| Idama | |
| Coordinates: | 6.7794°N 79.8858°W |
| Area Total Km2: | 0.55 |
| Elevation M: | 11 |
| Elevation Footnotes: | [1] |
| Population Total: | 2826 |
| Population Density Km2: | 5138 |
| Population As Of: | 2012 |
| Population Footnotes: | [2] |
| Subdivision Type: | Country |
| Subdivision Name5: | Moratuwa Polling Division |
Idama Grama Niladhari Division is a Grama Niladhari Division of the Moratuwa Divisional Secretariat of Colombo District of Western Province, Sri Lanka . It has Grama Niladhari Division Code 552.
St. Sebastian's College, Moratuwa, Prince of Wales' College, Moratuwa and Princess of Wales' College are located within, nearby or associated with Idama.
Idama is a surrounded by the Horethuduwa North, Rawathawatta West, Kadalana, Moratuwella North, Uyana South and Rawathawatta South Grama Niladhari Divisions.
The Idama Grama Niladhari Division has a Sinhalese majority (96.0%) . In comparison, the Moratuwa Divisional Secretariat (which contains the Idama Grama Niladhari Division) has a Sinhalese majority (94.3%)[3]
The Idama Grama Niladhari Division has a Buddhist plurality (40.1%), a significant Roman Catholic population (31.8%) and a significant Other Christian population (23.7%) . In comparison, the Moratuwa Divisional Secretariat (which contains the Idama Grama Niladhari Division) has a Buddhist majority (68.2%) and a significant Roman Catholic population (19.8%)[4]