Rincón is a popular beach town and municipality of Puerto Rico founded in 1771 by Don Luis de Añasco, who previously founded Añasco in 173…Rincón is a popular beach town and municipality of Puerto Rico founded in 1771 by Don Luis de Añasco, who previously founded Añasco in 1733. It is located in the Western Coastal Valley, west of Añasco and Aguada. Rincón is spread over 9 barrios and Rincón Pueblo. It is part of the Aguadilla-Isabela-San Sebastián Metropolitan Statistical Area.