The country is located on the East African plateau, It averages about 1,100 metres (3,609 ft) above sea level, and this slopes very steadily downwards to the Sudanese Plain to the north. However, much of the south is poorly drained, while the centre is dominated by Lake Kyoga, which is also surrounded by extensive marshy areas.Uganda lies almost completely within the Nile basin. The Victoria Nile drains from the lake into Lake Kyoga and thence into Lake Albert on the Congolese border. It then runs northwards into South Sudan. One small area on the eastern edge of Uganda is drained by the Turkwel River, part of the internal drainage basin of Lake Turkana.
The current estimated population of Uganda is 35 million. Uganda has a very young population, with a median age of 15 years. Uganda has the second highest total fertility rate in the world, at 6.65 children born/woman (2012 estimates). Uganda is home to many different ethnic groups, none of whom forms a majority of the population. The population of Uganda consists of: Baganda 16.9%, Banyakole 9.5%, Basoga 8.4%, Bakiga 6.9%, Iteso 6.4%, Langi 6.1%, Acholi 4.7%, Bagisu 4.6%, Lugbara 4.2%, Banyoro 2.7%, other 29.6%.
According to the census of 2002, Christians made up about 84% of Uganda's population. The Roman Catholic Church has the largest number of adherents (41.9%), followed by the Anglican Church of Uganda (35.9%). Evangelical and Pentecostal churches claim the rest of the Christian population. There's a growing number of Presbyterian denominations like the Presbyterian Church in Uganda, the Reformed Presbyterian Church in Uganda and the Evangelical Free Church in Uganda with hundreds of affiliating congregations. The next most reported religion of Uganda is Islam, with Muslims representing 12% of the population
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