Location of the Kaduwela City
The Kaduwela Municipal Council division belongs to the Colombo administrative District. It is boundaries are as follows:
|North||The Kelani River|
|East||Nakadamulla Canal/ Digala Deniya Outer Canal|
|South||Puwakgahadeniya Tract/ Medi-ela/ Banadaradeniya|
|West||Sri Lanka-Japan Friendship Road/ Diyawanna Oya canal/ Diyawanna Swamp|
It wields first place in terms of size, with an area of 87.71 square kilometres including the reservoirs, water courses and bodies. It is 13.4% of the area of Colombo District. By the end of the year 2016, the total population of the area was reported as 260,341.