Color		States						Sq Mi
C1 (red)	AL, AZ, CO, DE, ID, IN, MO, NH, RI, SC, TX, WV	783,722
C2 (yellow)	AR, FL, IA, KY, MA, MI, NC, ND, NV, PA, WA, WY	702,351
C3 (green)	CA, CT, GA, IL, MN, MS, MT, NE, NJ, OK, VA, VT	748,240
C4 (blue)	KS, LA, MD, ME, NM, NY, OH, OR, SD, TN, UT, WI	725,174