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Illinois
State in United States
Map
Overview
Illinois sits in the Midwest, with Chicago as its largest city and a major hub for finance, culture, and transport. The state's wide plains stretch from the Great Lakes down to the Mississippi River, with agriculture shaping many rural counties like Montgomery, Clark, Marion, and Stockton. Average temperature statewide is 10.7°C.
Geographic Context
Jurisdiction
United States
State
Illinois
State Code
IL
Cities Tracked
853
Total Population
20,373,778
Time Zone
America/Chicago
Key Metrics
Safety Score
71/100 (Safe)
851 cities assessed
Avg Rent (1-Bed Center)
$955/mo
853 cities
Avg Temperature
10.7°C
853 cities
Internet Speed
260 Mbps
1013 cities
Air Quality
41 (Good)
843 cities
Avg Humidity
78%
Avg Inexpensive Meal
$13.39
Cities in Illinois
853 citiesFrequently Asked Questions
Sources: WAQI | WeatherAPI | World Bank · Last updated: 2025
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