Leelanau County ( ) is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 21,708. The county seat was until recently the unincorporated community of Leland. On August 3, 2004, county voters approved a proposal to move the county seat to Suttons Bay Township, closer to the county's geographic center. In 2008, the county offices completed their move to a new government center built on 45 acres (180,000 m²) of county-owned land, one mile east of the unincorporated village of Lake Leelanau, where a new county law enforcement center was completed.