Below is a link to an interesting article I found from the CNN Law Center about the death penalty imposed on juveniles. The article is dated Tuesday, March 1, 2005 Posted: 11:29 AM EST (1629 GMT). After some research, the article appears to still be valid.
What I found interesting is that while 31 states have no death penalties for juveniles, the following states have no statutes prohibiting the death penalty for juveniles:
California, Colorado, Connecticut, Illinois, Indiana, Kansas, Maryland, Missouri, Montana, Nebraska, New Jersey, New Mexico, New York, Ohio, Oregon, S. Dakota, Tennessee, Washington, Wyoming.
http://www.cnn.com/2005/LAW/03/01/juvenile.death.stats/index.html
Also, below is a link to the Death Penalty Information Center:
http://www.deathpenaltyinfo.org/state/