Tonga (GPS: 20 00 S, 175 00 W) is located in Oceania, an archipelago in the South Pacific Ocean, about two-thirds of the way from Hawaii to New Zealand. The country’s area measurements are total: 747 sq km; land: 717 sq km, water: 30 sq km. This sovereign state is four times the size of Washington, DC. The total irrigated land is 0 sq km (2012).
One of the crucial features of Tonga: The western islands (making up the Tongan Volcanic Arch) are all of volcanic origin. The eastern islands are nonvolcanic and are composed of coral limestone and sand.