Illinois Secretary of State Jesse White notified the City of Morrison, on Thursday, October 14, 2021, of Official Results of the 2020 Census. The number of inhabitants of the City of Morrison, IL, is 4085.
Population counts from 150 years ago to the last Census in 2010 are listed. Percentage growth figures and losses follow the population counts.
1880: 1981 (No prior data available for comparison.)
1890: 2088 5.4%
1900: 2308 10.5%
1910: 2410 4.4%
1920: 3000 24.5%
1930: 3067 2.2%
1940: 3187 3.9%
1950: 3531 10.8%
1960: 4159 17.8%
1970: 4387 5.5%
1980: 4605 5.0%
1990: 4363 −5.3%
2000: 4447 1.9%
2010: 4188 −5.8%.