Illinois Population 1900-2019

Chart and table of population level and growth rate for the state of Illinois from 1900 to 2019.
  • The population of Illinois in 2019 was 12,671,821, a 0.4% decline from 2018.
  • The population of Illinois in 2018 was 12,723,071, a 0.44% decline from 2017.
  • The population of Illinois in 2017 was 12,778,828, a 0.33% decline from 2016.
  • The population of Illinois in 2016 was 12,820,527, a 0.3% decline from 2015.
Data Source: U.S. Census Bureau - Population Estimates

MLA Citation:
State Population Ranking
State Name Population
California 39,512,223
Texas 28,995,881
Florida 21,477,737
New York 19,453,561
Pennsylvania 12,801,989
Illinois 12,671,821
Ohio 11,689,100
Georgia 10,617,423
North Carolina 10,488,084
Michigan 9,986,857
New Jersey 8,882,190
Virginia 8,535,519
Washington 7,614,893
Arizona 7,278,717
Massachusetts 6,892,503
Tennessee 6,829,174
Indiana 6,732,219
Missouri 6,137,428
Maryland 6,045,680
Wisconsin 5,822,434
Colorado 5,758,736
Minnesota 5,639,632
South Carolina 5,148,714
Alabama 4,903,185
Louisiana 4,648,794
Kentucky 4,467,673
Oregon 4,217,737
Oklahoma 3,956,971
Connecticut 3,565,287
Utah 3,205,958
Iowa 3,155,070
Nevada 3,080,156
Arkansas 3,017,804
Mississippi 2,976,149
Kansas 2,913,314
New Mexico 2,096,829
Nebraska 1,934,408
West Virginia 1,792,147
Idaho 1,787,065
Hawaii 1,415,872
New Hampshire 1,359,711
Maine 1,344,212
Montana 1,068,778
Rhode Island 1,059,361
Delaware 973,764
North Dakota 762,062
Alaska 731,545
Wyoming 578,759
Illinois - Historical Population Data
Year Population Growth Rate
2019 12,671,821 -0.40%
2018 12,723,071 -0.44%
2017 12,778,828 -0.33%
2016 12,820,527 -0.30%
2015 12,858,913 -0.20%
2014 12,884,493 -0.08%
2013 12,895,129 0.10%
2012 12,882,510 0.12%
2011 12,867,454 0.21%
2010 12,840,503 0.34%
2009 12,796,778 0.39%
2008 12,747,038 0.40%
2007 12,695,866 0.41%
2006 12,643,955 0.27%
2005 12,609,903 0.16%
2004 12,589,773 0.27%
2003 12,556,006 0.24%
2002 12,525,556 0.30%
2001 12,488,445 0.44%
2000 12,434,161 2.52%
1999 12,128,370 0.49%
1998 12,069,774 0.49%
1997 12,011,509 0.49%
1996 11,953,003 0.57%
1995 11,884,935 0.68%
1994 11,804,986 0.67%
1993 11,725,984 0.78%
1992 11,635,197 0.86%
1991 11,535,973 0.78%
1990 11,446,979 0.33%
1989 11,409,782 0.17%
1988 11,390,183 -0.01%
1987 11,391,178 0.03%
1986 11,387,257 -0.11%
1985 11,399,806 -0.11%
1984 11,412,132 0.03%
1983 11,408,818 -0.13%
1982 11,423,412 -0.18%
1981 11,443,458 0.08%
1980 11,434,702 0.33%
1979 11,396,837 -0.14%
1978 11,412,561 0.23%
1977 11,386,316 0.38%
1976 11,342,853 0.45%
1975 11,291,743 0.26%
1974 11,262,145 0.10%
1973 11,251,367 -0.01%
1972 11,251,948 0.44%
1971 11,202,397 0.83%
1970 11,110,285 0.65%
1969 11,039,000 0.40%
1968 10,995,000 0.44%
1967 10,947,000 1.02%
1966 10,836,000 1.34%
1965 10,693,000 1.07%
1964 10,580,000 1.71%
1963 10,402,000 1.19%
1962 10,280,000 1.48%
1961 10,130,000 0.44%
1960 10,086,000 1.00%
1959 9,986,000 1.01%
1958 9,886,000 2.25%
1957 9,668,000 1.45%
1956 9,530,000 1.01%
1955 9,435,000 1.98%
1954 9,252,000 2.06%
1953 9,065,000 1.22%
1952 8,956,000 1.89%
1951 8,790,000 0.60%
1950 8,738,000 0.78%
1949 8,670,000 1.38%
1948 8,552,000 2.53%
1947 8,341,000 2.28%
1946 8,155,000 7.29%
1945 7,601,000 -1.53%
1944 7,719,000 -0.54%
1943 7,761,000 -3.67%
1942 8,057,000 0.78%
1941 7,995,000 1.14%
1940 7,905,000 0.19%
1939 7,890,000 0.31%
1938 7,866,000 0.11%
1937 7,857,000 0.22%
1936 7,840,000 0.55%
1935 7,797,000 0.32%
1934 7,772,000 0.05%
1933 7,768,000 0.41%
1932 7,736,000 0.64%
1931 7,687,000 0.56%
1930 7,644,000 0.50%
1929 7,606,000 0.40%
1928 7,576,000 0.76%
1927 7,519,000 1.68%
1926 7,395,000 1.22%
1925 7,306,000 1.26%
1924 7,215,000 2.08%
1923 7,068,000 1.58%
1922 6,958,000 1.46%
1921 6,858,000 2.93%
1920 6,663,000 4.24%
1919 6,392,000 1.86%
1918 6,275,000 -0.60%
1917 6,313,000 0.62%
1916 6,274,000 1.29%
1915 6,194,000 1.39%
1914 6,109,000 2.48%
1913 5,961,000 2.28%
1912 5,828,000 1.23%
1911 5,757,000 1.57%
1910 5,668,000 1.81%
1909 5,567,000 1.70%
1908 5,474,000 1.67%
1907 5,384,000 1.41%
1906 5,309,000 1.30%
1905 5,241,000 1.55%
1904 5,161,000 1.77%
1903 5,071,000 1.58%
1902 4,992,000 1.59%
1901 4,914,000 1.78%
1900 4,828,000 0.00%