It took some digging, but here is an attempt at a current list of all cideries in Washington state and a bit of info on each.  We sure have quite the cider region here!  I found quite a few I hadn’t heard of (some are very small, such as one cider variety at a winery).  Looks like I have plenty of new ciders to try!  Let me know if I missed any or there is any mis-information.

Alpenfire Cider (Port Townsend) – Organic, numerous varieties, tasting room
Attila Hard Apple Cider (Ellensberg) – two varieties
Chelan Gold / Lake Chelan Hard Cider (Lake Chelan) – one variety
Cockrell Hard Ciders (Puyallup) – three varieties
Core Hero Hard Cider (Edmonds) – two varieties
Country Elegance at Hard Cider Shed (Cashmere) – four varieties, tasting room
D’s Wicked Cider (Kennewick) – two varieties
Dragon’s Head Cider (Vashon Island) – four varieties, tasting room
Eaglemount Wine & Cider (Port Townsend) – numerous varieties, mead & wine too, tasting room, online store
Elemental Hard Cider (Woodinville) – four varieties, tasting room
Finnriver Farm & Cidery (Chimacum) – numerous varieties, fruit wines & farm venue too, tasting room, online store
Grizzly Ciderworks (Woodinville) – four varieties, tasting room
Honey Moon Mead & Cider (Bellingham) – one variety (CiderHead), tasting room
Irvine’s Vintage Cider at Vashon Winery (Vashon Island) – one variety, tasting room, online store
Jester & Judge Cider Co. (Stevenson) – three varieties
Liberty Ciderworks (Spokane) – numerous varieties, tasting room
Locust Cider (Woodinville) – four varieties, tasting room
Methow Valley Ciderhouse (Winthrop) – four varieties, tasting room
Nashi Orchards (Vashon Island) – numerous varieties, tasting room
Neigel Vintners (NV) Cider (East Wenatchee) – five varieties
Number 6 Cider (Seattle) – numerousvarieties, tasting room
One Tree Hard Cider (Spokane) – five varieties
Orondo Ciderworks (Orando) – three varieties, tasting room
Rockridge Orchard & Cidery (Enumclaw) – numerous varieties, tasting room (including other ciders)
Schilling Cider Co. (Seattle) – numerous varieties, tasting room (including other ciders)
Seattle Cider Co. (Seattle) – numerous varieties, tasting room
Sixknot Cider (Twisp) – numerous varieties
Snowdrift Cider Co. (East Wenatchee) – numerous varieties, tasting room
Spire Mountain, part of Fish Brewing (Olympia) – four varieties, tasting room (Brew Pub)
Three Knees (Snohomish) – four varieties, tasting room in works
Tieton Cider (and Rambling Route) (Tieton) – numerous varieties, tasting room
Twilight Cider Works (Spokane) – numerous varieties, tasting room
Twin Peaks, from Phillippi Fruit (Wenatchee) – three varieties, tasting room
Westcott Bay Cider (San Juan Island) – three varieties, tasting room, online store
Whiskey Barrel Cider Co. (Pullman) – numerous varieties, tasting room
Whitewood Cider Co. (Olympia) – numerous varieties, tasting room, online store

Sources:  Cyder Market, Northwest Cider