I'm thinking it was West Virginia. Not counting territories that were divided.
Before WV it was Maine from Massachusetts.
It's been a long time. Reorginization of political boundaries hasn't been common in recent history, aside from a new county in Colorado and some local government consolidation. The will for such major changes is lacking from our staid status quo universe. If I were dictator I'd have a top to bottom review of all levels of government, splitting up states and counties like nobodies business. ;)
Los Angeles went through quite a battle a few years ago. To split, or not to split?
Those wanting to split lost, obviously.
Florida ceded lands to Alabama as part of the resolution of the resolution of the Flora-Bama Lounge and Package conflict. The bar, which originally was in Florida, now lies within Alabama’s border.
http://en.wikipedia.org/wiki/Flora-Bama
My bad. Florida retained the bar, Alabama got the land accessing the bar.
“If I were dictator I’d have a top to bottom review of all levels of government, splitting up states and counties like nobodies business. ;) “