Indonesia is the country of largest Muslim population (203 million Muslim as of year 2009), followed by Pakistan (174 million), India (161 million), Bangladesh (145 million) and Egypt (79 million).
Thailand
China
Iran
Spain
Pakistan
India
India has the world's second largest population, after China.
The world's largest country by land area is Russia.
Indonesia - 231.5 million representing 3.4% of the worlds population
China has the largest population in Asia with over 1.4 billion people.
Bismillah (In the name of God) Republic of Indonesia {| ! Country ! Numberof Muslims | Indonesia 170,310,000 Pakistan 136,000,000 Bangladesh 106,050,000 India 103,000,000 Turkey 62,410,000 Iran 60,790,000 Egypt 53,730,000 Nigeria 47,720,000 China 37,108,000 |} source: http://www.adherents.com/largecom/com_islam.htmlIndonesia has the highest Muslim population in the world.hope this helps! :)The largest Muslim country in terms of population is Indonesia. It has 240,271,522 people (July 2009 est.)