in 1845|250x250px , April 1912, during the
Mexican Revolution.|250x250px .|250x250px Sinaloa belongs to the northern limit of
Mesoamerica. To the north, the
Fuerte River marks the region known as
Aridoamerica, which includes the deserts and arid regions of
northern Mexico and
southwestern United States. Before European contact, the territory of Sinaloa was inhabited by groups such as the
Cahitas, the Tahues, the
Acaxees, the
Xiximes, the
Totorames, the
Achires and the
Guasaves. In 1531,
Nuño Beltrán de Guzmán, with a force of over 10,000 men, established a Spanish and allied Indian outpost at San Miguel de Culiacán. Over the next decade, the Cahíta suffered severe depopulation from conquest, smallpox and other diseases brought by Europeans. The northern region of the state was colonized by
Francisco de Ibarra, who founded a settlement in 1563 that later became
El Fuerte, named after the fort built there in 1610 under the direction of
Diego Martínez de Hurdaide. The Spanish organized Sinaloa as part of the
gobierno of
Nueva Galicia. In 1564, the area was realigned: the area of Culiacán and
Cosalá remained in control of Nueva Galicia, while the areas to the north, south, and west were made part of the newly formed
Nueva Vizcaya province, making the Culiacán area an exclave of Nueva Galicia. The first capital of Nueva Vizcaya was located in
San Sebastián, near
Copala, but was moved to
Durango in 1583. Starting in 1599,
Jesuit missionaries spread out from a base at what is now
Sinaloa de Leyva and by 1610, the Spanish influence had been extended to the northern edge of Sinaloa. In 1601, the Jesuits' movement into the eastern part of Sinaloa prompted the
Acaxee Rebellion. The Spanish eventually managed to subdue the indigenous peoples of the
Sierra Madre Occidental region and executed 48 Acaxee leaders. An account of the region's evangelization and colonial history was written by the Jesuit missionary
Andrés Pérez de Ribas in
Historia de los Triunfos de Nuestra Santa Fe, published in 1645. During the late colonial period, Sinaloa formed part of the province of
New Navarre and later as part of the
intendancy of Arizpe within the
Provincias Internas, a frontier administrative region of New Spain established to consolidate control over the northwest as part of the
Bourbon Reforms. After the
Mexican War of Independence, Sinaloa was joined with Sonora as the
Estado de Occidente, but in 1830 it separated to become
the 20th state of the
First Mexican Republic, with
Culiacán as its capital. During the
Second French Intervention in Mexico (1862–1867), several battles occurred in Sinaloa, including the
defense of Mazatlán and the
Battle of San Pedro, where republican forces led by
Antonio Rosales resisted French and Mexican imperial troops to maintain control of the Pacific coast. The
Porfiriato era was marked by the administration of Francisco Cañedo, who served multiple non-consecutive terms from 1877 to 1909. Cañedo oversaw modernization efforts in Sinaloa, including the expansion of railroads, the improvement of Mazatlán's port, and the promotion of agricultural exports.
Los Mochis was founded in 1893 by American settlers led by Albert K. Owen as part of the
Topolobampo cooperative agricultural and industrial colony, envisioned around
utopian socialism. During the
Mexican Revolution, Sinaloa saw early clashes between
Maderistas and Díaz's
Federal Army, and later naval engagements between
Huertistas and
Constitutionalists for control of the port of
Topolobampo. In the postrevolutionary period, extensive irrigation projects such as the Sanalona, Miguel Hidalgo, and Humaya dams converted vast tracts of arid land into fertile farmland. State investment, credit, and
land reform promoted large-scale production of wheat, rice, tomatoes, and other export-oriented crops, which led to the state being named "the granary of Mexico". Industrial and urban development accelerated in cities such as
Culiacán,
Mazatlán, and
Los Mochis, which became regional centers of agribusinesses, food processing, and tourism. Beginning in the mid-20th century, poppy and cannabis cultivation took root in the remote mountainous regions of the Sierra Madre Occidental, giving rise to a narcotics economy that would later shape the
Sinaloa Cartel, one of Mexico's largest criminal organizations. In 2008, the federal government launched
Operation Sinaloa, deploying military and police forces to curb cartel activity across the region during the
Mexican drug war. Since then, the state has experienced recurring cycles of violence, most markedly the
Battle of Culiacán in October 2019, and the
2023 Sinaloa unrest, when clashes between security forces and cartel members brought the state capital to a standstill. Ongoing
infighting in the Sinaloa Cartel has continued to drive instability in parts of the region. ==Geography==