Mount Prospect is a village in Elk Grove and Wheeling Townships in Cook County, Illinois, about 22 miles (35 km) northwest of downtown Chicago. As of the 2010 census, the village had a total population of 54,167.
Mount Prospect is located at 42°3′56″N 87°56′10″W (42.065427, -87.936217).
According to the 2010 census, Mount Prospect has a total area of 10.374 square miles (26.87 km2), of which 10.34 square miles (26.78 km2) (or 99.67%) is land and 0.034 square miles (0.09 km2) (or 0.33%) is water. At 665 feet above sea level, Mount Prospect is a high point in the immediate area.