The Charter County of Wayne The Charter County of Wayne is Michigan's largest county. We are home to 34 cities and nine townships. From Rockwood to Livonia, from Sumpter Township to the Grosse Pointes, each community in Wayne County offers residents and businesses a unique blend of opportunity to live, work, play and raise families. Headquartered in Detroit, our largest city and the automotive capital of the world, Wayne County offers a diversified economy and high standards for our residents' …