The Mexican state of Chihuahua is divided into 67 municipalities. According to the 2015 Mexican Intercensal Survey, Chihuahua is the 11th most populous state, with 3,556,574 inhabitants, and the largest by land area, spanning 247,798.08 square kilometres (95,675.37 sq mi). Municipalities in Chihuahua are administratively autonomous of the state, according to the 115th article of the 1917 Constitution of Mexico. Every three years, citizens elect a municipal president (Spanish: presidente municipal) by a plurality voting system who heads a concurrently elected municipal council (ayuntamiento) responsible for providing all the public services for their constituents. The largest municipality by population is Ciudad Juárez (pictured), Mexico's fifth largest municipality, with 1,391,180 residents or approximately 39.1 percent of the state population. The smallest municipality by population is Huejotitán, with 952 residents. (Full list...)