San Juan–Caguas–Guaynabo metropolitan area

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.

San Juan Metro Area (Área Metro)
The unofficial but colloquial San Juan metropolitan area (in Spanish; área metropolitana de San Juan, abbreviated AMSJ), also referred to as the Área Metro is the sprawling area surrounding the Municipality of San Juan which includes San Juan and its conurbation of the municipalities of Bayamón, Carolina, Cataño, Guaynabo and Trujillo Alto, and in some cases it also includes Toa Baja (particularly the suburb of Levittown). After San Juan, many of these municipalities are the most populous in the commonwealth of Puerto Rico. It represents the inner urban area of the metropolitan statistical area of San Juan. This urban area is also known as the Área metro de Puerto Rico based on the misconception that San Juan is the only urbanized metropolitan area in the island.

Municipalities in the San Juan–Bayamón–Caguas metropolitan area
San Juan–Bayamón–Caguas metropolitan area is the largest metropolitan area (by population) in Puerto Rico, covering approximately half of the island. Its principal cities are San Juan, Bayamón and Carolina.

A total of forty municipalities (municipios) are included as part of the San Juan–Bayamón–Caguas MSA. The total area for the MSA is 1,902.45 square miles. As of 2020, the San Juan metropolitan statistical area is the 35th most populated MSA (slightly smaller than Greater Cleveland but larger than San Jose metropolitan area in population).

Municipalities with over 100,000 inhabitants

 * San Juan (Principal city) Pop: 342,259
 * Bayamón (Principal city) Pop: 185,187
 * Carolina Pop: 154,815
 * Caguas (Principal city) Pop: 127,244

Municipalities with 50,000 to 100,000 inhabitants

 * Guaynabo (Principal city) Pop: 89,780
 * Arecibo Pop: 87,754
 * Toa Baja Pop: 75,293
 * Trujillo Alto Pop: 67,740
 * Toa Alta Pop: 66,852
 * Vega Baja Pop: 54,414
 * Humacao Pop: 50,896

Municipalities with fewer than 50,000 inhabitants

 * Río Grande Pop: 47,060
 * Canóvanas Pop: 42,337
 * Cayey Pop: 41,652
 * Gurabo Pop: 40,662
 * Cidra Pop: 39,970
 * Manatí Pop: 39,492
 * Hatillo Pop: 38,486
 * San Lorenzo Pop: 37,693
 * Juncos Pop: 37,012
 * Dorado Pop: 35,879
 * Vega Alta Pop: 35,395
 * Las Piedras Pop: 35,180
 * Corozal Pop: 34,571
 * Camuy Pop: 32,827
 * Yabucoa Pop: 30,426
 * Naranjito Pop: 29,241
 * Barranquitas Pop: 28,893
 * Morovis Pop: 28,727
 * Aibonito Pop: 24,637
 * Aguas Buenas Pop: 24,223
 * Loíza Pop: 23,693
 * Quebradillas Pop: 23,638
 * Naguabo Pop: 23,386
 * Cataño Pop: 23,155
 * Barceloneta Pop: 22,657
 * Orocovis Pop: 21,434
 * Comerío Pop: 18,883
 * Ciales Pop: 16,984
 * Florida Pop: 11,692
 * Maunabo Pop: 10,589

Combined Statistical Area
As of July 2023, the San Juan–Bayamón Combined Statistical Area (CSA) includes three metropolitan areas, three micropolitan areas, totalling fifty municipalities (municipios). A July 1, 2009 Census Bureau estimate placed the population at 2,732,036, a 4.16% increase over the 2000 census figure of 2,622,876. The San Juan–Bayamón Combined Statistical Area comprises 68.9% of Puerto Rico's total population. As of 2020, the San Juan combined statistical area is the 29th largest CSA (slightly smaller than Indianapolis and larger than Las Vegas in population).

Components

 * Metropolitan Statistical Areas (MSAs)
 * Arecibo metropolitan statistical area (4 municipalities)
 * Guayama metropolitan statistical area (3 municipalities)
 * San Juan–Bayamón–Caguas (40 municipalities)
 * Micropolitan statistical areas (μSAs)
 * Coco micropolitan statistical area (1 municipality)
 * Lares micropolitan statistical area (1 municipality)
 * Utuado micropolitan statistical area (1 municipality)