Mount Prospect is a village in Elk Grove and Wheeling Townships in Cook County, Illinois, about 20 miles (32 km) northwest of downtown Chicago, and approximately 4 miles north of O'Hare International Airport. 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.
According to the Köppen climate classification system, Mount Prospect lies within the Humid continental climate zone (or Dfa) in the warm summer type. The village experiences warm to hot and humid summers and frigid, snowy winters. The village lies within U.S.D.A Hardiness zone 5b, along the fringe of zone 6a.
As of the census of 2010, there were 54,167 people, 21,836 housing units, and 14,544 families residing in the city. The population density was 5,310.5 people per square mile (2,050.4/km2) and the housing unit density was 2,140.8 per square mile (826.6/km2). The racial makeup of the city was 77% White, 11.7% Asian, 2.4% Black, 0.4% Native American, 0.01% Pacific Islander, 6.5% from other races, and 2% from two or more races. Hispanic or Latino of any race were 15.5% of the population.
Out of the 21,836 housing units, 32.9% had children under the age of 18 living with them, 58.3% were married couples living together, 8.6% had a female householder with no husband present, and 29.3% were non-families. 24.9% of all households were made up of individuals and 12.0% had someone living alone who was 65 years of age or older.