Region V

Alaska Branch 

This territory includes all zip codes in the state of Alaska.

Illinois Branch ASM (Illinois Society for Microbiology)

This territory includes all zip codes in the state of Illinois.

Missouri Branch

This territory includes all zip codes in the state of Missouri.

North Central Branch 

This territory includes all zip code areas in the states of Iowa, Minnesota, North Dakota, South Dakota, and Wisconsin.

Northwest Branch

This territory encompasses all zip codes in the states of Montana, Oregon, and Washington; Idaho zip code areas 83500-83599, 83800-83899; and British Columbia.