Minnesota
Note: 552 is unassigned.
- St. Paul (550-551, Wisconsin 540)
- Minneapolis (553-555)
- Duluth (556-558)
- Rochester (559)
- Mankato (560)
- Windom (561)
- Willmar (562)
- St. Cloud (563)
- Brainerd (564)
- Detroit Lakes (565)
- Bemidji (566)
- Thief River Falls (567)
Read more about this topic: Sectional Center Facility (SCF)