There have been many tornadoes in Arkansas. However, given the timing, you presumeably mean the tornado that struck the towns of Mayflower and Vilonia on April 27, 2014. That tornado killed 16 people.
There were no tornado-related deaths in Illinois in 2011.
The Goderich, Ontario tornado of 2011 killed 1 person.
If you mean the Sedalia, Missouri tornado of May 25, 2011, there were no deaths from that particular tornado.
The tornado that hit Smithville, MS on April 27, 2011 killed 23.
In 2011 tornadoes killed 570 people, 553 in the U.S.
158 people were killed by the Joplin tornado. Another tornado on the same day killed 1 person in the Minneapolis area.
The Tuscaloosa, Alabama tornado of April 27, 2011 killed 64 people, making it the second deadliest tornado in Alabama history. Another tornado hit Tuscaloosa on December 16, 2000, killing 11 people.
No tornado hit Joplin, Missouri in 2012. However, Joplin was devastated by an EF5 tornado on May 22, 2011. That tornado directly killed 158 people, the deadliest to hit the U.S. since 1947. Three or four other people died due to indirect effects.
The Xenia, Ohio tornado of 1974 killed 32 people directly. Two others died from indirect effects of the tornado.
The Kirksville, Missouri tornado of May 13, 2009 killed 2 people.
Nobody in Texas was killed in any tornadoes in 2011. As of September of 2012 the last tornado related death in Texas was in 2007.