Aguascalientes is a state in North Central Mexico that is divided into eleven municipalities. According to the 2015 Mexican Intercensal Survey, Aguascalientes is the sixth least populous state with 1,312,544 inhabitants and the fourth smallest by land area spanning 5,630.27 square kilometres (2,173.86 sq mi).
Municipalities in Aguascalientes are administratively autonomous of the state according to the 115th article of the 1917 Constitution of Mexico. Their legal framework derives from the state Constitution and the 2003 Municipal Law for the State of Aguascalientes. 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 municipal council consists of a variable number of trustees and councillors (regidores y síndicos). Title 9 of the Municipal Law provides for the establishment of unipersonal auxiliary authorities (autoridades auxiliares) to represent local communities in the municipalities.
Municipalities are responsible for public services (such as water and sewerage), street lighting, public safety, traffic, supervision of slaughterhouses and the maintenance of public parks, gardens and cemeteries. They may also assist the state and federal governments in education, emergency fire and medical services, environmental protection and maintenance of monuments and historical landmarks. Since 1984, they have had the power to collect property taxes and user fees, although more funds are obtained from the state and federal governments than from their own income.
The largest municipality by population is the state capital Aguascalientes, with 877,190 residents or approximately 66.8% of the state population. The smallest municipality by population is San José de Gracia with 8,896 residents. The largest municipality by land area is also Aguascalientes which spans 1,181.24 km2 (456.08 sq mi), and the smallest is Cosío which spans 130.07 km2 (50.22 sq mi). The first municipality to incorporate was Asientos on January 1, 1797 and the newest municipality is San Francisco de los Romo which incorporated March 1, 1992.
|Change||Land area||Population density||Incorporation date|
|Aguascalientes||Aguascalientes||877,190||797,010||+10.1%||1,181.24||456.08||742.6/km2 (1,923.3/sq mi)||January 17, 1825|
|Asientos||Asientos||46,464||45,492||+2.1%||549.15||212.03||84.6/km2 (219.1/sq mi)||January 1, 1797|
|Calvillo||Calvillo||56,048||54,136||+3.5%||935.18||361.07||59.9/km2 (155.2/sq mi)||October 29, 1833|
|Cosío||Cosío||15,577||15,042||+3.6%||130.07||50.22||119.8/km2 (310.2/sq mi)||December 28, 1857|
|El Llano||Palo Alto||20,245||18,828||+7.5%||511.52||197.50||39.6/km2 (102.5/sq mi)||March 1, 1992|
|Jesús María||Jesús María||120,405||99,590||+20.9%||506.45||195.54||237.7/km2 (615.7/sq mi)||October 29, 1833|
|Pabellón de Arteaga||Pabellón de Arteaga||46,473||41,862||+11.0%||198.44||76.62||234.2/km2 (606.5/sq mi)||May 9, 1965|
|Rincón de Romos||Rincón de Romos||53,866||49,156||+9.6%||377.17||145.63||142.8/km2 (369.9/sq mi)||October 29, 1833|
|San Francisco de los Romo||San Francisco de los Romo||46,454||35,769||+29.9%||139.45||53.84||333.1/km2 (862.8/sq mi)||March 1, 1992|
|San José de Gracia||San José de Gracia||8,896||8,443||+5.4%||868.93||335.50||10.2/km2 (26.5/sq mi)||October 29, 1833|
|Tepezalá||Tepezalá||20,926||19,668||+6.4%||232.66||89.83||89.9/km2 (232.9/sq mi)||December 28, 1857|
|Aguascalientes||—||1,312,544||1,184,996||+10.8%||5,630.27||2,173.86||233.1/km2 (603.8/sq mi)||—|
|Mexico||—||119,938,473||112,336,538||+6.8%||1,972,550||761,605.81||60.8/km2 (157.5/sq mi)||—|