El Arenal The entrance to the blue agave region of Tequila, this municipality is the exact prototype of natural richness, culture and history that we can enjoy in the area. Is a town and municipality, in Jalisco in central-western Mexico. The municipality covers an area of 181.81 km².As of 2005, the municipality had a total population of 13,574.The Tequila FactoriesThe municipality includes La Providencia, Cascahuín and Don Valente factories.