Leelanau County is a county located in Michigan. As of the 2020 Census, the population was 22,301. Since 2008, the county seat has been located within Suttons Bay Township, one mile east of the unincorporated village of Lake Leelanau. Before 2008, Leelanau County's seat was Leland. Leelanau County is included in the Traverse City Micropolitan Statistical Area of Northern Michigan. The largest settlement in Leelanau County by population is Greilickville, itself a suburb of Traverse City.
Leelanau County is coterminous with the Leelanau Peninsula, a roughly triangular-shaped peninsula that extends about 30 miles off of Michigan's Lower Peninsula into Lake Michigan. East of Leelanau County is Grand Traverse Bay, a bay of Lake Michigan.
In 2011, the Sleeping Bear Dunes National Lakeshore, located in the county, won the title of "Most Beautiful Place in America" in a poll by morning news show Good Morning America.
Traditionally, the county's name was said to be a Native American word meaning "delight of life".
Leelanau County was separated as an unorganized county in 1840 by the Michigan Legislature. In 1851, it was attached the Grand Traverse County for governmental purposes, and was temporarily given the name "Leelanau Township". In 1863, Leelanau County was organized in its own right. The same year, the southern portion of Leelanau County was separated as Benzie County, and was subsequently attached to Grand Traverse County until 1869.
Sleeping Bear Dunes National Lakeshore was established in 1970, protecting the much of the natural scenery of the area at the federal level.
In 2008, the county seat moved from Leland to a site in Suttons Bay Township, near the town of Lake Leelanau.
According to the U.S. Census Bureau, the county has a total area of 2,532 square miles, of which 347 square miles is land and 2,185 square miles (86%) is water.