Statistics for Islam in Dominica are not readily available. According to the International Religious Freedom Report in 2005, followers of minority religions and denominations, which range in number from 1.6 percent to 0.2 percent of the population, include Rastafarians, Jehovah's Witnesses, Anglicans, and Muslims. The Muslim community, which consists mostly of foreign students at the Ross Medical School, financed the 2004 construction of a mosque in Portsmouth. The islands known Islamic organizations include the Muslim Community of Dominica in Roseau and the Association of Muslim Students at the Ross University School of Medicine in Portsmouth.

Source http://en.wikipedia.org/wiki/Islam_in_Dominica