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Chicago is the third-largest city in the United States and a major center of finance, industry, and culture in the Midwest. The city has a population estimated at 2,708,770 inhabitants (2026 estimate). Founded in the early 19th century, Chicago grew rapidly due to its strategic location along the Great Lakes and its role as a transportation hub connecting the eastern and western United States. After the devastating Great Chicago Fire, the city was rebuilt and became a global leader in modern architecture.
Today, Chicago is known for its skyline, cultural institutions, and economic importance. Notable landmarks include the Willis Tower, one of the tallest buildings in the world, the scenic Millennium Park, and the vibrant Navy Pier. Chicago has also been the birthplace of many influential figures, including Walt Disney, writer Ernest Hemingway, and actor Harrison Ford.
Chicago in United States
87.6° W
Chicago Population Evolution
The population of Chicago in 2026 is estimated to 2,708,770 inhabitants. This estimate is taken from our extrapolation of available data and not an official estimate.
Population Summary
| Year | Population | Change |
|---|---|---|
| 1840 | 4,470 | |
| 1890 | 1,099,850 | +24,505.1% |
| 1950 | 3,620,962 | +229.2% |
| 2000 | 2,896,016 | -20.0% |
| 2024 | 2,721,308 | -6.0% |
Interactive Map of Chicago
What to see in Chicago
Willis Tower
Art Institute of Chicago
Chicago River
riverChicago Cultural Center
LibraryMain parks in Chicago
| Name | Area (ha) | Area (acres) | Opened |
|---|---|---|---|
| Lincoln Park | 490.0 | 1,210.8 | 1843 |
| Burnham Park | 242.0 | 598.0 | 1920 |
| Jackson Park | 200.0 | 494.2 | 1871 |
| Washington Park | 151.0 | 373.1 | 1870 |
| Grant Park | 129.0 | 318.8 | 1844 |
| Marquette Park | 120.0 | 296.5 | — |
| Humboldt Park | 84.0 | 207.6 | 1877 |
| Calumet Park | 81.0 | 200.2 | 1905 |
| Garfield Park | 75.0 | 185.3 | 1874 |
| Douglass Park | 70.0 | 173.0 | 1879 |
| Columbus Park | 58.0 | 143.3 | 1915 |
| Millennium Park | 9.9 | 24.5 | 2004 |
Famous People Born in Chicago
Ernest Hemingway
screenwriterAmerican author and journalist
Walt Disney
screenwriterHarrison Ford
actorAmerican actor
Hillary Clinton
lawyerAmerican politician and diplomat
Robin Williams
screenwriterAmerican actor and comedian
Sister Cities of Chicago
Sister cities, also known as twin cities, are formal partnerships between cities in different countries to promote cultural and commercial ties.
This list is based on publicly available structured data and may differ slightly from official municipal publications.
| City | Country | Population |
|---|---|---|
| Delhi | 🇮🇳 India | 45,909,120 |
| Shanghai | 🇨🇳 China | 27,539,620 |
| Lahore | 🇵🇰 Pakistan | 15,277,850 |
| Mexico City | 🇲🇽 Mexico | 9,559,490 |
| Shenyang | 🇨🇳 China | 9,070,093 |
| Bogotá | 🇨🇴 Colombia | 8,034,649 |
| Amman | 🇯🇴 Jordan | 4,007,526 |
| Busan | 🇰🇷 South Korea | 3,453,198 |
| Casablanca | 🇲🇦 Morocco | 3,215,935 |
| Kyiv | 🇺🇦 Ukraine | 2,952,301 |
| Toronto | 🇨🇦 Canada | 2,857,140 |
| Osaka | 🇯🇵 Japan | 2,825,030 |
| Hamburg | 🇩🇪 Germany | 1,910,160 |
| Warsaw | 🇵🇱 Poland | 1,862,402 |
| Accra | 🇬🇭 Ghana | 1,782,150 |
| Prague | 🇨🇿 Czech Republic | 1,397,880 |
| Milan | 🇮🇹 Italy | 1,354,100 |
| Belgrade | 🇷🇸 Serbia | 1,197,714 |
| Birmingham | 🇬🇧 United Kingdom | 1,137,100 |
| Gothenburg | 🇸🇪 Sweden | 674,529 |
| Athens | 🇬🇷 Greece | 643,452 |
| Durban | 🇿🇦 South Africa | 595,061 |
| Vilnius | 🇱🇹 Lithuania | 581,475 |
| Petah Tikva | 🇮🇱 Israel | 236,169 |
| Lucerne | 🇨🇭 Switzerland | 86,234 |
| Galway | 🇮🇪 Ireland | 83,456 |
Learn more about Chicago
Other facts about Chicago
Sources & References
- Wikidata
- United States Census Bureau (accessed on 16 March 2026)