Mount Prospect, Illinois

Mount Prospect population, 2020 to 2024

Mount Prospect lost 1,245 residents from July 2020 to July 2024, a change of -2.2%. In the latest year it moved by +712. Among 330 Illinois places of 5,000 or more, that growth ranks 229th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Mount Prospect is 3.8 times that size.

Mount Prospect covers 10.72 square miles of land and 0.04 of water, for 5,174 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Mount Prospect is denser than the typical town.

What county Mount Prospect is in

All of Mount Prospect's residents live in Cook County, which had 5,182,617 residents in 2024. Mount Prospect holds 1.1% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Mount Prospect

1 ZIP Code Tabulation Area (ZCTA) overlaps Mount Prospect by at least 10% of the ZCTA's or the village's land: 60056. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a village that annexed land after 2020 may reach into ZIP codes not listed here.

Where Mount Prospect is

The Census internal point of Mount Prospect is at 42.064200, -87.937400. Springfield, the capital, is 181.3 miles SSW in a straight line. The nearest larger place is Des Plaines, IL (58,832 people), 2.8 miles away. The nearest city of 100,000 or more is Elgin, IL, 20.0 miles away.

Daylight in Mount Prospect

At 42.06° N, Mount Prospect gets about 15 h 15 min of daylight around the June solstice and 9 h 07 min around the December solstice, a swing of 6 h 09 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Mount Prospect

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Prospect Heights, 2.8 miles away, with 15,566 people.