Colorado - Population
| Date | Density | Population |
|---|---|---|
| 2023 | 22 | 5,877,610 |
| 2022 | 22 | 5,841,039 |
| 2021 | 22 | 5,811,596 |
| 2020 | 21 | 5,785,219 |
| 2019 | 21 | 5,735,934 |
| 2018 | 21 | 5,677,250 |
| 2017 | 21 | 5,600,169 |
| 2016 | 21 | 5,529,161 |
| 2015 | 20 | 5,442,196 |
| 2014 | 20 | 5,342,996 |
| 2013 | 20 | 5,263,512 |
| 2012 | 19 | 5,188,703 |
| 2011 | 19 | 5,119,188 |
| 2010 | 19 | 5,047,005 |
| 2009 | 18 | 4,972,195 |
| 2008 | 18 | 4,889,730 |
| 2007 | 18 | 4,803,868 |
| 2006 | 18 | 4,720,423 |
| 2005 | 17 | 4,631,888 |
| 2004 | 17 | 4,575,013 |
| 2003 | 17 | 4,528,732 |
| 2002 | 17 | 4,490,406 |
| 2001 | 16 | 4,425,687 |
| 2000 | 16 | 4,326,921 |
| 1999 | 16 | 4,226,018 |
| 1998 | 15 | 4,116,639 |
| 1997 | 15 | 4,018,293 |
| 1996 | 15 | 3,919,972 |
| 1995 | 14 | 3,826,653 |
| 1994 | 14 | 3,724,168 |
| 1993 | 13 | 3,613,734 |
| 1992 | 13 | 3,495,939 |
| 1991 | 13 | 3,387,119 |
| 1990 | 12 | 3,307,618 |
| 1989 | 12 | 3,275,815 |
| 1988 | 12 | 3,262,280 |
| 1987 | 12 | 3,260,477 |
| 1986 | 12 | 3,237,448 |
| 1985 | 12 | 3,208,726 |
| 1984 | 12 | 3,169,995 |
| 1983 | 12 | 3,133,634 |
| 1982 | 11 | 3,061,562 |
| 1981 | 11 | 2,977,899 |
| 1980 | 11 | 2,908,803 |
| 1979 | 11 | 2,849,181 |
| 1978 | 10 | 2,766,725 |
| 1977 | 10 | 2,696,007 |
| 1976 | 10 | 2,632,244 |
| 1975 | 10 | 2,586,144 |
| 1974 | 9 | 2,541,318 |
| 1973 | 9 | 2,495,803 |
| 1972 | 9 | 2,404,576 |
| 1971 | 9 | 2,303,502 |
| 1970 | 8 | 2,223,979 |
| 1969 | 8 | 2,166,000 |
| 1968 | 8 | 2,120,000 |
| 1967 | 8 | 2,053,000 |
| 1966 | 7 | 2,007,000 |
| 1965 | 7 | 1,985,000 |
| 1964 | 7 | 1,970,000 |
| 1963 | 7 | 1,936,000 |
| 1962 | 7 | 1,899,000 |
| 1961 | 7 | 1,844,000 |
| 1960 | 7 | 1,769,000 |
| 1959 | 6 | 1,710,000 |
| 1958 | 6 | 1,667,000 |
| 1957 | 6 | 1,664,000 |
| 1956 | 6 | 1,625,000 |
| 1955 | 6 | 1,546,000 |
| 1954 | 6 | 1,493,000 |
| 1953 | 5 | 1,431,000 |
| 1952 | 5 | 1,365,000 |
| 1951 | 5 | 1,326,000 |
| 1950 | 5 | 1,325,000 |
| 1949 | 5 | 1,295,000 |
| 1948 | 5 | 1,263,000 |
| 1947 | 5 | 1,236,000 |
| 1946 | 4 | 1,196,000 |
| 1945 | 4 | 1,113,000 |
| 1944 | 4 | 1,124,000 |
| 1943 | 4 | 1,151,000 |
| 1942 | 4 | 1,133,000 |
| 1941 | 4 | 1,124,000 |
| 1940 | 4 | 1,130,000 |
| 1939 | 4 | 1,120,000 |
| 1938 | 4 | 1,112,000 |
| 1937 | 4 | 1,104,000 |
| 1936 | 4 | 1,090,000 |
| 1935 | 4 | 1,078,000 |
| 1934 | 4 | 1,075,000 |
| 1933 | 4 | 1,071,000 |
| 1932 | 4 | 1,066,000 |
| 1931 | 4 | 1,056,000 |
| 1930 | 4 | 1,040,000 |
| 1929 | 4 | 1,008,000 |