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Mount Prospect, Illinois

Located in Cook County, Illinois, Mount Prospect was established in 1874. NW Chicago suburb near Arlington Heights. Named for a prospect (overlook) of the surrounding terrain.
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Founded 1874 | Population 55,000 | Peak 55,000 (2024) | County Cook County

Top 10 Most Important Events for Mount Prospect, Illinois

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1874Founded: NW Chicago suburb.
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1917Incorporated: Mount Prospect was officially incorporated as a city.
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2010Modern Era: Mount Prospect continued to develop as part of the greater metropolitan area, with new infrastructure and community amenities.
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2020Modern Growth: Mount Prospect continued to grow as part of its metropolitan area.
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Latest News in Mount Prospect

Feb 20, 2026
They’ve Won $288 Million From The Lottery But The State Won’t Pay Them
Winning the lottery has been the dream for many, and in Illinois, lottery winners are hitting the jackpot.

Complete Historical Timeline

1874 Culture
Founded
1917 Government
Incorporated
2010 Culture
Modern Era
2020 Culture
Modern Growth

Did You Know?

1
NW Chicago suburb near Arlington Heights.
2
Named for a prospect (overlook) of the surrounding terrain.
3
Diverse community in Cook County.
4
Mount Prospect was founded in 1874.
5
Mount Prospect has a population of approximately 55,000.

Famous People from Mount Prospect, Illinois

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John Ratcliffe
Lawyer, Politician · Born Oct 20, 1965 · Age 60
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Ian Brennan
Screenwriter, Actor · Born Apr 23, 1978 · Age 47
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Lee DeWyze
Singer, Pianist · Born Apr 2, 1986 · Age 39
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