 As of the 2012 census, 51.7 percent of residents were male.The Rwanda Environment Management Authority hypothesised that the high male-to-female ratio was due to a tendency for men to migrate to the city in search of work outside the agricultural sector, while their wives remained in a rural home.The population is young, with 73 percent of residents being less than 30 years old, and 94 percent under the age of 50.