- Five Largest Cities: Antananarivo, Toamasina, Antsirabe, Mahajanga, Fianarantsoa
- Population of Largest City: 2,050,000
- Estimated size of 2nd, 3rd, 4th, and fifth largest cities respectively using rank size rule:1,025,000; 683,333; 512,500; 410,000
- Actual populations of 2nd, 3rd, 4th, and 5th largest cities respectively: 274,700; 238,500; 220,600; 190,300
- How valid the rank size rule is proven based upon the populations of this country's five largest cities:
- Population: 22,445,000
- Population density: 38
- % Urban Population: 33%
- % Urban population living in slums: 76.2%
- Average % change in urban population: 4.69
- % with improved urban sanitation: 19%
- % with improved urban water supply: 78.2%