How do I know what region I’m in?

 

Where you live determines your region. Regions only apply to the following health plans:

  • TRICARE Prime
  • TRICARE Prime Overseas
  • TRICARE Select
  • TRICARE Select Overseas
  • TRICARE Young Adult
  • TRICARE Reserve Select
  • TRICARE Retired Reserve
If you live in:   You're a part of the:  

 Alaska
 Arkansas*
 Arizona
 California
 Colorado
 Hawaii
 Idaho
 Indiana*
 Illinois
 Iowa
 Kansas
 Louisiana
 Minnesota
 Missouri*
 Montana
 Nebraska 
 Nevada 
 New Mexico 
 North Dakota 
 Oklahoma
 Oregon 
 South Dakota 
 Texas
 Utah
 Washington
 Wisconsin*
 Wyoming

 West Region

 West Region Contractor:
 TriWest Healthcare Alliance

 1-888-TRIWEST (874-9378)

 https://tricare.mil/west

* There are some ZIP codes in:

  • Arkansas and Wisconsin that are in the East Region.
  • Indiana are in the East Region.
  • Missouri that are in the East Region. 

Check to see if your ZIP code is in the East or West by going to the TRICARE Changes page. In the far-right navigation bar, enter your ZIP code into the tool called “What’s my TRICARE region in 2025?”

 

 

If you live in:  You're a part of the: 
 Alabama
 Arkansas*
 Connecticut
 Delaware
 District of Columbia
 Florida
 Georgia
 Indiana*
 Kentucky
 Maine
 Maryland
 Massachusetts
 Michigan
 Mississippi
 Missouri*
 New Hampshire
 New Jersey
 New York
 North Carolina
 Ohio
 Pennsylvania
 Rhode Island
 South Carolina
 Tennessee
 Vermont
 Virginia
 West Virginia
 Wisconsin*
 

 East Region

 East Region Contractor:
 Humana Military
 1-800-444-5445
 www.tricare-east.com

* There are some ZIP codes in:

  • Arkansas and Wisconsin that are in the West Region.
  • Indiana that are in the West Region.  
  • Missouri that are in the West Region.

Check to see if your ZIP code is in the East or West by going to the TRICARE Changes page. In the far-right navigation bar, enter your ZIP code into the tool called “What’s my TRICARE region in 2025?”

 

 If you live:  You're a part of the:
 Outside of the United States

 Overseas Region

 Overseas Contractor:
 International SOS Government Services, Inc.
 Country-Specific Toll-free Numbers
 www.tricare-overseas.com

 

 


Last Updated 1/2/2025