| California | CA |
| Central Plains | IA NE KS MO |
| Great Lakes/No. Central | IL MI MN WI |
| Mid-Atlantic | DC MD DE VA |
| Mid-Central | OH IN KY WV |
| New England | ME MA NH RI VT |
| North Plains | ID ND SD MT WY |
| Northeast | CT NJ NY PA |
| Northwest | AK OR WA |
| Rockies/Southwest | AZ CO NM NV UT |
| South Central | AR LA OK TX |
| Southeast | AL FL GA MS NC SC TN |