Portage Township is a civil township of Mackinac County in the U.S. state of Michigan. As of the 2020 census, its population was 907,^[5] down from 981 in 2010.

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Portage Township, Michigan
Civil township
Portage Township Offices in Curtis
Location within Mackinac County
Portage Township Location within the state of Michigan Show map of Michigan Portage Township Location within the United States Show map of the United States
Coordinates: 46°12′19″N 85°44′14″W
Country	United States
State	Michigan
County	Mackinac
Government
• Supervisor	Stephen Sicinski
• Clerk	Patricia MacLachlan
Area [1]
• Total	72.26 sq mi (187.15 km2)
• Land	55.43 sq mi (143.56 km2)
• Water	16.83 sq mi (43.59 km2)
Elevation	696 ft (212 m)
Population  (2020)[2]
• Total	907
• Density	17.7/sq mi (6.8/km2)
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)
ZIP Codes	49820 (Curtis) 49827 (Engadine) 49836 (Germfask) 49838 (Gould City) 49853 (McMillan)
Area code	906
FIPS code	26-65600[3]
GNIS feature ID	1626927[4]

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Portage Township occupies the northwest corner of Mackinac County, 60 miles (97 km) northwest of St. Ignace, the county seat. The township is bordered to the north by Luce County and to the west by Schoolcraft County.

According to the U.S. Census Bureau, the township has a total area of 72.26 square miles (187.15 km²), of which 55.43 square miles (143.56 km²) are land and 16.83 square miles (43.59 km²) (23.29%) are water.^[1]

As of 2020, its population was 907.^[5]

• Unincorporated community of Curtis
• South Manistique Lake
• Manistique Lake