It depends on how you want to look at it. There were either 12. Or there were 14. At the time of the resolution Delaware did not exist. Delaware was still part of Pennsylvania until June 15, 1776 when they delayed their freedom from both British Rule and Pennsylvania. So 12 if you want to look at it that way. However, there were also two colonies in Florida at the time too everyone always forgets about. The colony around St. Augustine is older than the one around Jamestown Virginia by about 40 years. There was East Florida (which is most of that you know as Florida today), and West Florida (which is the panhandle all the way over to New Orleans). However they were loyalists to King George III. So Over time, they were pretty much written out of history.