7 Stakes created in Mar, Apr 2013 (Mexico, UT, PA, WY, AZ)

Two new stake were created in Utah.  There are now 563 Stakes in Utah and 14 temples. (with three more under construction)

One new stake was created in Pennsylvania.  There are now 11 Stakes in Pennsylvania and a temple in Philadelphia under construction)

One new stake was created in Wyoming.  There are now 17 Stakes in Wyoming and a temple in Star Valley under construction)

Two new stake were created in Mexico.  There are now 227 Stakes in Mexico and 12 temples. (with one more under construction)

One new stake were created in Arizona.  There are now 95 Stakes in Arizona and 3 temples. (with three more under construction)

6. South Jordan Utah Oquirrh Lake - March 3rd, 2013
7. Lehi Utah Jordan Willows - March 24th, 2013
8. Lancaster Pennsylvania - March 24th, 2013
9. Cheyenne Wyoming East - April 21st, 2013
10. Córdoba México - April 21st, 2013
11. Gilbert Arizona Williams Field - April 28th, 2013
12. Mexico City Alamedas - April 28th, 2013

http://ldschurchgrowth.blogspot.com/

Map of Lancaster Pennsylvania Stake Boundaries