Results of the 2018 United States House of Representatives elections in Washington by district:[1] Suzan DelBene Democratic Suzan DelBene Democratic The 1st congressional district is located along the Puget Sound from the Canada–US border to King County.

Rick Larsen Democratic Rick Larsen Democratic The 2nd congressional district includes all of Island and San Juan counties and neighboring areas on the mainland from Bellingham in the north to Lynnwood in the south.

Dan Newhouse Republican Dan Newhouse Republican The 4th congressional district is located in central Washington, covering the counties of, Douglas, Okanogan, Grant, Yakima, Franklin, Benton, and Adams.

Cathy McMorris Rodgers Republican Cathy McMorris Rodgers Republican The 5th congressional district is located in Eastern Washington and includes the counties of Ferry, Stevens, Pend Oreille, Lincoln, Spokane, Whitman, Walla Walla, Columbia, Garfield, and Asotin.

Pramila Jayapal Democratic Pramila Jayapal Democratic The 7th congressional district includes most of Seattle, all of Vashon Island, Edmonds, Shoreline, Kenmore, and parts of Burien and Normandy Park.

Dave Reichert Republican Kim Schrier Democratic The 8th congressional district includes the eastern portions of King and Pierce counties and crosses the Cascade mountains to include Chelan and Kittitas counties.

The population centers on the west side of the mountains include the exurban communities of Sammamish, Issaquah, and Auburn.

On the east side, the 8th's population centers are rural communities Wenatchee, Leavenworth, and Ellensburg.

Dino Rossi vs. generic Democrat Dino Rossi vs. Jason Rittereiser Dino Rossi vs. Shannon Hader Adam Smith Democratic Adam Smith Democratic The 9th congressional district encompasses a long, somewhat narrow area in western Washington through the densely populated central Puget Sound region, from Tacoma in the south to Bellevue in the north.

Incumbent Adam Smith won the general election soundly, receiving 68% of the vote.