Ontonagon County, Michigan

Ontonagon County
County
Old Ontonagon County Courthouse in Ontonagon
Location within the U.S. state of Michigan
Michigan's location within the U.S.
Coordinates: 46°59′N 89°16′W / 46.98°N 89.27°W / 46.98; -89.27
Country	United States
State	Michigan
Founded	March 9, 1843 1848 organized[1][2]
Named for	Ontonagon River
Seat	Ontonagon
Largest village	Ontonagon
Area
• Total	3,741 sq mi (9,690 km2)
• Land	1,311 sq mi (3,400 km2)
• Water	2,430 sq mi (6,300 km2)  65%
Population  (2020)
• Total	5,816
• Density	5.2/sq mi (2.0/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
Congressional district	1st
Website	http://ontonagoncounty.org/

Ontonagon County (/ˌɒntəˈnɑːɡən/ ON-tə-NAH-gən) is a county in the Upper Peninsula of the U.S. state of Michigan. As of the 2020 census, the population was 5,816,^[3] making it Michigan's third-least populous county. The county seat is Ontonagon.^[4] The county was set off in 1843, and organized in 1848.^[1] Its territory had been organized as part of Chippewa and Mackinac counties. With increasing population in the area, more counties were organized. After Ontonagon was organized, it was split to create Gogebic County.^[1][5] It is also the westernmost county in United States that lies within the Eastern Time Zone.