Texas South Dakota portal1980s portalUnited States portalHistory portal This category is for topics specifically related to the year 1986 in the U.S. state of South Dakota. 19811982198319841985198619871988198919901991 1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s2030s Subcategories This category has the following 2 subcategories, out of 2 total. / 1986 establishments in South Dakota (1 P)E 1986 South Dakota elections (3 P)