Maria Cantwell (D-1st district)
21905 64th Ave. West
Mountlake Terrace WA 98043
(206) 640-0233
fax (206) 776-7168

Al Swift (D - 2nd district)
201 Federal Bldg.
3002 Colby
Everett WA 98201-4079
(206) 252-3188
fax (206) 252-3180

Jolene Unsoeld (D - 3rd district)
1110 Capitol Way, South #404
Olympia WA 98504
(206) 753-9528
wouldn't give me the fax number

Jay Inslee (D - 4th district)
701 First Street, Suite B
Yakima WA 98901-2295
(509) 452-3243
fax (509) 452-3438

Tom Foley (D - 5th district)
I think I already gave you his stuff

Norm Dicks (D - 6th district)
Washington Bldg.
1019 Pacific Ave #916
Tacoma WA 98402-4411
(206) 593-6536
fax (206) 593-6551

Jim McDermott (D - 7th district)
1212 Tower Bldg.
1809 7th Ave
Seattle WA 98101-1399
(206) 553-7170
fax (206) 553-7175

Jennifer Dunn (R - 8th district)
50 116th Ave SE #201
Bellevue WA 98004
(206) 450-0161
fax (206) 454-0821

Mike Kreidler (D - 9th district)
31919 First Ave SW
Federal Way WA 98003
no numbers; the one listed had been disconnected

And I also got in-state address for Senator Murray;

Patty Murray (D-WA)
W 601 First Ave #506
Spokane WA 99204
(509) 624-9515
fax (509) 624-9561