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:
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?”
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| If you live in: | You’re a part of the: |
| Alabama Arkansas* Connecticut Delaware District of Georgia Columbia Florida 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:
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?” |
*For more from DHA, visit their M:M Expert Page.
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