Dear Snakalp and others, Growth rate of muslim population is about 0.6% higer compared to rest of the population. You can check that out yourself. Muslim population was about 13.5% in 2001 census. During partition it was around 12% and not 7% as some people mentioned. The higher birth rate can mostly be attributed to lack of education and backwardness. Conversion plays a very insignificant role. On a surprising note, female population in India increaed by 0.3% in 2001 census. This is attributed to female education and awareness.