Ubanization in a country changes its decisions. The last survey of urbanization was conducted in 2012 and it was 18.2 percent at that time.

Urbanization was calculated while considering facts such as population density, supermarkets, clothing centres, filling stations, banks, private schools, the number of private hospitals and the number of storied apartments in a Grama Niladhari area

The percentage of houses on rent or lease and the number of people who engage in employment, except in the agriculture sector in a local council-governed area within a 10-kilometre distance has also been considered in calculations.

According to the survey, Colombo has been identified as having the highest percentage of urban population, which is 96.74 percent, while 76.76 percent were recorded in the Gampaha district.