Illinois, US
State of the United States of America
Illinois Quick Facts
| Population : | 12,671,821 |
| Country : | United States of America |
| Different from : | Illinois County |
| Office held by head of government : | Governor of Illinois |
| Area : | 149998 km2 |
| Water as percent of area : | 4.13 |
| Continent : | North America |
| Easternmost point : | Point(-87.020833333 42.493611111) |
| Legislative body : | Illinois General Assembly |
| Named for : | Illinois Confederation |
| Official language : | English |
| Altitude : | 597 feet / 182 meters |
| Capital : | Springfield |
| Establishment : | December 12, 1818 (202 years ago) |
| Time Zone : | America/Chicago |
| Local time : | 20:56:17 (27th January 2021) |
- Bruce Rauner , 14 January, 2019 12 January, 2015 - Republican Party
- J.B. Pritzker , 14 January, 2019 - Democratic Party
- 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
| Year | Population | Method |
| 1910 | 5,638,591 | census |
| 1920 | 6,485,280 | census |
| 1930 | 7,630,654 | census |
| 1940 | 7,897,241 | census |
| 1950 | 8,712,176 | census |
| 1960 | 10,081,158 | census |
| 1970 | 11,113,976 | census |
| 1980 | 11,426,518 | census |
| 1990 | 11,430,602 | census |
| 2000 | 12,419,293 | census |
| 2010 | 12,830,632 | census |
| 2011 | 12,867,454 | estimation process |
| 2012 | 12,882,510 | estimation process |
| 2013 | 12,895,129 | estimation process |
| 2014 | 12,884,493 | estimation process |
| 2015 | 12,858,913 | estimation process |
| 2016 | 12,820,527 | estimation process |
| 2017 | 12,778,828 | estimation process |
| 2018 | 12,723,071 | estimation process |
| 2019 | 12,671,821 | estimation process |
Estado de Illinois, Illinois, Illinojs, State of Illinois, Иллинойс
Illinois Populated Places (more)
Cities, Towns, 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 | 2,693,976 |
| Markham | City in Cook County, Illinois, United States | Cook | 328,966 |
| Rockford | County seat of Winnebago County, Illinois, United States | Winnebago | 169,980 |
| Aurora | City in Kane County, Illinois, United States | Kane | 146,557 |
| York | Town in Clark County, Wisconsin, USA | Clark | 125,629 |
| Peoria | County seat of Peoria County, Illinois, United States | Peoria | 110,417 |
| Bremen | Unincorporated community in Illinois | Randolph | 107,415 |
| Elgin | City in Cook and Kane counties in the northern part of the U. | Kane | 104,752 |
| Naperville | City in DuPage and Will counties in Illinois, United States | DuPage | 101,947 |
| Elk Grove | Township in Cook County, Illinois | Cook | 91,251 |
| Champaign | Champaign County, Illinois, United States | Champaign | 88,909 |
| Waukegan | County seat of Lake County, Illinois, United States | Lake | 87,714 |
| Joliet | City in Illinois, United States | Will | 86,178 |
| Cicero | Town in Illinois | Cook | 80,796 |
| Bloomington | City in Illinois, United States | McLean | 77,330 |
| Arlington Heights | Village in Cook County, Illinois, United States; suburb of Chicago, Illinois | Cook | 75,101 |
Show more Illinois cities and populated places
Illinois Counties (more)
| County Name | Population |
|---|---|
| Cook County | 5,150,233 |
| DuPage County | 922,921 |
| Lake County | 696,535 |
| Will County | 690,743 |
| Kane County | 532,403 |
| McHenry County | 307,774 |
| Winnebago County | 282,572 |
| Madison County | 262,966 |
| Saint Clair County | 259,686 |
| Champaign County | 209,689 |
| Sangamon County | 194,672 |
| Peoria County | 179,179 |
| McLean County | 171,517 |
| Rock Island County | 141,879 |
| Tazewell County | 131,803 |
| Kendall County | 128,990 |
Show more Illinois counties
Map & Images (more maps)
Map of Illinois Na 1
Illinois Regions Map
Illinois Flag Map
Counties Map of Illinois
Illinois Relief Map
Illinois Transport Map
Where Is Illinois Located
Illinois Cities And Towns
Illinois County Map
Illinois Reference Map
Illinois Rivers And Lakes
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