|ISO3166-1 Codes||UM, UMI, 5811|
“First discovered by the British in 1821, the uninhabited island was annexed by the US in 1858 but abandoned in 1879 after tons of guano had been removed. The UK annexed the island in 1889 but never carried out plans for further exploitation. The US occupied and reclaimed the island in 1935. It was abandoned in 1942 during World War II. [...] Managed by the Fish and Wildlife Service of the US Department of the Interior.”
CIA's The World Factbook (2013)5
As a territory of the USA I do not have many specific statistics for this territory in its own right.
There isn't much information in the database for Jarvis Island, most likely because it is either a part of another country (i.e., a territory or posession) and therefore most international statistics are counted for the country as a whole, or, this is such an exotic place that little data exists about it.