Saudia Arabia.
Afghanistan is the country with the highest percentage of Muslim population.
Not including Turkey, Kosovo is the European country with the highest Muslim percentage of its population. 89.6% of Kosovo's population is Muslim.
It is estimated that Afghanistan's population is 99.7% Muslim.
Muslim. Indonesia is the highest Muslim population country in the world.
Pakistan (174 millions Muslims population) is the second to Indonesia (203 millions Muslims population) in having the highest Muslims population.
Indonesia (more than 200 million Muslims)
All over the world although with different percentage Muslim population to each country total population.
Indonesia. Muslim population in Indonesia is ~203 millions as of October 2009.
Indonesia is the country with highest number of Muslim population (over 200 million)
India is the country population on Muslim.
The three countries with the highest Muslim populations are, in order:1. Indonesia2. Pakistan3. India (though it's a non-Islamic country)
Indonesia. Muslim population in Indonesia is ~203 millions (88.2% of total population and ~13% of world Muslim population. (per Pew Forum study as of October 2009). See related link below.