Washington - Population
| Date | Density | Population |
|---|---|---|
| 2023 | 42 | 7,812,880 |
| 2022 | 42 | 7,784,477 |
| 2021 | 42 | 7,741,433 |
| 2020 | 42 | 7,724,566 |
| 2019 | 41 | 7,638,689 |
| 2018 | 41 | 7,548,537 |
| 2017 | 40 | 7,446,807 |
| 2016 | 40 | 7,315,935 |
| 2015 | 39 | 7,180,454 |
| 2014 | 38 | 7,068,026 |
| 2013 | 38 | 6,974,173 |
| 2012 | 37 | 6,904,030 |
| 2011 | 37 | 6,830,460 |
| 2010 | 37 | 6,743,597 |
| 2009 | 36 | 6,667,426 |
| 2008 | 36 | 6,562,231 |
| 2007 | 35 | 6,461,587 |
| 2006 | 34 | 6,370,753 |
| 2005 | 34 | 6,257,305 |
| 2004 | 33 | 6,178,645 |
| 2003 | 33 | 6,104,115 |
| 2002 | 33 | 6,052,349 |
| 2001 | 32 | 5,985,722 |
| 2000 | 32 | 5,910,512 |
| 1999 | 32 | 5,842,564 |
| 1998 | 31 | 5,769,562 |
| 1997 | 31 | 5,674,747 |
| 1996 | 30 | 5,569,753 |
| 1995 | 30 | 5,481,027 |
| 1994 | 29 | 5,375,161 |
| 1993 | 29 | 5,278,842 |
| 1992 | 28 | 5,160,757 |
| 1991 | 27 | 5,025,624 |
| 1990 | 27 | 4,903,043 |
| 1989 | 26 | 4,746,315 |
| 1988 | 25 | 4,639,894 |
| 1987 | 25 | 4,531,903 |
| 1986 | 24 | 4,452,724 |
| 1985 | 24 | 4,400,096 |
| 1984 | 24 | 4,343,657 |
| 1983 | 23 | 4,300,269 |
| 1982 | 23 | 4,276,551 |
| 1981 | 23 | 4,235,728 |
| 1980 | 22 | 4,154,678 |
| 1979 | 22 | 4,012,831 |
| 1978 | 21 | 3,886,191 |
| 1977 | 20 | 3,772,360 |
| 1976 | 20 | 3,690,561 |
| 1975 | 20 | 3,618,824 |
| 1974 | 19 | 3,547,877 |
| 1973 | 19 | 3,477,227 |
| 1972 | 19 | 3,446,815 |
| 1971 | 19 | 3,446,958 |
| 1970 | 19 | 3,417,362 |
| 1969 | 18 | 3,343,000 |
| 1968 | 18 | 3,270,000 |
| 1967 | 17 | 3,174,000 |
| 1966 | 17 | 3,057,000 |
| 1965 | 16 | 2,967,000 |
| 1964 | 16 | 2,961,000 |
| 1963 | 16 | 2,955,000 |
| 1962 | 16 | 2,942,000 |
| 1961 | 16 | 2,882,000 |
| 1960 | 15 | 2,855,000 |
| 1959 | 15 | 2,821,000 |
| 1958 | 15 | 2,773,000 |
| 1957 | 15 | 2,724,000 |
| 1956 | 14 | 2,668,000 |
| 1955 | 14 | 2,604,000 |
| 1954 | 14 | 2,516,000 |
| 1953 | 13 | 2,466,000 |
| 1952 | 13 | 2,448,000 |
| 1951 | 13 | 2,424,000 |
| 1950 | 13 | 2,387,000 |
| 1949 | 12 | 2,294,000 |
| 1948 | 12 | 2,255,000 |
| 1947 | 12 | 2,225,000 |
| 1946 | 12 | 2,300,000 |
| 1945 | 12 | 2,238,000 |
| 1944 | 12 | 2,138,000 |
| 1943 | 11 | 2,022,000 |
| 1942 | 10 | 1,904,000 |
| 1941 | 10 | 1,793,000 |
| 1940 | 9 | 1,740,000 |
| 1939 | 9 | 1,715,000 |
| 1938 | 9 | 1,698,000 |
| 1937 | 9 | 1,681,000 |
| 1936 | 9 | 1,653,000 |
| 1935 | 9 | 1,629,000 |
| 1934 | 9 | 1,610,000 |
| 1933 | 9 | 1,592,000 |
| 1932 | 9 | 1,584,000 |
| 1931 | 9 | 1,581,000 |
| 1930 | 8 | 1,568,000 |
| 1929 | 8 | 1,555,000 |