Kiribati sits on thirty-three atolls across 3.5 million square kilometers of the central Pacific Ocean, making it one of the most dispersed nations on earth. The Gilbert Islands, Phoenix Islands, and Line Islands stretch across both hemispheres and straddle the equator and the International Date Line. Kiritimati, known as Christmas Island, measures 388 square kilometers and holds the distinction of being the largest coral atoll by land area in the world. The Phoenix Islands Protected Area, designated a UNESCO World Heritage Site in 2008, covers 408,250 square kilometers of marine environment. This represents one of the largest marine protected areas globally and contains pristine coral reef ecosystems largely unaffected by human activity.
The atolls rise only one to three meters above sea level on average. No point in Kiribati exceeds five meters elevation. Tarawa Atoll, where South Tarawa serves as the capital, consists of a narrow strip of land encircling a lagoon. In some places the land width measures less than 400 meters between ocean and lagoon. Banaba stands as the exception, a raised coral island reaching eighty-one meters at its highest point. British and Australian companies mined phosphate on Banaba from 1900 to 1979, removing approximately twenty million tons of phosphate rock and leaving the island's interior heavily degraded.
Kiribati sits 4,000 kilometers southwest of Hawaii and 2,500 kilometers north of New Zealand. The nearest large landmass is Australia at approximately 4,000 kilometers. Fiji lies roughly 2,200 kilometers to the south. This isolation defines access to the country. Fiji Airways operates flights from Nadi to Tarawa twice weekly, a journey of approximately three hours. Kiribati Airlines, also known as Coral Sun Airways, provides irregular inter-island service dependent on aircraft availability and weather conditions. Kiritimati receives flights from Honolulu via Fiji approximately once per week, though schedules change frequently.
The population reached approximately 131,000 in the 2020 census. More than half live on South Tarawa, where population density exceeds 3,000 people per square kilometer in some areas. Betio, a small islet on Tarawa measuring approximately 1.5 square kilometers, houses over 15,000 residents. This concentration creates infrastructure strain visible in crowded housing, limited freshwater resources, and sanitation challenges. The outer islands maintain dramatically lower populations, with some atolls hosting fewer than 200 permanent residents.
I-Kiribati people, also called Gilbertese, constitute the dominant ethnic group. Gilbertese, known locally as te taetae ni Kiribati, serves as the national language alongside English. The language belongs to the Micronesian branch of the Austronesian language family. Gilbertese uses a modified Latin alphabet and contains distinct phonetic characteristics including the letters ti and ng as single consonants. English functions in government and education, but daily life on the outer islands proceeds entirely in Gilbertese. Visitors without Gilbertese language skills face communication barriers outside South Tarawa.
Christianity dominates religious practice. The Roman Catholic Church claims approximately fifty-five percent of the population, while the Kiribati Uniting Church, formed from Congregationalist missionaries, accounts for roughly thirty-three percent. The Church of Jesus Christ of Latter-day Saints and the Baháʼí Faith maintain smaller followings. Traditional spiritual practices involving ancestral spirits have largely integrated into Christian frameworks rather than disappeared. Te Aba Tabu, sacred meeting grounds on various islands, retain cultural significance for community gatherings and dispute resolution.
The Battle of Tarawa occurred in November 1943 between United States Marines and Japanese forces. Over 76 hours, more than 6,000 men died on Betio, including 1,696 US Marines and nearly 5,000 Japanese and Korean laborers. Red Beach on Betio marks where Marines landed under heavy fire. Concrete bunkers, gun emplacements, and rusted artillery remain visible throughout Betio. The seawall where Marines took cover still stands. Military historians regard Tarawa as one of the most concentrated battles in the Pacific theater. Wreckage from landing craft lies in the lagoon waters offshore.
Britain established the Gilbert and Ellice Islands Colony in 1916. The United States conducted nuclear weapons tests on Kiritimati and Malden Island between 1957 and 1962, detonating twenty-four devices as part of Operation Grapple and Operation Dominic. The United Kingdom had previously conducted nine nuclear tests on Malden and Kiritimati from 1957 to 1958. I-Kiribati workers and British servicemen received radiation exposure during these tests. Kiribati gained independence from Britain on July 12, 1979, with Ieremia Tabai becoming the first president.