Of the 19 teams named after a state (not counting teams with a state name followed by state, for example New Mexico counts but not New Mexico State) only 9 teams remain:
Kentucky, Indiana and Colorado in the South Region
New Mexico, Florida in the West Region
Wisconsin in the East Region
North Carolina, Ohio and Kansas in the Midwest Region
There is a possibility of bordering states reaching the Final Four: Ohio-Indiana or Ohio-Kentucky.
Wisconsin teams have yet to lose a game. Marquette and Wisconsin.
The last two national champs, Connecticut and Duke are out of the tournament. The runner up the last two years, Butler, didn’t even make the tournament. Of the Final Four teams from 2011, after VCU’s loss to Indiana, only 1 remains: Kentucky.
There are just 4 teams named after cities left in the tournament:
Cincinnati and Syracuse in the East Region
St. Louis and Louisville in the West Region
An intriguing Final 4 would be Louisville, Kentucky, Cincinnati, Ohio.
Of the 5 NC teams, only two remain: NC and NC State
None of the 4 California teams advanced to the Sweet 16.
The 4 Ohio teams are undefeated, but only 1 has advanced to the Sweet 16. 3 Ohio teams play today for the right to join Ohio State. It is possible that 3 of the 4 Ohio teams could reach the Final Four: Lehigh, Ohio, and either Ohio State or Cincinnati.
Playing in Greensboro, North Carolina has a decisive and arguably unfair advantage over Creighton.