Administrative divisions:

3 geographical units: Gilbert Islands, Line Islands, Phoenix Islands; there are no first-order administrative divisions, but the 6 districts are Banaba, Central Gilberts, Line Islands, Northern Gilberts, Southern Gilberts, Tarawa, with 21 island councils on Abaiang, Abemama, Aranuka, Arorae, Banaba, Beru, Butaritari, Kanton, Kiritimati, Kuria, Maiana, Makin, Marakei, Nikunau, Nonouti, Onotoa, Tabiteuea, Tabuaeran, Tamana, Tarawa, Teraina

Definition:

This entry gives the numbers, designatory terms, and first-order administrative divisions as approved by the US Board on Geographic Names (BGN). Changes that have been reported but not yet acted on by the BGN are noted. Geographic names conform to spellings approved by the BGN with the exception of the omission of diacritical marks and special characters.

Source: CIA World Factbook