The city of Moratuwa is situated on the coastal plain of the west of Sri Lanka on the Indian Ocean in a picturesque strip of land. Lunawa Lagoon is a natural ecosystem located in the city center. The total area of the Moratuwa area is 23.4 square kilometers. As of the 2011/2012 census, the total population was 166,857 and there are 42 Grama Niladhari Divisions.