate since 1993.

Current members
This is a list of members of the current Washington delegation in the U.S. House, along with their respective tenures in office, district boundaries, and district political ratings according to the CPVI. The delegation has a total of 10 members, including 8 Democrats and 2 Republicans.

1889–1913
From 1889 to 1909, members were elected at-large statewide.