Dehiwala-Mount Lavinia, population 245,974 (2012) is the largest suburb of the City of Colombo, and covers an extent of 2109 hectares. It lies south of the Colombo Municipal Council area and separated from it by the Dehiwala canal which forms the northern boundary of DMMC. Its southern limits lie in Borupana Road and the eastern boundary is Weras Ganga with its canal system and including some areas to its east. This town has extensive population and rapid industrialization and urbanization in recent years. It is home to Sri Lanka's National Zoological Gardens, which remains one of Asia's largest. Colombo South Teaching Hospital, Kalubowila and Colombo Airport, Ratmalana are some important landmark in this area. Dehiwela-Mount Lavinia and Sri Jayawardenapura Kotte being two large suburban centers of the city of Colombo function together as one large urban agglomeration in the Region. The overspill from the City in residential and commercial uses of land have rapidly urbanised these suburban centers. Dehiwela-Mount Lavinia and Sri Jayawardenpaura along with Colombo Municipal Council form the most urbanized part of the core area of the Colombo Metropolitan Region. Dehiwala and Mount Lavinia lie along the Galle Road artery, which runs along the coast to the south of the country.
Gampaha District is one of the 25 districts of Sri Lanka, the second level administrative division of the country. It is the second most populous district of Sri Lanka after Colombo District. The district is administered by a District Secretariat headed by a District Secretary appointed by the central government of Sri Lanka. The capital of the district is the town of Gampaha. Negombo however is the largest city and the commercial hub of Gampaha district. The district was carved out of the northern part of Colombo District in September 1978.
Kalutara District is one of the 25 districts of Sri Lanka, the second level administrative division of the country. The district is administered by a District Secretariat headed by a District Secretary appointed by the central government of Sri Lanka. The capital of the district is the town of Kalutara.
Kolonnawa is a suburb of Colombo city, in Colombo District, Western Province of Sri Lanka.
Ratmalana is a suburb in Colombo District, Western Province, Sri Lanka. It is inside the administration boundary of Dehiwala-Mount Lavinia Municipal Council. Ratmalana Airport is located here.
Dehiwala Divisional Secretariat is a Divisional Secretariat of Colombo District, of Western Province, Sri Lanka.
Homagama Divisional Secretariat is a Divisional Secretariat of Colombo District, of Western Province, Sri Lanka.
Kaduwela Divisional Secretariat is a Divisional Secretariat of Colombo District, of Western Province, Sri Lanka. This divisional Secretariat also encompasses the area of the Kaduwela polling division.
Kesbewa Divisional Secretariat is a Divisional Secretariat of Colombo District, of Western Province, Sri Lanka.
Kolonnawa Divisional Secretariat is a Divisional Secretariat of Colombo District, of Western Province, Sri Lanka.
SRI JAYAWARDHANAPURA KOTTE Divisional secretariat within Colombo District in the Western province, is larger than Dehiwala, Rathmalana and Moratuwa Divisional Secretariats. The total extent utilized lands in Gramaniladhari divisions is about 1523 hectares. It consists of 20 GS divisions bounded on Kolonnawa and Kaduwela Divisional secretariats by north and east, Maharagama and Thimbirigasyaya Divisional Secretariats by south and west. This area is to be considered as Sri Jayawardenepura Kotte Municipal council area as well.
Moratuwa Divisional Secretariat is a Divisional Secretariat of Colombo District, of Western Province, Sri Lanka.
Padukka Divisional Secretariat is a Divisional Secretariat of Colombo District, of Western Province, Sri Lanka.
Ratmalana Divisional Secretariat is a Divisional Secretariat of Colombo District, of Western Province, Sri Lanka.
Seethawaka Divisional Secretariat is a Divisional Secretariat of Colombo District, of Western Province, Sri Lanka.
Thimbirigasyaya Divisional Secretariat is a Divisional Secretariat of Colombo District, of Western Province, Sri Lanka.
