After reading this article, the contributor suggests that the Al-Rashid mosque in Canada is the oldest mosque in North America.
After doing some quick research, in fact it is not. It’s actually the “Mother Mosque of America.” The Mother Mosque of America, once known as The Rose of Fraternity Lodge and also known as Moslem Temple, in Cedar Rapids, Iowa, United States, is the longest standing mosque in North America. Built in 1934, it is the second oldest after the 1929 mosque built in tiny Ross, North Dakota, however that mosque was torn down in the 1970s and later rebuilt in 2005, leaving the Mother Mosque as the oldest standing. It is also slightly older than the Al-Rashid Mosque in Edmonton, Alberta, Canada.