Correction for the size of Mackinac Island
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How big is 179 square miles?
It's about 40 times as big as Mackinac Island
The size of Mackinac Island is about 4.36570 square miles.
(Michigan)
Mackinac Island measures 4.36680 square miles in total land area. The island is located in Lake Huron and is known as a historically-cultured tourist destination and summer colony, home to the well-known Victorian Grand Hotel.