Iosco County, Michigan

Iosco County, Michigan
Iosco County Building in Tawas City
Location within the U.S. state of Michigan
Coordinates: 44°17′N 83°20′W / 44.28°N 83.34°W / 44.28; -83.34
Country United States
State Michigan
Founded1840 (as "Kanotin")
1857 organized
SeatTawas City
Largest cityEast Tawas
Area
 • Total
1,890 sq mi (4,900 km2)
 • Land549 sq mi (1,420 km2)
 • Water1,341 sq mi (3,470 km2)  71%
Population
 (2020)
 • Total
25,237
 • Estimate 
(2024)
25,361
 • Density46.0/sq mi (17.7/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district1st
Websiteiosco.net

Iosco County (/ˈɒsk/ eye-OSS-koh) is a county in the U.S. state of Michigan; its eastern border is formed by Lake Huron. As of the 2020 census, its population was 25,237. Its county seat is Tawas City.