San Juan–Bayamón–Caguas metropolitan area
In contrast, only the northern parts of San Juan, Bayamón, Carolina, Guaynabo, and Trujillo Alto are on the coastal plain, as the southern parts of Bayamón and Guayabo are on the hilly terrain of the Northern Karst Belt, and those of Carolina and Trujillo Alto are on the mountainous terrain of the Sierra de Luquillo.Roughly covering the eastern half of the main island of Puerto Rico, the topography of the 34 municipalities outside the inner urban core of the San Juan metropolitan area varies between the eastern and southern coastal plains, the Caguas Valley, the Yabucoa Valley, the North Karst Belt, and the Cordillera Central, Sierra de Cayey, and Sierra de Luquillo mountain subranges.Generally, low-lying areas along or near the shoreline in coastal municipalities, like those found in Vega Baja and Humacao, are greatly more urbanized and populated than inland, karstic, and mountainous areas, especially in elevated and interior municipalities like Orocovis, which is strictly rural and sparsely populated.The 3 municipalities in the Guayama metropolitan area–Patillas, Arroyo, and Guayama–are situated between the southern coastal plain and the Sierra de Cayey mountain subrange in the southeastern region of the main island.Both the Lares and Utuado micropolitan areas are situated between the Northern Karst Belt and the Cordillera Central mountain subrange in the western central region of the main island, while the Cocos micropolitan area of Salinas is situated between the southern coastal plain and the Sierra de Cayey mountain subrange in the southeastern region of the main island.
Metropolitan AreaPuerto RicoBayamónCatañoSan JuanGuaynaboCarolinaTrujillo AltoCaguasOld San JuanIsla VerdeCondado BeachCondadoSanturceMap of Puerto RicoStatistical areas in Puerto RicoAreciboGuayamaUtuadoMayagüez–AguadillaPonce–CoamoCountryUnited StatesTerritoryTime zoneUTC−4Spanishmetropolitan statistical areamunicipalitycoastal plainmain islandcombined statistical areaUnited States Census Bureausprawlingmunicipality of San JuanconurbationmunicipalitiesLevittownToa Bajaarchipelago and islandprincipal cities36th most populatedNashville-Davidson–Murfreesboro–Franklin, TN MSASan Jose–Sunnyvale–Santa Clara, CA MSAToa AltaVega BajaHumacaoRío GrandeCanóvanasGuraboManatíSan LorenzoJuncosDoradoLas PiedrasVega AltaCorozalFajardoNaranjitoBarranquitasYabucoaMorovisAibonitoAguas BuenasNaguaboBarcelonetaLoízaOrocovisComeríoLuquilloCialesFloridaMaunabophysiographicmountainousplainsNorthern Karst BeltSierra de LuquillotopographyCaguas ValleyYabucoa ValleyCordillera CentralSierra de CayeysubrangesRio Grandebarriodistanceelevationkarsticmetropolitan statistical areasmicropolitan statistical areas2010 census2000 census2020 census32nd most populous CSARaleigh–Durham–Cary, NC CSANashville-Davidson–Murfreesboro, TN CSAArecibo metropolitan statistical areaHatilloQuebradillasGuayama metropolitan statistical areaPatillasArroyoLares micropolitan statistical areaUtuado micropolitan statistical areaCoco micropolitan statistical areaSalinasArecibo metropolitan areaGuayama metropolitan areaUtuado micropolitan areasCocos micropolitan areapuebloMayagüez–Aguadilla CSAPonce–Coamo CSAMayagüez–Aguadilla combined statistical areaAguadilla metropolitan statistical areaAguadillaIsabelaSan SebastiánAguadaAñascoRincónMayagüez metropolitan statistical areaMayagüezCabo RojoSan Germán