Texas has the eighth-largest Muslim population in the United States. In 1990 there were approximately 140,000 Muslims in Texas, which represented 0.7 percent of the state population and 2.8 of the total Muslim population in the United States. Most Muslims are concentrated in the urban centers of the state. Houston has some twenty-two Islamic centers and mosques and a Muslim population of 57,000, and Dallas has fifteen centers and 30,000 Muslims. The Muslim population is 4,000 in Fort Worth and 3,000 in Arlington. Austin and San Antonio each have 5,000, El Paso has 1,500, and there are small Muslim communities in Bryan-College Station, Corpus Christi, and Kingsville. Among the more prominent Islamic organizations in the state are the Muslim Students Association, the Islamic Society of North America, the Muslim Arab Youth Association, the Islamic Circle of North America, and the Al Quaran-Was-Sunnah Society. From 2000 to 2010 the percentage of Muslims in Texas increased from 0.55 percent to 1.68 percent, and Texas ranked first in nation with an estimated 421,972 Muslims.