In 2000 the population was 33,892.
There would be more people there now if it was not for the unions.
(Copper mining at the turn of the century was the HUGE employer, eventually it faded and the population went elsewhere - FYI.)
Same for Duluth, MN and Superior, Wisconsin. Duluth was expected to grow to about 300 thousand people and Superior around 250 thousand people and probably outstrip or rival MPLS/STPL as the major metro area in the Upper Midwest. It’s a good thing they didn’t though, could you imagine liberal MN with 15-20 electoral votes instead of 10?