What is the majority in iran shia or sunni?
Yes. 90% of Iran population are shia Muslims and Iran is the
most Important and leader country of Shia Muslims.
Muslims in world are near 80% sunni and near 20% shia.
researchers have counted up to 260 sect for Islam that they all
belong to categories Sunni and shia. the main category of Shia is
12 Imami shia and other sects of shia are nearly extincted.
there is at least 300,000,000 shia Muslims in world, but there
is no clear stat. shias always have been controlled and killed
during history and so usually they hide their beliefs. all 12 Imams
of shia have been killed or spent their life in prison by Omayyads
and Abbasids.
Shiites believe the 11th Imam is killed. Comments are hidden,
and one day of the twelfthImam will appear. Only God knows the time
of the Twelfth Imam.