Informative Wall Street Journal article by Anne Tergesen regarding the age that is best for you to claim Social Security. The gist for most retirees is that they are going to be better served delaying Social Security until full retirement age or later. Although to determine the best strategy for you it is worth hiring an independent financial advisor.
http://blogs.marketwatch.com/encore/2013/04/23/claiming-social-security-should-you-wait/tab/print/
Also a link, that was mentioned in the article, is pasted below to Social Security's web site that shows when you are entitled to full retirement (Full retirement age is the age at which a person may first become entitled to full or unreduced retirement benefits.)
http://www.ssa.gov/retire2/retirechart.htm
Related Blog Post:
Taking Social Security Too Soon Can Cost You