Illinois, US
Illinois: State of the United States of America
About
Quick Facts about Illinois
Population : | 12,587,530 |
Country : | United States of America |
Different from : | Illinois County |
Head of government : | Governor of Illinois |
Area : | 149998 km2 |
Water as percent of area : | 4.13% |
Land as percent of area : | 95.87% |
Continent : | North America |
Easternmost point : | Point(-87.020833333 42.493611111), Point(-87.497275 38.782655555) |
Legislative body : | Illinois General Assembly |
Named for : | Illinois Confederation |
Official language : | English |
Altitude : | 597 feet / 182 meters |
Capital : | Springfield |
Establishment : | December 12, 1818 (203 years ago) |
Time Zone : | America/Chicago, Central Time Zone |
Local time : | 07:08:20 (27th June 2022) |
Weather : | 79℉ Mostly Sunny 7-days weather |



Geography
Illinois is located at 40°0'1"N 89°15'1"W (40.0003204, -89.2503681). It has 6 neighbors: Missouri, Iowa, Indiana, Michigan, Wisconsin and Kentucky.
Illinois map
The largest city of Illinois is Chicago with a population of 2,677,643. Other cities include, Markham population 328,966, Aurora population 196,383, Naperville population 147,986 and Rockford population 144,835. See all Illinois cities & populated places.
Largest Cities in Illinois (more)
Cities, Towns, Villages, Neighborhoods & Other Populated Places in Illinois.
City Name | Title | County | Population |
---|---|---|---|
Chicago | City and county seat of Cook County, Illinois, United States | Nomós Aitolías kai Akarnanías | 2,677,643 |
Markham | City in Cook County, Illinois, United States | Cook | 328,966 |
Aurora | City in Kane County, Illinois, United States | Kane | 196,383 |
Naperville | City in DuPage and Will counties in Illinois, United States | DuPage | 147,986 |
Rockford | County seat of Winnebago County, Illinois, United States | Winnebago | 144,835 |
York | Town in Clark County, Wisconsin, USA | Clark | 124,802 |
Springfield | City in and county seat of Sangamon County, Illinois, United States and Illinois federated state capital city | Sangamon | 113,671 |
North Peoria | City in Peoria County, Illinois, United States of America | Peoria | 113,004 |
Elgin | City in Cook and Kane counties in the northern part of the U. | Kane | 110,196 |
Peoria | County seat of Peoria County, Illinois, United States | Peoria | 109,428 |
Bremen | Precinct in Randolph County | Randolph | 106,197 |
Champaign | Champaign County, Illinois, United States | Champaign | 89,390 |
Joliet | City in Illinois, United States | Will | 85,583 |
Waukegan | County seat of Lake County, Illinois, United States | Lake | 85,453 |
Cicero | Town in Illinois | Cook | 79,727 |
Bloomington | City in Illinois, United States | McLean | 77,132 |
Show more Illinois cities and populated places
Weather
Illinois forecast: Mostly sunny, with a high near 79. more
- Official Website
Official website of Illinois
- Bruce Rauner , 14 January, 2019 2015-01-12T00:00:00Z Republican Party
- J.B. Pritzker , 2019-01-14T00:00:00Z Democratic Party
Illinois has 6 neighbours.
- Jersey County
- Hardin County
- Lawrence County
- Jefferson County
- Henry County
- Saline County
- Kankakee County
- Vermilion County
- Pope County
- Piatt County
- Winnebago County
- Jo Daviess County
- LaSalle County
- Kane County
- Stephenson County
- Hamilton County
- Stark County
- Sangamon County
- Macoupin County
- Rock Island County
- Johnson County
- Montgomery County
- Logan County
- McDonough County
- Pike County
- McHenry County
- Scott County
- Washington County
- Hancock County
- Lake County
- Henderson County
- Jackson County
- Madison County
- Marion County
- Richland County
- Shelby County
- Wayne County
- Livingston County
- Will County
- Wabash County
- Kendall County
- Massac County
- Woodford County
- Mason County
- Iroquois County
- Schuyler County
- Putnam County
- Union County
- Williamson County
- Perry County
- Warren County
- Macon County
- Moultrie County
- Monroe County
- Lee County
- Morgan County
- Mercer County
- Ogle County
- Grundy County
- Pulaski County
- Whiteside County
- Tazewell County
- Peoria County
- Randolph County
- White County
- Menard County
- Knox County
- Marshall County
- Jasper County
- St. Clair County
- McLean County
- Carroll County
- DeWitt County
- Cumberland County
- Adams County
- Crawford County
- Calhoun County
- Greene County
- Clay County
- Coles County
- Ford County
- Fayette County
- DuPage County
- DeKalb County
- Brown County
- Effingham County
- Bureau County
- Franklin County
- Champaign County
- Cook County
- Clark County
- Boone County
- Cass County
- Clinton County
- Edgar County
- Douglas County
- Alexander County
- Christian County
- Edwards County
- Bond County
- Fulton County
- Gallatin County
Demographics
Year | Population | % Change | Method |
1910 | 5,638,591 | - | census |
1920 | 6,485,280 | 13.06% | census |
1930 | 7,630,654 | 15.01% | census |
1940 | 7,897,241 | 3.38% | census |
1950 | 8,712,176 | 9.35% | census |
1960 | 10,081,158 | 13.58% | census |
1970 | 11,113,976 | 9.29% | census |
1980 | 11,426,518 | 2.74% | census |
1990 | 11,430,602 | 0.04% | census |
2000 | 12,419,293 | 7.96% | census |
2010 | 12,830,632 | 3.21% | census |
2011 | 12,867,454 | 0.29% | estimation process |
2012 | 12,882,510 | 0.12% | estimation process |
2013 | 12,895,129 | 0.1% | estimation process |
2014 | 12,884,493 | -0.08% | estimation process |
2015 | 12,858,913 | -0.2% | estimation process |
2016 | 12,820,527 | -0.3% | estimation process |
2017 | 12,778,828 | -0.33% | estimation process |
2018 | 12,723,071 | -0.44% | estimation process |
2019 | 12,671,821 | -0.4% | estimation process |
2020 | 12,587,530 | -0.67% | estimation process |
People born in Illinois (200)
People born in Illinois, including writer Wallace Wattles, film writer and director James Edward Grant, designer Gordon Buehrig, .
List
- Louis Diage (set decorator) he was born in 22/07/1905
- Beast (Fictonal comic book character)
- Harold Lasswell (American political scientist) he was born in 13/02/1902
- Tex Williams (American musician (1917-1985)) he was born in 23/08/1917
- Don Marquis (American writer) he was born in 29/07/1878
- Samuel Putnam (American translator and scholar of Romance languages) he was born in 10/10/1892
- Ashton C. Shallenberger (American politician (1862-1938)) he was born in 23/12/1862
- Cynthia Ann Parker (American kidnapped by the Comanches) she was born in 01/01/1827
- Jonatha Brooke (American musician) she was born in 23/01/1964
- Floyd Davis (racing driver) he was born in 05/03/1909
- Mary Alice McWhinnie (American biologist) she was born in 10/08/1922
- Richard Allan (American actor (1923-1999)) he was born in 22/06/1923
- John Miller (American entrepreneur) he was born in 01/01/1872
- Marcia Moretto (Argentinian dancer) she was born in 18/07/1946
- Charles Thias (American tug-of-war competitor) he was born in 15/11/1879
- Raphael Tracey (American soccer player (1904-1975)) he was born in 06/02/1904
- Robby Steinhardt (American musician) he was born in 25/05/1950
- W. Ryerson Johnson (American writer) he was born in 19/10/1901
Illinois Counties (more)
County Name | Population |
---|---|
Cook County | 5,108,284 |
DuPage County | 917,481 |
Lake County | 693,593 |
Will County | 688,726 |
Kane County | 531,010 |
McHenry County | 305,888 |
Winnebago County | 281,295 |
Madison County | 262,635 |
Saint Clair County | 258,046 |
Champaign County | 209,192 |
Sangamon County | 193,882 |
Peoria County | 177,652 |
McLean County | 171,256 |
Rock Island County | 140,907 |
Tazewell County | 130,777 |
Kendall County | 130,638 |
Show more Illinois counties