Western Region
WA, OR, CA, NV, ID, MT, WY, UT, AZ, AK, HI
North Central Region
ND, SD, NE, CO, KS, MO, IA, MN, WI, IL
South Central Region
NM, OK, TX, AR, LA
Mid-Atlantic Region
MI, IN, KY, TN, WV, NC, OH, VA, MD, DC, DE
Northeast Region
NY, PA, VT, ME, NH, CT, RI, NJ
Southeast Region
MS, AL, GA, SC, FL, PR, VI
Note - BOP has 6 regions as of May 2009. For additional information on regional operations, see its website.