In 1991, the national population census estimated the district population at about 289,500. The national census in 2002 estimated the population of the district at about 387,600, with an annual population growth rate of 2.7%. In 2012, the population of Jinja District was estimated at approximately 501,300. The table below illustrates the population growth in the district, between 2002 and 2012. All figures are estimates.
Jinja District is part of Busoga sub-region, which includes the districts listed below, and was home to an estimated 2.5 million people in 2002, according to the national census. The majority of the people in Jinja District belong to the Basoga ethnic group and Lusoga is the most widely spoken language. The districts in the sub-region include the following: