Answer:
The University of Connecticut Libraries list the following as United States Territories:
American Samoa
Baker Island -- (uninhabited, administered from Washington, DC)
Federated States of Micronesia ( In 1979 they adopted a constitution, and in 1986 independence was attained under a Compact of Free Association with the United States.
Guam
Howland Island -- (uninhabited, administered from Washington, DC)
Jarvis Island -- (uninhabited, administered from Washington, DC)
Johnston Atoll -- (under the jurisdiction of the U.S. Air Force)
Kingman Reef -- (uninhabited, under the jurisdiction of the U.S. Navy)
Commonwealth of the Northern Mariana Islands
Midway Islands -- (under the responsibility of the US Fish & Wildlife Service)
Navassa Island -- (uninhabited, administered from Washington, DC)
Palmyra Atoll -- (uninhabited, under the responsibility of the U.S. Dept. of Interior)
Puerto Rico
U.S. Virgin Islands
Wake Island -- (under the jurisdiction of the U.S. Air Force)