Bairiki is one of the largest towns in South Tarawa. The State House, the National Stadium, the High Commissions of Australia, New Zealand and Taiwan, and most of the Government Ministries are based in Bairiki. Bairiki is administered by the Teinainano Urban Council or TUC. As at the 2010 Census the population of Bairiki was 3,524.
Bairiki is sometimes considered the capital of Kiribati because at one time both the Parliament and the Presidency (and main administrative offices) were located there. However Parliament now meets on Ambo islet, and the various ministries are scattered throughout South Tarawa, from Betio to Bikenibeu.
Bairiki is a small islet, with a land area of less than half a square km. Much of the land is occupied by the Government itself, including the Bairiki National Stadium and the main offices of many of the Government ministries, and by foreign High Commissions with their associated residences. The village community of Bairiki lives in very crowded conditions, and rapid population growth is causing significant problems.