Door County waa degmada ugu fog bariga gobolka Wisconsin ee Mareykanka . Laga soo bilaabo tirakoobkii 2010, tirada dadka ku nool gobolka waxay ahaayeen 27,785. Kursiga degmadu waa Sturgeon Bay, taas oo ka dhigaysa mid ka mid ah saddexda degmo ee Wisconsin ee harada Lake Michigan inaysan yeelan kursi degmo oo isku magac ah. Taabadalkeed waxaa loogu magac daray marinka cidhiidhka ah ee u dhexeeya Jasiiradda Door peninsula iyo jasiirada Washington. Marinka halista ah, ee loo yaqaan Albaabka Dhimashada, waxaa ku jira maraakiib burburay wuxuuna caan ku ahaa dadkii asalka maraykanka ahaa iyo sahamiyayaashii hore ee Faransiiska Gobolka waxaa la sameeyay 1851 waxaana la abaabulay 1861. Degmada Door waa meel caan ah oo loo dalxiis tago. Magaca Door County wuxuu ka yimid Porte des Morts oo macnaheedu yahay ("Albaabka Geerida"), waana marinka udhaxeeya jasiirada Door Peninsula iyo jasiirada Washington Island. Magaca "Albaabka Dhimashada" wuxuu ka yimid sheekooyinka dadkii asalka Mareykanka ahaa, oo ay maqleen sahamiyayaashii hore ee Faransiiska waxaana loo daabacay qaab aad loo qurxiyay oo uu daabacay Hjalmar Holand, kaasoo ku tilmaamay duulaan fashilmay oo ay soo qaadeen qabiilka Ho-Chunk (Winnebago) si ay uga qabsadaan Jasiiradda Washington island qabiilka la tartamaya ee Pottawatomi. horaantii 1600.