Why has South Tarawa grown much faster than many outer islands of Kiribati?

South Tarawa has experienced significantly faster population growth than the outer islands of Kiribati primarily due to migration toward its urban centers.1

As the capital and administrative hub of the country, South Tarawa serves as the primary commercial and educational center. It offers an extensive wage economy, whereas the populations of the outer islands remain largely engaged in subsistence farming and small-scale production of copra or handicrafts.2314

The concentration of essential infrastructure and services in South Tarawa—including port facilities, major airport access, and the national government headquarters—has made it the focal point for development and employment opportunities. Consequently, while the population on most outer islands has remained relatively static, more than two-fifths of the total population of Kiribati now resides in the densely populated urban area of South Tarawa.241