Title: Resident Population in Illinois Series ID: ILPOP Source: U.S. Census Bureau Release: Annual Estimates of the Population for the U.S. and States, and for Puerto Rico (Not a Press Release) Seasonal Adjustment: Not Seasonally Adjusted Frequency: Annual Units: Thousands of Persons Date Range: 1900-01-01 to 2023-01-01 Last Updated: 2023-12-19 10:44 AM CST Notes: Data for "Resident Population" from 1901 to present are July 1 estimates of each year. DATE VALUE 1900-01-01 4828.000 1901-01-01 4914.000 1902-01-01 4992.000 1903-01-01 5071.000 1904-01-01 5161.000 1905-01-01 5241.000 1906-01-01 5309.000 1907-01-01 5384.000 1908-01-01 5474.000 1909-01-01 5567.000 1910-01-01 5668.000 1911-01-01 5757.000 1912-01-01 5828.000 1913-01-01 5961.000 1914-01-01 6109.000 1915-01-01 6194.000 1916-01-01 6274.000 1917-01-01 6313.000 1918-01-01 6275.000 1919-01-01 6392.000 1920-01-01 6663.000 1921-01-01 6858.000 1922-01-01 6958.000 1923-01-01 7068.000 1924-01-01 7215.000 1925-01-01 7306.000 1926-01-01 7395.000 1927-01-01 7519.000 1928-01-01 7576.000 1929-01-01 7606.000 1930-01-01 7644.000 1931-01-01 7687.000 1932-01-01 7736.000 1933-01-01 7768.000 1934-01-01 7772.000 1935-01-01 7797.000 1936-01-01 7840.000 1937-01-01 7857.000 1938-01-01 7866.000 1939-01-01 7890.000 1940-01-01 7905.000 1941-01-01 7995.000 1942-01-01 8057.000 1943-01-01 7761.000 1944-01-01 7719.000 1945-01-01 7601.000 1946-01-01 8155.000 1947-01-01 8341.000 1948-01-01 8552.000 1949-01-01 8670.000 1950-01-01 8738.000 1951-01-01 8790.000 1952-01-01 8956.000 1953-01-01 9065.000 1954-01-01 9252.000 1955-01-01 9435.000 1956-01-01 9530.000 1957-01-01 9668.000 1958-01-01 9886.000 1959-01-01 9986.000 1960-01-01 10086.000 1961-01-01 10130.000 1962-01-01 10280.000 1963-01-01 10402.000 1964-01-01 10580.000 1965-01-01 10693.000 1966-01-01 10836.000 1967-01-01 10947.000 1968-01-01 10995.000 1969-01-01 11039.000 1970-01-01 11110.285 1971-01-01 11202.397 1972-01-01 11251.948 1973-01-01 11251.367 1974-01-01 11262.145 1975-01-01 11291.743 1976-01-01 11342.853 1977-01-01 11386.316 1978-01-01 11412.561 1979-01-01 11396.837 1980-01-01 11434.702 1981-01-01 11443.458 1982-01-01 11423.412 1983-01-01 11408.818 1984-01-01 11412.132 1985-01-01 11399.806 1986-01-01 11387.257 1987-01-01 11391.178 1988-01-01 11390.183 1989-01-01 11409.782 1990-01-01 11446.979 1991-01-01 11535.973 1992-01-01 11635.197 1993-01-01 11725.984 1994-01-01 11804.986 1995-01-01 11884.935 1996-01-01 11953.003 1997-01-01 12011.509 1998-01-01 12069.774 1999-01-01 12128.370 2000-01-01 12434.161 2001-01-01 12488.445 2002-01-01 12525.556 2003-01-01 12556.006 2004-01-01 12589.773 2005-01-01 12609.903 2006-01-01 12643.955 2007-01-01 12695.866 2008-01-01 12747.038 2009-01-01 12796.778 2010-01-01 12840.545 2011-01-01 12867.783 2012-01-01 12883.029 2013-01-01 12895.778 2014-01-01 12885.092 2015-01-01 12859.585 2016-01-01 12821.709 2017-01-01 12779.893 2018-01-01 12724.685 2019-01-01 12667.017 2020-01-01 12790.357 2021-01-01 12690.341 2022-01-01 12582.515 2023-01-01 12549.689