Parts of every county have cable service in Michigan, even little Keweenaw County (the far southern part of the county along US-41 gets Charter from Calumet, while some other parts of Keweenaw County have their own cable system which carries local Marquette channels (WLUC, FOX UP, WBKP, WNMU, WJMN, WZMQ) alongside Detroit channels (WWJ, WDIV, WXYZ, WTVS), WUHF from Rochester NY, and CKPR from Thunder Bay ON. It's actually a decent cable system considering the remoteness of the area (no digital cable, but channels go into the 60s)