In my opinion, and I know I've mentioned this before in one of the general forums, it was a mistake for this forum to divide states between regions. There is a lot of information that applies statewide and would be best if Ohio remained in one region and not split in two.
Ditto for IN, IL and PA which is split with the Northeast region.
But as the forum has now existed for a number of years, it would be difficult to reorganize all of the old threads to fit in a new nomenclature, so the divisions that exist will remain.
My division would be:
New England
Mid-Atlantic: NY, NJ, PA
DelMarVa: DE,MD,VA,WV,DC
Southeast: NC,SC,GA,FL,AL,MS,TN,KY
Mid-south: AR,LA,OK,TX
Midwest: OH,IN,IL,MI,WI
Plains: ND,SD,NE,KS, MO, IA, MN
Mountain West: ID,MT,WY,UT,CO,AZ,NM,NV
Pac Coast: AK,HI,WA,OR,CA