Illinois - Population
| Date | Densité | Population |
|---|---|---|
| 2023 | 84 | 12.549.689 |
| 2022 | 84 | 12.582.515 |
| 2021 | 85 | 12.690.341 |
| 2020 | 85 | 12.790.357 |
| 2019 | 86 | 12.850.150 |
| 2018 | 86 | 12.888.646 |
| 2017 | 86 | 12.924.504 |
| 2016 | 86 | 12.946.698 |
| 2015 | 86 | 12.964.764 |
| 2014 | 86 | 12.970.348 |
| 2013 | 86 | 12.960.987 |
| 2012 | 86 | 12.928.106 |
| 2011 | 86 | 12.892.740 |
| 2010 | 86 | 12.845.511 |
| 2009 | 85 | 12.796.778 |
| 2008 | 85 | 12.747.038 |
| 2007 | 85 | 12.695.866 |
| 2006 | 84 | 12.643.955 |
| 2005 | 84 | 12.609.903 |
| 2004 | 84 | 12.589.773 |
| 2003 | 84 | 12.556.006 |
| 2002 | 84 | 12.525.556 |
| 2001 | 83 | 12.488.445 |
| 2000 | 83 | 12.434.161 |
| 1999 | 82 | 12.359.020 |
| 1998 | 82 | 12.271.847 |
| 1997 | 81 | 12.185.715 |
| 1996 | 81 | 12.101.997 |
| 1995 | 80 | 12.008.437 |
| 1994 | 79 | 11.912.585 |
| 1993 | 79 | 11.809.579 |
| 1992 | 78 | 11.694.184 |
| 1991 | 77 | 11.568.964 |
| 1990 | 76 | 11.453.316 |
| 1989 | 76 | 11.409.782 |
| 1988 | 76 | 11.390.186 |
| 1987 | 76 | 11.391.176 |
| 1986 | 76 | 11.387.256 |
| 1985 | 76 | 11.399.803 |
| 1984 | 76 | 11.412.128 |
| 1983 | 76 | 11.408.817 |
| 1982 | 76 | 11.423.413 |
| 1981 | 76 | 11.443.461 |
| 1980 | 76 | 11.434.702 |
| 1979 | 76 | 11.422.782 |
| 1978 | 76 | 11.434.421 |
| 1977 | 76 | 11.406.312 |
| 1976 | 76 | 11.360.274 |
| 1975 | 75 | 11.306.351 |
| 1974 | 75 | 11.273.745 |
| 1973 | 75 | 11.260.248 |
| 1972 | 75 | 11.258.111 |
| 1971 | 75 | 11.205.816 |
| 1970 | 74 | 11.124.681 |
| 1969 | 74 | 11.039.000 |
| 1968 | 73 | 10.995.000 |
| 1967 | 73 | 10.947.000 |
| 1966 | 72 | 10.836.000 |
| 1965 | 71 | 10.693.000 |
| 1964 | 71 | 10.580.000 |
| 1963 | 69 | 10.402.000 |
| 1962 | 69 | 10.280.000 |
| 1961 | 68 | 10.130.000 |
| 1960 | 67 | 10.086.000 |
| 1959 | 67 | 9.986.000 |
| 1958 | 66 | 9.886.000 |
| 1957 | 64 | 9.668.000 |
| 1956 | 64 | 9.530.000 |
| 1955 | 63 | 9.435.000 |
| 1954 | 62 | 9.252.000 |
| 1953 | 60 | 9.065.000 |
| 1952 | 60 | 8.956.000 |
| 1951 | 59 | 8.790.000 |
| 1950 | 58 | 8.738.000 |
| 1949 | 58 | 8.670.000 |
| 1948 | 57 | 8.552.000 |
| 1947 | 56 | 8.344.000 |
| 1946 | 54 | 8.164.000 |
| 1945 | 51 | 7.612.000 |
| 1944 | 51 | 7.718.000 |
| 1943 | 52 | 7.765.000 |
| 1942 | 54 | 8.054.000 |
| 1941 | 53 | 7.995.000 |
| 1940 | 53 | 7.905.000 |
| 1939 | 53 | 7.890.000 |
| 1938 | 52 | 7.866.000 |
| 1937 | 52 | 7.857.000 |
| 1936 | 52 | 7.840.000 |
| 1935 | 52 | 7.797.000 |
| 1934 | 52 | 7.772.000 |
| 1933 | 52 | 7.768.000 |
| 1932 | 52 | 7.736.000 |
| 1931 | 51 | 7.687.000 |
| 1930 | 51 | 7.644.000 |
| 1929 | 51 | 7.606.000 |