Illinois Population 1900-2018

Chart and table of population level and growth rate for the state of Illinois from 1900 to 2018.
  • The population of Illinois in 2018 was 12,741,080, a 0.35% decline from 2017.
  • The population of Illinois in 2017 was 12,786,196, a 0.32% decline from 2016.
  • The population of Illinois in 2016 was 12,826,895, a 0.29% decline from 2015.
  • The population of Illinois in 2015 was 12,864,342, a 0.19% decline from 2014.
Data Source: U.S. Census Bureau - Population Estimates

MLA Citation:
State Population Ranking
State Name Population
California 39,557,045
Texas 28,701,845
Florida 21,299,325
New York 19,542,209
Pennsylvania 12,807,060
Illinois 12,741,080
Ohio 11,689,442
Georgia 10,519,475
North Carolina 10,383,620
Michigan 9,995,915
New Jersey 8,908,520
Virginia 8,517,685
Washington 7,535,591
Arizona 7,171,646
Massachusetts 6,902,149
Tennessee 6,770,010
Indiana 6,691,878
Missouri 6,126,452
Maryland 6,042,718
Wisconsin 5,813,568
Colorado 5,695,564
Minnesota 5,611,179
South Carolina 5,084,127
Alabama 4,887,871
Louisiana 4,659,978
Kentucky 4,468,402
Oregon 4,190,712
Oklahoma 3,943,079
Connecticut 3,572,665
Utah 3,161,105
Iowa 3,156,145
Nevada 3,034,392
Arkansas 3,013,825
Mississippi 2,986,530
Kansas 2,911,505
New Mexico 2,095,428
Nebraska 1,929,268
West Virginia 1,805,832
Idaho 1,754,208
Hawaii 1,420,491
New Hampshire 1,356,458
Maine 1,338,404
Montana 1,062,305
Rhode Island 1,057,315
Delaware 967,171
North Dakota 760,077
Alaska 737,438
Wyoming 577,737
Illinois - Historical Population Data
Year Population Growth Rate
2018 12,741,080 -0.35%
2017 12,786,196 -0.32%
2016 12,826,895 -0.29%
2015 12,864,342 -0.19%
2014 12,888,962 -0.07%
2013 12,898,269 0.11%
2012 12,884,119 0.13%
2011 12,867,291 0.21%
2010 12,840,762 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%