Nationally, the rate of homeownership continued a multi-year decline in the fourth quarter of 2012, according to data released by the U.S. Census. Homeownership was down a tenth of a percent to 65.4 percent. The rate has dropped almost four percent from its peak of 69.2 in the fourth quarter of 2004.
The Census did not release new state-by-state data, but South Dakota has been among only a handful of states to see homeownership rates rise since 2004. A comparison of state-by-state trends through 2010 is available here.
We have an infographic of county-by-county homeownership rates in the Black Hills in 2009 on the Black Hills Knowledge Network.