Administrative divisions of Tonga

The island country of Tonga has five levels of administrative divisions. Each of these is further divided into a total of 23 districts. Below are several lists of the divisions, according to different sorting schemes.
By Districts.
Notes.
Minerva Reefs is generally considered to be a part of Tonga. It never formed part of any administrative subdivision or district of Tonga.
Area stats.
The districts of Tonga have the following statistical info: 
the average size of a district is 31.7 km2, while the median area is 0.0 km2. the size of these districts is predominantly dependent on the land area of the islands they occupy.
Population stats.
The districts of Tonga have the following statistical info: 
The average district population is 4,500, while the median is 0.
According to official data from the 2011 Tonga we had over 20 cities with a population in excess of 200 inhabitants. The country's capital Nuku'alofa is the only city had a population of over 20000 residents; 2 city with a population of 1 ÷ 5 thousand. and the rest of the cities of less than 1000. residents.
Sources :