Thoughts on these American culture zones

[bedstuy]

New York zone:  Take out some of the western counties (western NY, Eastern PA) and add more of CT.  Connecticut is connected to NYC via Amtrak and Metro North so it's more a part of New York.  Certainly add New Haven to the New York zone.

Texas:  Yikes.  Arizona and Western NM are not a part of the Texas culture.  Texas is the South.  People talk with a southern accent and it's a historical part of the slave-holding South.  Arizona and NM are the Southwest.  I would have a zone that's the Southwest which include all of Arizona and some/all of New Mexico, and parts of Utah, Nevada, and Colorado. 

[bedstuy]

East Texas and the Coastal Bend are the South. The rest of Texas is not. I agree that it's weird to call the Southwest region "Texas" though...

You definitely can't lump them all under the headline Texas.  Maybe it's best to break it up into three regions. 
1. "The Border": Yuma, Nogales, Douglas, Las Cruces, El Paso, McAllen, Laredo, etc.  Maybe include San Antonio in that area.

2. Lubbock, Abilene, Odessa, Amarillo, "West Texas" lumped in with Oklahoma.

3. The rest of Texas