Homeownership Rate (HR) The homeownership rate in the fourth quarter 2011 (66.0 percent) was lower than the fourth quarter 2010 rate (66.5 percent). The homeownership rates in the Northeast, Midwest, South, and West were not statistically different from their corresponding fourth quarter 2010 rates.
Rental Vacancy Rate (RVR) The rental vacancy rate in the fourth quarter 2011 (9.4 percent) was approximately the same as the fourth quarter 2010 rate (9.4 percent).
Homeowner Vacancy Rate (HVR) The homeowner vacancy rate of 2.3 percent in fourth quarter 2011 was lower than the fourth quarter 2010 rate (2.7 percent).
4th Qtr 2011
(HR): 66.0 percent
3rd Qtr 2011
(HR): 66.3 percent
http://www.census.gov/hhes/www/housing/hvs/hvs.html

