Living Person
Illinois
is
As of April 15, 2026
243 years old
approximately!
Date of Birth
(1783 ) is
Rabbit
Year
* Calculated from Wikipedia data.
Accuracy is not guaranteed.
approx.Cosmic Age Calculator
Moon
approx. 3253.7 years old
Mercury
approx. 1010.5 years old
Venus
approx. 395.6 years old
Mars
approx. 129.4 years old
Jupiter
approx. 20.5 years old
Saturn
approx. 8.3 years old
* Calculated based on each planet's orbital period.
Illinois | |
|---|---|
| Nicknames: Land of Lincoln, Prairie State, The Inland Empire State | |
| Motto(s): State Sovereignty, National Union | |
| Anthem: "Illinois" | |
 Location of Illinois within the United States | |
| Country | United States |
| Before statehood | Illinois Territory |
| Admitted to the Union | December 3, 1818 (21st) |
| Capital | Springfield |
| Largest city | Chicago |
| Largest county or equivalent | Cook |
| Largest metro and urban areas | Chicagoland |
| Government | |
| • Governor | JB Pritzker (D) |
| • Lieutenant Governor | Juliana Stratton (D) |
| Legislature | General Assembly |
| • Upper house | Illinois Senate |
| • Lower house | Illinois House of Representatives |
| Judiciary | Supreme Court of Illinois |
| U.S. senators | Dick Durbin (D) Tammy Duckworth (D) |
| U.S. House delegation | 14 Democrats 3 Republicans (list) |
| Area | |
• Total | 57,914 sq mi (149,997 km) |
| • Land | 55,587 sq mi (143,969 km) |
| • Water | 2,309 sq mi (5,981 km) 3.99% |
| • Rank | 25th |
| Dimensions | |
| • Length | 390 mi (628 km) |
| • Width | 210 mi (338 km) |
| Elevation | 590 ft (180 m) |
| Highest elevation | 1,235 ft (376.4 m) |
| Lowest elevation (Confluence of Mississippi River and Ohio River) | 279 ft (85 m) |
| Population (2025) | |
• Total |  12,719,141 |
| • Rank | 6th |
| • Density | 232/sq mi (89.4/km) |
| • Rank | 12th |
| • Median household income |  $80,300 (2023) |
| • Income rank | 17th |
| Demonyms | Illinoisan |
| Language | |
| • Official language | English |
| • Spoken language | English (80.8%) Spanish (14.9%) Other (5.1%) |
| Time zone | UTC−06:00 (CST) |
| • Summer (DST) | UTC−05:00 (CDT) |
| USPS abbreviation | IL |
| ISO 3166 code | US-IL |
| Traditional abbreviation | Ill. |
| Latitude | 36° 58′ N to 42° 30′ N |
| Longitude | 87° 30′ W to 91° 31′ W |
| Website | illinois |
Look up "Illinois" on WikipediaWikipedia Categories
- Illinois
- CS1: unfit URL
- Former French colonies
- Contiguous United States
- Midwestern United States
- States of the United States
- All articles proposed for splitting
- Pages including recorded pronunciations
- Use American English from February 2025
- 1818 establishments in the United States
- States and territories established in 1818
- Articles proposed for splitting from September 2024
Loading...