Source Data Reference for:

City = Colombo
Time = 2000

City Year Size Size Comment Year Comment Author Title Location
Colombo1975 850,000Tertius ChandlerFour thousand years of urban growthp512
Colombo2011 2,115,000n/ahttp://demographia.com/
Colombo2012 2,145,000n/aDemographia Wolrd Urban Areas 8th Annual Edition Version 2