- Quita Sueño Bank, Roncador Cay, and Serrana Bank
- These islands were mentioned, but not enumerated, in the 1950 and 1960 censuses. A December 1973 treaty recognized Colombia’s sovereignty over them.
- The Swan Islands
- The 1950, 1960, and 1970 censuses reported population counts for these islands. Sovereignty over the Swan Islands passed to Honduras on September 1, 1972, under the terms of a treaty signed on November 2, 1971.
The Pacific area consists of the following:
- Baker, Howland, and Jarvis Islands
- These islands have been administered by the Department of the Interior since 1936, and have served as wildlife refuges under the jurisdiction of the U.S. Fish and Wildlife Service since 1974. Population counts for these islands were reported as part of Hawaii for the 1940 census. Subsequently, they have been reported as a separate, single unpopulated entity.
- Canton and Enderbury Islands
- Population counts for these islands were reported as part of Hawaii for the 1940 census, and as a separate area in 1950 and 1960, when Canton Island was important as a stopover on Pacific air routes. The 1970 and 1980 censuses reported no population. The United States signed a treaty on September 20, 1979, relinquishing the islands to Kiribati, which took possession in June 1983.
- Johnston Atoll (four small islands)
- Referred to in some censuses as Johnston Island and Sand Island, Johnston Atoll was annexed by the United States in 1856, and is administered by the Defense Nuclear Agency under a 1973 agreement with the U.S. Air Force. It was reported as part of Hawaii for the 1940 census; its population counts—only Johnston Island is inhabited—have been reported separately starting with the 1950 census.
- Kingman Reef
- Kingman Reef was annexed to the United States in 1922, and has been under the jurisdiction of the U.S. Navy since 1934. It was mentioned, but7-4Puerto Rico and the Outlying Areas
