Bayamón is a city, municipality of Puerto Rico and suburb of San Juan located in the northern coastal valley, north of Aguas Buenas and Comerío; south of Toa Baja and Cataño; west of Guaynabo; and east of Toa Alta and Naranjito. Bayamón is spread over 11 barrios and Bayamón Pueblo. It is part of the San Juan-Caguas-Guaynabo Metropolitan Statistical Area and the second most populous municipality in both the metropolitan area and Puerto Rico.

The San Juan metropolitan area is a United States Census Bureau defined metropolitan statistical area (MSA) in northeastern Puerto Rico centered around the city of San Juan. A July 1, 2009, Census Bureau estimate placed the population at 2,617,089, a 4.31% increase over the 2000 census figure of 2,509,007.