 Mignon initially became an incorporated town (according to the 1920 U.S. Census) around 1915, but either disincorporated or lost its charter in the 1930s and did not show on the 1940 U.S. Census.Because (as of 1950) it still was a sizeable community of 3,000 residents, it was listed on the 1950 through 1970 census rolls as an unincorporated community.Beginning in 1980, it received the new status of census-designated place (CDP).