Marquette County, WI is located in central Wisconsin and has an area of 588 square miles with a population estimated at 68,712 according to the 2020 Census estimates. The county seat is Montello and its largest city is Westfield with a population of 2,639 people. Marquette County’s economy depends heavily on agriculture but there are also other important sectors such as manufacturing, retail trade and distribution. Additionally, tourism is an important source of income with recreational activities like fishing and boating bringing many visitors during the summer months.