Duluth-Superior, MN-WI Population by Decades
| Date |
Population |
Population Change |
Annual % Change |
| 1900 | 119,267 | - | - |
| 1910 | 210,696 | 91,429 | 5.9 |
| 1920 | 256,162 | 45,466 | 2.0 |
| 1930 | 251,179 | -4,983 | -0.2 |
| 1940 | 254,036 | 2,857 | 0.1 |
| 1950 | 252,777 | -1,259 | 0.0 |
| 1960 | 276,596 | 23,819 | 0.9 |
| 1970 | 265,350 | -11,246 | -0.4 |
| 1980 | 266,650 | 1,300 | 0.0 |
| 1990 | 239,971 | -26,679 | -1.0 |
| 2000 | 243,815 | 3,844 | 0.2 |
Source: U.S. Bureau of Census
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