Marquette County is the largest county by population in the Upper Peninsula, and borders Alger, Baraga, Iron, Menominee, Dickinson and Delta Counties. Home to Northern Michigan University, it has a population of 66,999, as of 2023. Spanning over 1,800 square miles, it also consists of 55 miles of shoreline on Lake Superior.

The county has a rich history that dates back to the early 19th century. Named after the French Jesuit missionary and explorer, Jacques Marquette, the county was officially established in 1843. The discovery of iron ore in the region during the 1840s sparked significant development, leading to the growth of the city of Marquette as a major port for shipping iron ore. Throughout the 19th century, Marquette County thrived as a center for mining and lumbering. The construction of railroads further boosted its economic growth, facilitating the transportation of natural resources. Over the years, Marquette County has evolved from its industrial roots into a hub for education, healthcare, and tourism, while still preserving its historical heritage.