Question: what was the last season of jersey shore
Answer: Season Episodes Originally aired First aired Last aired 9 December 3 , 2009 ( 2009 - 12 - 03 ) January 21 , 2010 ( 2010 - 01 - 21 ) 13 July 29 , 2010 ( 2010 - 07 - 29 ) October 21 , 2010 ( 2010 - 10 - 21 ) 13 January 6 , 2011 ( 2011 - 01 - 06 ) March 24 , 2011 ( 2011 - 03 - 24 ) 12 August 4 , 2011 ( 2011 - 08 - 04 ) October 20 , 2011 ( 2011 - 10 - 20 ) 5 11 January 5 , 2012 ( 2012 - 01 - 05 ) March 15 , 2012 ( 2012 - 03 - 15 ) 6 13 October 4 , 2012 ( 2012 - 10 - 04 ) December 20 , 2012 ( 2012 - 12 - 20 )