Los Mochis is a coastal city in northern Sinaloa, Mexico. It serves as the municipal seat of the municipality of Ahome. As of the 2010 census, the population was 362,613, which was 61 percent of the municipality's population.

Sinaloa, officially the Estado Libre y Soberano de Sinaloa, is one of the 31 states which, along with Mexico City, comprise the Federal Entities of Mexico. It is divided into 18 municipalities and its capital city is Culiacán Rosales.