Ethnic Groups: In 1989 census, Armenians 93.7 percent, Azerbaijanis 2.6 percent, Kurds 1.7 percent, Russians 1.6 percent, and other 0.4 percent. ( Library of Congress)

In Armenia, almost all Azeris and Kurdis are Muslim. So, we can conclude that , the total percentage of Muslim in Armenia is around 4%.