Illinois Population Statistics

Year Population
2019 12,671,821
2018 12,723,071
2017 12,778,828
2016 12,820,527
2015 12,858,913
2014 12,884,493
2013 12,895,129
2012 12,882,510
2011 12,867,454
2010 12,840,503
2009 12,796,778
2008 12,747,038
2007 12,695,866
2006 12,643,955
2005 12,609,903
2004 12,589,773
2003 12,556,006
2002 12,525,556
2001 12,488,445
2000 12,434,161
1999 12,128,370
1998 12,069,774
1997 12,011,509
1996 11,953,003
1995 11,884,935
1994 11,804,986
1993 11,725,984
1992 11,635,197
1991 11,535,973
1990 11,446,979
1989 11,409,782
1988 11,390,183
1987 11,391,178
1986 11,387,257
1985 11,399,806
1984 11,412,132
1983 11,408,818
1982 11,423,412
1981 11,443,458
1980 11,434,702
1979 11,396,837
1978 11,412,561
1977 11,386,316
1976 11,342,853
1975 11,291,743
1974 11,262,145
1973 11,251,367
1972 11,251,948
1971 11,202,397
1970 11,110,285
1969 11,039,000
1968 10,995,000
1967 10,947,000
1966 10,836,000
1965 10,693,000
1964 10,580,000
1963 10,402,000
1962 10,280,000
1961 10,130,000
1960 10,086,000
1959 9,986,000
1958 9,886,000
1957 9,668,000
1956 9,530,000
1955 9,435,000
1954 9,252,000
1953 9,065,000
1952 8,956,000
1951 8,790,000
1950 8,738,000
1949 8,670,000
1948 8,552,000
1947 8,341,000
1946 8,155,000
1945 7,601,000
1944 7,719,000
1943 7,761,000
1942 8,057,000
1941 7,995,000
1940 7,905,000
1939 7,890,000
1938 7,866,000
1937 7,857,000
1936 7,840,000
1935 7,797,000
1934 7,772,000
1933 7,768,000
1932 7,736,000
1931 7,687,000
1930 7,644,000
1929 7,606,000
1928 7,576,000
1927 7,519,000
1926 7,395,000
1925 7,306,000
1924 7,215,000
1923 7,068,000
1922 6,958,000
1921 6,858,000
1920 6,663,000
1919 6,392,000
1918 6,275,000
1917 6,313,000
1916 6,274,000
1915 6,194,000
1914 6,109,000
1913 5,961,000
1912 5,828,000
1911 5,757,000
1910 5,668,000
1909 5,567,000
1908 5,474,000
1907 5,384,000
1906 5,309,000
1905 5,241,000
1904 5,161,000
1903 5,071,000
1902 4,992,000
1901 4,914,000
1900 4,828,000