Marquette County
Also known as Marquette County, Michigan, Marquette County, MI
county in the Upper Peninsula of Michigan, United States
Key facts
- Country
- United States
- State
- Michigan
- Founded
- March 9, 1843, organized 1851
- Named after
- Jacques Marquette
- Seat
- Marquette
- Largest city
- Marquette
- Total
- 3,425 sq mi (8,870 km )
- Land
- 1,808 sq mi (4,680 km )
- Water
- 1,616 sq mi (4,190 km ) 47%
- Estimate 2025
- 68,064
- Density
- 37/sq mi (14/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
~9 min read
Article
Marquette County (/mɑːrˈkɛt/ mar-KET) is a county located in the Upper Peninsula of the U.S. state of Michigan. As of the 2020 census, the population was 66,017. It is the most populous county in the Upper Peninsula. The county seat is Marquette. The county is named for Father Marquette, a Jesuit missionary. It was set off in 1843 and organized in 1851.
Marquette County comprises the Marquette, MI micropolitan statistical area.