Island Areas 101

ASTHO's members include the chief health officials of the five U.S. territories and three freely associated states (FAS). These eight jurisdictions are collectively referred to as the island areas or island jurisdictions.

Each island jurisdiction has a unique history, culture, government structure, and relationship with the United States. When working with the island areas, it is important to understand the differences among and between island jurisdictions and the contiguous United States.

Sovereignty is a significant difference between the U.S. territories and FAS. The FAS are independent nations connected to the U.S. through the Compacts of Free Association, under which the U.S. government agreed to provide economic and technical assistance, ensure U.S. military defense support, and allow unrestricted travel to and from the United States for these non-resident FAS citizens. In return, the FAS agreed to give the U.S. Government unlimited and exclusive use of their land and waterways for strategic purposes. The U.S. territories are under the jurisdiction of the U.S. government, and territorial residents are U.S. citizens or nationals.

Other distinctions include citizenship and differences in federal program and funding eligibility such as Medicaid, Medicare, SSI, and Veterans Affairs. The chart on this page summarizes these differences in political status, citizenship, visa requirements, and Medicaid and Medicare eligibility between the island jurisdictions.

Take It To Go

A PDF version of the island jurisdiction profiles is available for download.

Get the PDF

Table 1: Territories and Freely Associated States

Jurisdiction Flag Political Status U.S. Citizens? Vote for U.S. President? Reside/Work/Travel in U.S.? Medicaid/Medicare Eligible? Serve in U.S. Military?
Puerto Rico Flag of Puerto Rico Territory Yes No Yes Yes, capped Yes
USVI Flag of the U.S. Virgin Islands Territory Yes No Yes Yes, capped Yes
Guam Flag of Guam Territory Yes No Yes Yes, capped Yes
American Samoa Flag of American Samoa Territory No (U.S. Nationals) No Yes Yes, capped Yes
CNMI Flag of the Commonwealth of the Northern Mariana Islands Territory Yes No Yes Yes, capped Yes
RMI Flag of the Republic of the Marshall Islands Sovereign (except military) No No Yes No (migrants in U.S.: yes, 2021) Yes
FSM Flag of the Federated States of Micronesia Sovereign (except military) No No Yes No (migrants in U.S.: yes, 2021) Yes
Palau Flag of the Republic of Palau Sovereign (except military) No No Yes No (migrants in U.S.: yes, 2021) Yes

Health in the Island Areas

Each island jurisdiction has its own unique context and needs, which are important to understand when partnering with them. To learn more about a jurisdiction's health system, history, and relationship with the U.S., click on the corresponding links below.
American Samoa flag

American Samoa

Learn More
Commonwealth of the Northern Mariana Islands flag

Commonwealth of the Northern Mariana Islands

Learn More
Federated States of Micronesia flag

Federated States of Micronesia

Learn More
Guam flag

Guam

Learn More
Puerto Rico flag

Puerto Rico

Learn More
Palau flag

Republic of Palau

Learn More
Republic of the Marshall Islands flag

Republic of the Marshall Islands

Learn More
United States Virgin Islands flag

United States Virgin Islands

Learn More