Bangkok is the largest city in the country, covering approximately 1,568 square kilometres.
According to official statistics, Bangkok’s population is more than 5 million.
However, it is generally known that about 30 per cent of Bangkok’s residents are not registered because of their mobility between the city and the provinces.
The actual population size of Bangkok is believed to be about 7-10 million.
Bangkok-centred economic growth in the past 4 decades resulted in massive urbanization.
It has become what is known as a primate city: the largest in the country consuming most of the country’s resources.