939 Area CodeSan Juan, PR
Area code 939 covers San Juan and nearby communities in Puerto Rico, in the Atlantic Time (AST) zone, home to about 3,282,267 people across 253 cities. It was added in 2001 as an overlay of 787, so the same region uses both codes and every local call needs all ten digits.
Overview
- Major City
- San Juan
- State
- Puerto Rico (PR)
- Timezone
- Atlantic Time (AST)
- Current Time
- –:––
- Overlay
- Yes – shares area with 787
Where is area code 939?
Area code 939 serves part of San Juan, PR and the surrounding areas. It has a single overlay (787) that serves the same area.
Overview of the 939 Area Code
What is the 939 area code?
The 939 area code serves San Juan, Puerto Rico, alongside other established area codes. When you see a 939 number, it indicates a local number within this geographic area.
Why was area code 939 created?
Area code 939 went into service on September 15, 2001, as an overlay of 787. An overlay adds a second code to the same territory instead of splitting it: existing 787 numbers kept their digits, new lines began receiving 939 numbers, and local calls in the region require all ten digits.
Geographic Coverage of the 939 Area Code
The 939 area code serves San Juan and surrounding areas in Puerto Rico. It operates within the Atlantic Time (AST) time zone. It complements the coverage of area code 787. This area code covers several key cities, including:
- San Juan
- Bayamón
- Carolina
- Ponce
- Caguas
- Guaynabo
Got a call from a 939 number? It came from San Juan, PR. Since 939 overlays with 787, every local call in the region needs all ten digits to land on the right line. Of the listed cities' population, San Juan accounts for about 18.2%; the rest is split across 252 smaller cities.
San Juan Area Codes Overview
San Juan is served by multiple area codes, reflecting its telecommunications needs. The 939 area code operates alongside 787. Here are the area codes serving this region:
The introduction of the 939 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 939 cover?
| City | State | Population | Population in 939 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| San Juan | PR | 381,931 | 381,931 | 18.2% | 100.0% |
| Bayamón | PR | 185,996 | 185,996 | 8.9% | 100.0% |
| Carolina | PR | 157,832 | 156,543 | 7.5% | 99.2% |
| Ponce | PR | 132,502 | 132,502 | 6.3% | 100.0% |
| Caguas | PR | 82,243 | 82,243 | 3.9% | 100.0% |
| Guaynabo | PR | 75,443 | 75,443 | 3.6% | 100.0% |
| Mayagüez | PR | 70,463 | 70,463 | 3.4% | 100.0% |
| Trujillo Alto | PR | 48,437 | 48,437 | 2.3% | 100.0% |
| Arecibo | PR | 44,191 | 44,191 | 2.1% | 100.0% |
| Fajardo | PR | 28,930 | 28,930 | 1.4% | 100.0% |
| Cataño | PR | 28,140 | 28,140 | 1.3% | 100.0% |
| Levittown | PR | 26,960 | 25,073 | 1.3% | 93.0% |
| Vega Baja | PR | 25,905 | 25,905 | 1.2% | 100.0% |
| Guayama | PR | 22,691 | 22,691 | 1.1% | 100.0% |
| Humacao | PR | 18,629 | 18,629 | 0.9% | 100.0% |
| Yauco | PR | 17,186 | 17,186 | 0.8% | 100.0% |
| Candelaria | PR | 16,760 | 16,760 | 0.8% | 100.0% |
| Cayey | PR | 16,680 | 16,680 | 0.8% | 100.0% |
| Manatí | PR | 14,011 | 14,011 | 0.7% | 100.0% |
| Aguadilla | PR | 13,310 | 13,310 | 0.6% | 100.0% |
| Dorado | PR | 13,258 | 13,258 | 0.6% | 100.0% |
| Río Grande | PR | 12,677 | 12,677 | 0.6% | 100.0% |
| Hormigueros | PR | 12,443 | 12,443 | 0.6% | 100.0% |
| Coamo | PR | 11,522 | 11,522 | 0.5% | 100.0% |
| Isabela | PR | 11,255 | 11,255 | 0.5% | 100.0% |
| San Germán | PR | 10,989 | 10,989 | 0.5% | 100.0% |
| Vega Alta | PR | 10,266 | 10,266 | 0.5% | 100.0% |
| Corozal | PR | 10,160 | 10,160 | 0.5% | 100.0% |
| Pájaros | PR | 10,122 | 10,122 | 0.5% | 100.0% |
| Cabo Rojo | PR | 9,803 | 9,803 | 0.5% | 100.0% |
| Sabana Seca | PR | 9,705 | 9,705 | 0.5% | 100.0% |
| San Sebastián | PR | 9,622 | 9,622 | 0.5% | 100.0% |
| Utuado | PR | 8,397 | 8,397 | 0.4% | 100.0% |
| Aibonito | PR | 8,249 | 8,249 | 0.4% | 100.0% |
| Sabana Grande | PR | 8,179 | 8,179 | 0.4% | 100.0% |
| San Lorenzo | PR | 8,037 | 8,037 | 0.4% | 100.0% |
| Juana Díaz | PR | 7,916 | 7,916 | 0.4% | 100.0% |
| Luquillo | PR | 7,761 | 4,785 | 0.4% | 61.7% |
| Gurabo | PR | 7,609 | 7,609 | 0.4% | 100.0% |
| San Antonio | PR | 7,574 | 7,574 | 0.4% | 100.0% |
| Juncos | PR | 7,564 | 7,564 | 0.4% | 100.0% |
| Canóvanas | PR | 7,297 | 7,297 | 0.3% | 100.0% |
| Guánica | PR | 7,254 | 7,254 | 0.3% | 100.0% |
| Campanilla | PR | 6,868 | 6,868 | 0.3% | 100.0% |
| San Isidro | PR | 6,828 | 6,828 | 0.3% | 100.0% |
| Arroyo | PR | 6,396 | 6,396 | 0.3% | 100.0% |
| Yabucoa | PR | 6,047 | 6,047 | 0.3% | 100.0% |
| Puerto Real | PR | 5,983 | 5,983 | 0.3% | 100.0% |
| Santa Isabel | PR | 5,976 | 5,976 | 0.3% | 100.0% |
| Las Piedras | PR | 5,883 | 5,883 | 0.3% | 100.0% |
| Peñuelas | PR | 5,859 | 5,859 | 0.3% | 100.0% |
| Coco | PR | 5,758 | 5,758 | 0.3% | 100.0% |
| Ceiba | PR | 5,633 | 5,633 | 0.3% | 100.0% |
| Ingenio | PR | 5,354 | 5,354 | 0.3% | 100.0% |
| Quebradillas | PR | 5,282 | 5,282 | 0.3% | 100.0% |
| Cidra | PR | 5,109 | 5,109 | 0.2% | 100.0% |
| Añasco | PR | 5,075 | 5,075 | 0.2% | 100.0% |
| Punta Santiago | PR | 4,964 | 4,964 | 0.2% | 100.0% |
| Lares | PR | 4,917 | 4,917 | 0.2% | 100.0% |
| Candelaria Arenas | PR | 4,818 | 4,818 | 0.2% | 100.0% |
| Salinas | PR | 4,771 | 4,771 | 0.2% | 100.0% |
| Aguilita | PR | 4,747 | 4,747 | 0.2% | 100.0% |
| Florida | PR | 4,711 | 4,711 | 0.2% | 100.0% |
| Santa Bárbara | PR | 4,622 | 4,622 | 0.2% | 100.0% |
| Lajas | PR | 4,586 | 4,586 | 0.2% | 100.0% |
| Naguabo | PR | 4,443 | 4,443 | 0.2% | 100.0% |
| Hatillo | PR | 4,439 | 4,439 | 0.2% | 100.0% |
| Adjuntas | PR | 4,406 | 4,406 | 0.2% | 100.0% |
| Patillas | PR | 4,333 | 4,333 | 0.2% | 100.0% |
| Aguas Buenas | PR | 4,204 | 4,204 | 0.2% | 100.0% |
| Celada | PR | 4,081 | 4,081 | 0.2% | 100.0% |
| Comerío | PR | 4,020 | 4,020 | 0.2% | 100.0% |
| Capitanejo | PR | 3,954 | 3,954 | 0.2% | 100.0% |
| Guayanilla | PR | 3,949 | 3,949 | 0.2% | 100.0% |
| Imbéry | PR | 3,899 | 3,899 | 0.2% | 100.0% |
| Loíza | PR | 3,875 | 3,875 | 0.2% | 100.0% |
| Moca | PR | 3,861 | 3,861 | 0.2% | 100.0% |
| Barceloneta | PR | 3,785 | 3,785 | 0.2% | 100.0% |
| Toa Alta | PR | 3,713 | 3,713 | 0.2% | 100.0% |
| Bajadero | PR | 3,710 | 3,710 | 0.2% | 100.0% |
| Camuy | PR | 3,704 | 3,704 | 0.2% | 100.0% |
| Hacienda San José | PR | 3,531 | 3,531 | 0.2% | 100.0% |
| Villalba | PR | 3,384 | 3,384 | 0.2% | 100.0% |
| Ceiba | PR | 3,381 | 3,381 | 0.2% | 100.0% |
| Breñas | PR | 3,373 | 3,373 | 0.2% | 100.0% |
| Cabán | PR | 3,334 | 3,334 | 0.2% | 100.0% |
| Vieques | PR | 3,316 | 3,316 | 0.2% | 100.0% |
| Coquí | PR | 3,293 | 3,293 | 0.2% | 100.0% |
| Tierras Nuevas Poniente | PR | 3,228 | 3,228 | 0.2% | 100.0% |
| Aguada | PR | 3,212 | 3,212 | 0.2% | 100.0% |
| Santo Domingo | PR | 3,156 | 3,156 | 0.2% | 100.0% |
| Potala Pastillo | PR | 3,092 | 3,092 | 0.1% | 100.0% |
| La Dolores | PR | 3,081 | 3,081 | 0.1% | 100.0% |
| Coto Laurel | PR | 3,047 | 3,047 | 0.1% | 100.0% |
| Campo Rico | PR | 3,006 | 3,006 | 0.1% | 100.0% |
| Aguas Claras | PR | 3,006 | 3,006 | 0.1% | 100.0% |
| Luis Lloréns Torres | PR | 2,912 | 2,912 | 0.1% | 100.0% |
| Piedra Aguza | PR | 2,901 | 2,901 | 0.1% | 100.0% |
| San José | PR | 2,900 | 2,900 | 0.1% | 100.0% |
| Luyando | PR | 2,886 | 2,886 | 0.1% | 100.0% |
| Emajagua | PR | 2,857 | 2,857 | 0.1% | 100.0% |
| Monte Grande | PR | 2,800 | 2,800 | 0.1% | 100.0% |
| Jayuya | PR | 2,759 | 2,759 | 0.1% | 100.0% |
| La Fermina | PR | 2,743 | 2,743 | 0.1% | 100.0% |
| Carrizales | PR | 2,738 | 2,738 | 0.1% | 100.0% |
| Barranquitas | PR | 2,695 | 2,695 | 0.1% | 100.0% |
| Monserrate | PR | 2,592 | 2,592 | 0.1% | 100.0% |
| Ciales | PR | 2,591 | 2,591 | 0.1% | 100.0% |
| La Luisa | PR | 2,590 | 2,590 | 0.1% | 100.0% |
| Galateo | PR | 2,585 | 2,585 | 0.1% | 100.0% |
| Las Carolinas | PR | 2,570 | 2,570 | 0.1% | 100.0% |
| Alianza | PR | 2,569 | 2,569 | 0.1% | 100.0% |
| El Tumbao | PR | 2,511 | 2,511 | 0.1% | 100.0% |
| Jobos | PR | 2,479 | 2,479 | 0.1% | 100.0% |
| Barahona | PR | 2,469 | 2,469 | 0.1% | 100.0% |
| H. Rivera Colón | PR | 2,456 | 2,456 | 0.1% | 100.0% |
| Río Lajas | PR | 2,373 | 2,373 | 0.1% | 100.0% |
| Rafael González | PR | 2,303 | 2,303 | 0.1% | 100.0% |
| Luis M. Cintrón | PR | 2,290 | 2,290 | 0.1% | 100.0% |
| Mariano Colón | PR | 2,240 | 2,240 | 0.1% | 100.0% |
| Martorell | PR | 2,232 | 2,232 | 0.1% | 100.0% |
| Palmas | PR | 2,230 | 2,230 | 0.1% | 100.0% |
| Corazón | PR | 2,131 | 2,131 | 0.1% | 100.0% |
| Los Prados | PR | 2,129 | 2,129 | 0.1% | 100.0% |
| Los Llanos | PR | 2,118 | 2,118 | 0.1% | 100.0% |
| Olimpo | PR | 2,064 | 2,064 | 0.1% | 100.0% |
| Hato Candal | PR | 2,055 | 2,055 | 0.1% | 100.0% |
| Palmas del Mar | PR | 2,055 | 2,055 | 0.1% | 100.0% |
| Las Marías | PR | 2,049 | 2,049 | 0.1% | 100.0% |
| Bayamón | PR | 2,038 | 2,038 | 0.1% | 100.0% |
| Guayabal | PR | 2,036 | 2,036 | 0.1% | 100.0% |
| Morovis | PR | 2,032 | 2,032 | 0.1% | 100.0% |
| Boquerón | PR | 2,023 | 2,023 | 0.1% | 100.0% |
| Fránquez | PR | 1,948 | 1,948 | 0.1% | 100.0% |
| La Alianza | PR | 1,947 | 1,947 | 0.1% | 100.0% |
| San Antonio | PR | 1,942 | 1,942 | 0.1% | 100.0% |
| Vieques | PR | 1,938 | 1,938 | 0.1% | 100.0% |
| Piedra Gorda | PR | 1,937 | 1,937 | 0.1% | 100.0% |
| Palomas | PR | 1,936 | 1,936 | 0.1% | 100.0% |
| Suárez | PR | 1,931 | 1,931 | 0.1% | 100.0% |
| Comunas | PR | 1,900 | 1,900 | 0.1% | 100.0% |
| La Playa | PR | 1,900 | 1,900 | 0.1% | 100.0% |
| Vázquez | PR | 1,890 | 1,890 | 0.1% | 100.0% |
| Ramos | PR | 1,821 | 1,821 | 0.1% | 100.0% |
| Tallaboa Alta | PR | 1,816 | 1,816 | 0.1% | 100.0% |
| Miranda | PR | 1,804 | 1,804 | 0.1% | 100.0% |
| Sabana Hoyos | PR | 1,783 | 1,783 | 0.1% | 100.0% |
| G. L. García | PR | 1,751 | 1,751 | 0.1% | 100.0% |
| Lluveras | PR | 1,733 | 1,733 | 0.1% | 100.0% |
| Playita Cortada | PR | 1,731 | 0 | 0.1% | 0.0% |
| El Paraiso | PR | 1,716 | 1,716 | 0.1% | 100.0% |
| San Antonio | PR | 1,711 | 1,711 | 0.1% | 100.0% |
| Rafael Capó | PR | 1,700 | 1,700 | 0.1% | 100.0% |
| Pole Ojea | PR | 1,695 | 1,695 | 0.1% | 100.0% |
| Playa Fortuna | PR | 1,690 | 1,690 | 0.1% | 100.0% |
| Río Blanco | PR | 1,681 | 1,681 | 0.1% | 100.0% |
| Maunabo | PR | 1,668 | 1,668 | 0.1% | 100.0% |
| Buena Vista | PR | 1,660 | 1,660 | 0.1% | 100.0% |
| Naranjito | PR | 1,655 | 1,655 | 0.1% | 100.0% |
| Palomas | PR | 1,652 | 1,652 | 0.1% | 100.0% |
| Sabana | PR | 1,630 | 1,630 | 0.1% | 100.0% |
| Tiburones | PR | 1,616 | 1,616 | 0.1% | 100.0% |
| Daguao | PR | 1,604 | 1,604 | 0.1% | 100.0% |
| Coto Norte | PR | 1,604 | 1,604 | 0.1% | 100.0% |
| Culebra | PR | 1,590 | 1,590 | 0.1% | 100.0% |
| Antón Ruíz | PR | 1,589 | 1,589 | 0.1% | 100.0% |
| Mora | PR | 1,583 | 1,583 | 0.1% | 100.0% |
| Parcelas Nuevas | PR | 1,579 | 1,579 | 0.1% | 100.0% |
| Sabana Eneas | PR | 1,576 | 1,576 | 0.1% | 100.0% |
| Parcelas de Navarro | PR | 1,568 | 1,568 | 0.1% | 100.0% |
| Mucarabones | PR | 1,561 | 1,561 | 0.1% | 100.0% |
| Playita | PR | 1,558 | 1,558 | 0.1% | 100.0% |
| Las Ollas | PR | 1,557 | 1,557 | 0.1% | 100.0% |
| Jauca | PR | 1,529 | 1,529 | 0.1% | 100.0% |
| Pastos | PR | 1,514 | 1,514 | 0.1% | 100.0% |
| Toa Baja | PR | 1,513 | 1,513 | 0.1% | 100.0% |
| Indios | PR | 1,484 | 1,484 | 0.1% | 100.0% |
| El Mangó | PR | 1,482 | 1,482 | 0.1% | 100.0% |
| El Ojo | PR | 1,478 | 1,478 | 0.1% | 100.0% |
| Rincón | PR | 1,456 | 1,456 | 0.1% | 100.0% |
| Aceitunas | PR | 1,436 | 1,436 | 0.1% | 100.0% |
| Benítez | PR | 1,409 | 1,409 | 0.1% | 100.0% |
| Corcovado | PR | 1,405 | 1,405 | 0.1% | 100.0% |
| Rafael Hernández | PR | 1,351 | 1,351 | 0.1% | 100.0% |
| Quebrada del Agua | PR | 1,325 | 1,325 | 0.1% | 100.0% |
| Duque | PR | 1,320 | 1,320 | 0.1% | 100.0% |
| Bartolo | PR | 1,311 | 1,311 | 0.1% | 100.0% |
| Pueblito del Río | PR | 1,310 | 1,310 | 0.1% | 100.0% |
| Bajandas | PR | 1,309 | 1,309 | 0.1% | 100.0% |
| Central Aguirre | PR | 1,301 | 1,301 | 0.1% | 100.0% |
| Parcelas La Milagrosa | PR | 1,290 | 1,290 | 0.1% | 100.0% |
| María Antonia | PR | 1,285 | 1,285 | 0.1% | 100.0% |
| Espino | PR | 1,270 | 1,270 | 0.1% | 100.0% |
| Esperanza | PR | 1,219 | 1,219 | 0.1% | 100.0% |
| Candelero Arriba | PR | 1,215 | 1,215 | 0.1% | 100.0% |
| Magas Arriba | PR | 1,215 | 1,215 | 0.1% | 100.0% |
| Animas | PR | 1,203 | 1,203 | 0.1% | 100.0% |
| Buena Vista | PR | 1,134 | 1,134 | 0.1% | 100.0% |
| Cayuco | PR | 1,120 | 1,120 | 0.1% | 100.0% |
| Liborio Negrón Torres | PR | 1,112 | 1,112 | 0.1% | 100.0% |
| Fuig | PR | 1,110 | 1,110 | 0.1% | 100.0% |
| Palmarejo | PR | 1,090 | 1,090 | 0.1% | 100.0% |
| Stella | PR | 1,088 | 1,088 | 0.1% | 100.0% |
| Garrochales | PR | 1,086 | 1,086 | 0.1% | 100.0% |
| El Negro | PR | 1,075 | 1,075 | 0.1% | 100.0% |
| Jagual | PR | 1,062 | 1,062 | 0.1% | 100.0% |
| Rosa Sánchez | PR | 1,055 | 1,055 | 0.1% | 100.0% |
| Las Croabas | PR | 1,053 | 1,053 | 0.0% | 100.0% |
| Lamboglia | PR | 1,050 | 1,050 | 0.0% | 100.0% |
| Yaurel | PR | 1,050 | 1,050 | 0.0% | 100.0% |
| La Parguera | PR | 1,044 | 1,044 | 0.0% | 100.0% |
| Boquerón | PR | 1,043 | 1,043 | 0.0% | 100.0% |
| Río Cañas Abajo | PR | 1,038 | 1,038 | 0.0% | 100.0% |
| Palmer | PR | 1,032 | 1,032 | 0.0% | 100.0% |
| Marueño | PR | 1,011 | 1,011 | 0.0% | 100.0% |
| Palo Seco | PR | 1,008 | 1,008 | 0.0% | 100.0% |
| Cacao | PR | 1,001 | 1,001 | 0.0% | 100.0% |
| Quebrada | PR | 995 | 995 | 0.0% | 100.0% |
| Juncal | PR | 994 | 994 | 0.0% | 100.0% |
| Peña Pobre | PR | 991 | 991 | 0.0% | 100.0% |
| Santa Clara | PR | 982 | 982 | 0.0% | 100.0% |
| Palmarejo | PR | 966 | 966 | 0.0% | 100.0% |
| Lomas | PR | 956 | 956 | 0.0% | 100.0% |
| Las Ochenta | PR | 951 | 951 | 0.0% | 100.0% |
| Búfalo | PR | 949 | 949 | 0.0% | 100.0% |
| Parcelas Peñuelas | PR | 941 | 941 | 0.0% | 100.0% |
| Tallaboa | PR | 925 | 925 | 0.0% | 100.0% |
| Maguayo | PR | 903 | 903 | 0.0% | 100.0% |
| Betances | PR | 876 | 876 | 0.0% | 100.0% |
| Maricao | PR | 868 | 868 | 0.0% | 100.0% |
| La Plena | PR | 865 | 865 | 0.0% | 100.0% |
| Las Marías | PR | 806 | 806 | 0.0% | 100.0% |
| Cerillos Hoyos | PR | 748 | 748 | 0.0% | 100.0% |
| Pajonal | PR | 742 | 742 | 0.0% | 100.0% |
| Orocovis | PR | 722 | 722 | 0.0% | 100.0% |
| Parcelas Viejas Borinquen | PR | 677 | 677 | 0.0% | 100.0% |
| Hato Arriba | PR | 676 | 676 | 0.0% | 100.0% |
| La Yuca | PR | 665 | 665 | 0.0% | 100.0% |
| Candelero Abajo | PR | 598 | 598 | 0.0% | 100.0% |
| Pueblito del Carmen | PR | 572 | 572 | 0.0% | 100.0% |
| Parcelas Mandry | PR | 571 | 571 | 0.0% | 100.0% |
| Playita | PR | 553 | 553 | 0.0% | 100.0% |
| Vayas | PR | 528 | 528 | 0.0% | 100.0% |
| El Combate | PR | 423 | 423 | 0.0% | 100.0% |
| Bairoa La Vienticinco | PR | 399 | 399 | 0.0% | 100.0% |
| Tibes | PR | 362 | 362 | 0.0% | 100.0% |
| Rodríguez Hevia | PR | 325 | 325 | 0.0% | 100.0% |
| Anon Raices | PR | 287 | 287 | 0.0% | 100.0% |
| La Liga | PR | 281 | 281 | 0.0% | 100.0% |
| Los Panes | PR | 267 | 267 | 0.0% | 100.0% |
| Corral Viejo | PR | 260 | 260 | 0.0% | 100.0% |
| Calzada | PR | 191 | 191 | 0.0% | 100.0% |
| Monte Verde | PR | 137 | 137 | 0.0% | 100.0% |
City population is shown in full. The share of each city inside 939 is measured from Census tract centroids, not estimated from a rate-center match – so a city split between two codes appears on both, at the fraction each one actually holds. The “% of listed-city population” column uses the full populations of the cities listed here.
What counties does area code 939 cover?
3,282,267 residents across 78 counties, counted inside the 939 boundary — a county split between codes contributes only its part. The 35 largest are listed.
| County | State | Population in 939 | % of area-code footprint | % of County |
|---|---|---|---|---|
| San Juan Municipio | PR | 342,259 | 10% | 100% |
| Bayamón Municipio | PR | 185,187 | 6% | 100% |
| Carolina Municipio | PR | 153,690 | 5% | 99% |
| Ponce Municipio | PR | 137,491 | 4% | 100% |
| Caguas Municipio | PR | 127,244 | 4% | 100% |
| Guaynabo Municipio | PR | 89,780 | 3% | 100% |
| Arecibo Municipio | PR | 87,754 | 3% | 100% |
| Toa Baja Municipio | PR | 75,293 | 2% | 100% |
| Mayagüez Municipio | PR | 73,077 | 2% | 100% |
| Trujillo Alto Municipio | PR | 67,740 | 2% | 100% |
| Toa Alta Municipio | PR | 66,852 | 2% | 100% |
| Aguadilla Municipio | PR | 55,101 | 2% | 100% |
| Vega Baja Municipio | PR | 54,414 | 2% | 100% |
| Humacao Municipio | PR | 50,896 | 2% | 100% |
| Cabo Rojo Municipio | PR | 47,158 | 1% | 100% |
| Río Grande Municipio | PR | 47,060 | 1% | 100% |
| Juana Díaz Municipio | PR | 46,538 | 1% | 100% |
| Isabela Municipio | PR | 42,943 | 1% | 100% |
| Canóvanas Municipio | PR | 42,337 | 1% | 100% |
| Cayey Municipio | PR | 41,652 | 1% | 100% |
| Gurabo Municipio | PR | 40,622 | 1% | 100% |
| Cidra Municipio | PR | 39,970 | 1% | 100% |
| Manatí Municipio | PR | 39,492 | 1% | 100% |
| San Sebastián Municipio | PR | 39,345 | 1% | 100% |
| Hatillo Municipio | PR | 38,486 | 1% | 100% |
| Aguada Municipio | PR | 38,136 | 1% | 100% |
| San Lorenzo Municipio | PR | 37,693 | 1% | 100% |
| Moca Municipio | PR | 37,460 | 1% | 100% |
| Juncos Municipio | PR | 37,012 | 1% | 100% |
| Guayama Municipio | PR | 36,614 | 1% | 100% |
| Dorado Municipio | PR | 35,879 | 1% | 100% |
| Vega Alta Municipio | PR | 35,395 | 1% | 100% |
| Las Piedras Municipio | PR | 35,180 | 1% | 100% |
| Coamo Municipio | PR | 34,668 | 1% | 100% |
| Corozal Municipio | PR | 34,571 | 1% | 100% |
Sources: City populations – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). State populations – the same program, Vintage 2025 (CO-EST2025-ALLDATA). Area-code footprint and county populations – 2020 Census Centers of Population, mapped against NANP area code boundaries. The share of each city inside a code is measured the same way, against Census place boundaries from the Census Bureau's TIGERweb service. Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 939 been reported for unwanted calls?
Yes – 26 unwanted-call complaints were reported to the FTC for numbers showing a 939 area code (Jun 2 – Aug 11, 2026).
- 31% robocalls
- ↑ 17% vs prior period
Most-reported subjects
- Other62%16
- Reducing your debt (credit cards, mortgage, student loans)19%5
- Medical & prescriptions8%2
Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-08-17.
Which prefixes and exchanges belong to area code 939?
31% assigned to a telco
- 54% Landline
- 46% Wireless
- 0% Unknown
of 313 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (939)200- | Wireless | T-Mobile Usa |
| (939)201- | Landline | At&T |
| (939)202- | Landline | Telefonica Larga Distancia De Puerto Rico |
| (939)203- | Wireless | Sprint Spectrum |
| (939)204- | Landline | Liberty Communications Of Puerto Rico |
| (939)205- | Landline | Telefonica Larga Distancia De Puerto Rico |
| (939)206- | Wireless | T-Mobile Usa |
| (939)207- | Wireless | Sprint Spectrum |
| (939)208- | Wireless | New Cingular Wireless Pcs |
| (939)209- | Wireless | Sprint Spectrum |
| (939)210- | Wireless | Sprint Spectrum |
| (939)212- | Landline | At&T |
| (939)213- | Wireless | T-Mobile Usa |
| (939)214- | Landline | At&T |
| (939)215- | Wireless | Sprint Spectrum |
| (939)216- | Wireless | T-Mobile Usa |
| (939)217- | Wireless | T-Mobile Usa |
| (939)218- | Wireless | New Cingular Wireless Pcs |
| (939)219- | Wireless | T-Mobile Usa |
| (939)220- | Wireless | Sprint Spectrum |
| (939)221- | Landline | Worldnet Telecommunications |
| (939)222- | Wireless | T-Mobile Usa |
| (939)223- | Wireless | T-Mobile Usa |
| (939)224- | Wireless | T-Mobile Usa |
| (939)225- | Landline | Telefonica Larga Distancia De Puerto Rico |
| (939)226- | Wireless | Sprint Spectrum |
| (939)227- | Wireless | New Cingular Wireless Pcs |
| (939)228- | Wireless | T-Mobile Usa |
| (939)229- | Landline | Data@ccess Communication |
| (939)230- | Landline | Liberty Communications Of Puerto Rico |
| (939)231- | Wireless | T-Mobile Usa |
| (939)232- | Wireless | T-Mobile Usa |
| (939)233- | Wireless | T-Mobile Usa |
| (939)234- | Landline | At&T |
| (939)235- | Wireless | New Cingular Wireless Pcs |
| (939)236- | Landline | Lumen Technologies Puerto Rico |
| (939)237- | Wireless | Sprint Spectrum |
| (939)238- | Wireless | New Cingular Wireless Pcs |
| (939)239- | Wireless | New Cingular Wireless Pcs |
| (939)240- | Wireless | T-Mobile Usa |
| (939)241- | Landline | Claro Puerto Rico |
| (939)242- | Landline | Claro Puerto Rico |
| (939)243- | Landline | Claro Puerto Rico |
| (939)244- | Landline | Claro Puerto Rico |
| (939)245- | Landline | Claro Puerto Rico |
| (939)246- | Landline | Claro Puerto Rico |
| (939)247- | Landline | Claro Puerto Rico |
| (939)248- | Landline | Claro Puerto Rico |
| (939)249- | Landline | Claro Puerto Rico |
| (939)250- | Landline | Claro Puerto Rico |
| (939)251- | Landline | Claro Puerto Rico |
| (939)252- | Wireless | New Cingular Wireless Pcs |
| (939)253- | Landline | Claro Puerto Rico |
| (939)254- | Landline | Claro Puerto Rico |
| (939)255- | Landline | Claro Puerto Rico |
| (939)256- | Landline | Claro Puerto Rico |
| (939)257- | Landline | Claro Puerto Rico |
| (939)258- | Landline | Claro Puerto Rico |
| (939)259- | Landline | Claro Puerto Rico |
| (939)260- | Landline | Claro Puerto Rico |
| (939)261- | Landline | Claro Puerto Rico |
| (939)262- | Landline | Claro Puerto Rico |
| (939)263- | Landline | Claro Puerto Rico |
| (939)264- | Landline | Claro Puerto Rico |
| (939)265- | Landline | Claro Puerto Rico |
| (939)266- | Landline | Claro Puerto Rico |
| (939)267- | Landline | Claro Puerto Rico |
| (939)268- | Landline | Claro Puerto Rico |
| (939)269- | Landline | Claro Puerto Rico |
| (939)270- | Landline | Claro Puerto Rico |
| (939)271- | Landline | Claro Puerto Rico |
| (939)272- | Landline | Claro Puerto Rico |
| (939)273- | Landline | Claro Puerto Rico |
| (939)274- | Landline | Claro Puerto Rico |
| (939)275- | Landline | Claro Puerto Rico |
| (939)276- | Landline | Claro Puerto Rico |
| (939)277- | Landline | Claro Puerto Rico |
| (939)278- | Landline | Claro Puerto Rico |
| (939)279- | Landline | Claro Puerto Rico |
| (939)280- | Landline | Claro Puerto Rico |
| (939)281- | Landline | Claro Puerto Rico |
| (939)282- | Landline | Claro Puerto Rico |
| (939)283- | Landline | Claro Puerto Rico |
| (939)284- | Landline | Claro Puerto Rico |
| (939)285- | Landline | Claro Puerto Rico |
| (939)286- | Landline | Claro Puerto Rico |
| (939)287- | Landline | Claro Puerto Rico |
| (939)288- | Landline | Claro Puerto Rico |
| (939)289- | Landline | Claro Puerto Rico |
| (939)290- | Landline | Claro Puerto Rico |
| (939)291- | Landline | Liberty Communications Of Puerto Rico |
| (939)292- | Wireless | New Cingular Wireless Pcs |
| (939)293- | Wireless | Sprint Spectrum |
| (939)294- | Wireless | T-Mobile Usa |
| (939)295- | Wireless | T-Mobile Usa |
| (939)296- | Landline | Natural G.C. |
| (939)297- | Wireless | Sprint Spectrum |
| (939)298- | Landline | Lumen Technologies Puerto Rico |
| (939)299- | Wireless | T-Mobile Usa |
| (939)300- | Landline | Natural G.C. |
| (939)301- | Landline | Claro Puerto Rico |
| (939)302- | Landline | Claro Puerto Rico |
| (939)303- | Wireless | Sprint Spectrum |
| (939)304- | Landline | Claro Puerto Rico |
| (939)305- | Landline | Claro Puerto Rico |
| (939)306- | Landline | Claro Puerto Rico |
| (939)307- | Landline | At&T |
| (939)308- | Wireless | T-Mobile Usa |
| (939)309- | Landline | Telefonica Larga Distancia De Puerto Rico |
| (939)310- | Landline | Claro Puerto Rico |
| (939)312- | Wireless | New Cingular Wireless Pcs |
| (939)313- | Wireless | New Cingular Wireless Pcs |
| (939)314- | Landline | Claro Puerto Rico |
| (939)315- | Landline | Telnyx |
| (939)316- | Wireless | T-Mobile Usa |
| (939)317- | Wireless | T-Mobile Usa |
| (939)318- | Landline | Lumen Technologies Puerto Rico |
| (939)319- | Wireless | T-Mobile Usa |
| (939)320- | Wireless | T-Mobile Usa |
| (939)321- | Wireless | T-Mobile Usa |
| (939)322- | Wireless | T-Mobile Usa |
| (939)323- | Wireless | T-Mobile Usa |
| (939)324- | Landline | Metropcs |
| (939)325- | Wireless | T-Mobile Usa |
| (939)326- | Wireless | T-Mobile Usa |
| (939)327- | Wireless | T-Mobile Usa |
| (939)328- | Wireless | T-Mobile Usa |
| (939)329- | Landline | At&T |
| (939)330- | Wireless | T-Mobile Usa |
| (939)331- | Wireless | T-Mobile Usa |
| (939)332- | Wireless | New Cingular Wireless Pcs |
| (939)333- | Landline | Liberty Communications Of Puerto Rico |
| (939)334- | Landline | Claro Puerto Rico |
| (939)335- | Wireless | T-Mobile Usa |
| (939)336- | Landline | Liberty Communications Of Puerto Rico |
| (939)337- | Landline | Liberty Communications Of Puerto Rico |
| (939)338- | Landline | Liberty Communications Of Puerto Rico |
| (939)339- | Wireless | T-Mobile Usa |
| (939)340- | Landline | Claro Puerto Rico |
| (939)341- | Wireless | New Cingular Wireless Pcs |
| (939)342- | Wireless | T-Mobile Usa |
| (939)343- | Wireless | T-Mobile Usa |
| (939)344- | Wireless | T-Mobile Usa |
| (939)345- | Landline | Liberty Communications Of Puerto Rico |
| (939)346- | Wireless | T-Mobile Usa |
| (939)347- | Wireless | T-Mobile Usa |
| (939)348- | Wireless | New Cingular Wireless Pcs |
| (939)349- | Wireless | T-Mobile Usa |
| (939)350- | Wireless | Sprint Spectrum |
| (939)351- | Wireless | T-Mobile Usa |
| (939)352- | Wireless | Sprint Spectrum |
| (939)353- | Landline | Liberty Mobile Puerto Rico |
| (939)354- | Wireless | New Cingular Wireless Pcs |
| (939)355- | Landline | Liberty Communications Of Puerto Rico |
| (939)356- | Wireless | T-Mobile Usa |
| (939)357- | Landline | Liberty Communications Of Puerto Rico |
| (939)358- | Wireless | Sprint Spectrum |
| (939)359- | Landline | Neutral Tandem |
| (939)361- | Wireless | T-Mobile Usa |
| (939)362- | Wireless | T-Mobile Usa |
| (939)363- | Wireless | T-Mobile Usa |
| (939)366- | Wireless | T-Mobile Usa |
| (939)367- | Wireless | T-Mobile Usa |
| (939)369- | Landline | Neutral Tandem |
| (939)371- | Landline | Metropcs |
| (939)377- | Wireless | T-Mobile Usa |
| (939)383- | Wireless | New Cingular Wireless Pcs |
| (939)384- | Wireless | T-Mobile Usa |
| (939)385- | Wireless | New Cingular Wireless Pcs |
| (939)388- | Wireless | New Cingular Wireless Pcs |
| (939)389- | Wireless | New Cingular Wireless Pcs |
| (939)391- | Wireless | T-Mobile Usa |
| (939)393- | Landline | Natural G.C. |
| (939)394- | Landline | At&T |
| (939)395- | Wireless | T-Mobile Usa |
| (939)397- | Wireless | New Cingular Wireless Pcs |
| (939)399- | Landline | Liberty Communications Of Puerto Rico |
| (939)400- | Landline | Claro Puerto Rico |
| (939)401- | Landline | Claro Puerto Rico |
| (939)402- | Landline | Claro Puerto Rico |
| (939)403- | Landline | Claro Puerto Rico |
| (939)404- | Landline | Claro Puerto Rico |
| (939)405- | Landline | Claro Puerto Rico |
| (939)406- | Wireless | T-Mobile Usa |
| (939)407- | Wireless | T-Mobile Usa |
| (939)408- | Wireless | T-Mobile Usa |
| (939)409- | Wireless | T-Mobile Usa |
| (939)410- | Landline | Liberty Mobile Puerto Rico |
| (939)412- | Landline | Natural G.C. |
| (939)413- | Landline | Claro Puerto Rico |
| (939)414- | Landline | Claro Puerto Rico |
| (939)415- | Landline | Claro Puerto Rico |
| (939)416- | Landline | Claro Puerto Rico |
| (939)417- | Landline | Claro Puerto Rico |
| (939)418- | Landline | Claro Puerto Rico |
| (939)419- | Wireless | T-Mobile Usa |
| (939)422- | Wireless | T-Mobile Usa |
| (939)425- | Wireless | T-Mobile Usa |
| (939)428- | Wireless | T-Mobile Usa |
| (939)429- | Wireless | T-Mobile Usa |
| (939)437- | Landline | Telefonica Larga Distancia De Puerto Rico |
| (939)438- | Wireless | New Cingular Wireless Pcs |
| (939)439- | Wireless | Sprint Spectrum |
| (939)440- | Landline | At&T |
| (939)441- | Wireless | T-Mobile Usa |
| (939)444- | Landline | Natural G.C. |
| (939)445- | Landline | Natural G.C. |
| (939)449- | Wireless | T-Mobile Usa |
| (939)450- | Landline | Claro Puerto Rico |
| (939)451- | Landline | Claro Puerto Rico |
| (939)452- | Wireless | Sprint Spectrum |
| (939)454- | Landline | Claro Puerto Rico |
| (939)456- | Landline | Claro Puerto Rico |
| (939)457- | Landline | Claro Puerto Rico |
| (939)458- | Landline | Claro Puerto Rico |
| (939)459- | Wireless | Sprint Spectrum |
| (939)460- | Landline | Claro Puerto Rico |
| (939)464- | Landline | Claro Puerto Rico |
| (939)465- | Landline | Liberty Communications Of Puerto Rico |
| (939)475- | Wireless | New Cingular Wireless Pcs |
| (939)478- | Wireless | T-Mobile Usa |
| (939)484- | Wireless | Sprint Spectrum |
| (939)488- | Wireless | T-Mobile Usa |
| (939)489- | Wireless | New Cingular Wireless Pcs |
| (939)490- | Landline | Claro Puerto Rico |
| (939)491- | Landline | Claro Puerto Rico |
| (939)492- | Wireless | Sprint Spectrum |
| (939)493- | Landline | Claro Puerto Rico |
| (939)494- | Landline | Claro Puerto Rico |
| (939)496- | Landline | Claro Puerto Rico |
| (939)497- | Landline | Claro Puerto Rico |
| (939)498- | Landline | Claro Puerto Rico |
| (939)499- | Landline | Claro Puerto Rico |
| (939)500- | Landline | Puerto Rico Tel. Co. |
| (939)525- | Wireless | T-Mobile Usa |
| (939)529- | Wireless | T-Mobile Usa |
| (939)535- | Landline | Puerto Rico Tel. Co. |
| (939)539- | Wireless | T-Mobile Usa |
| (939)544- | Landline | Liberty Communications Of Puerto Rico |
| (939)545- | Landline | Liberty Communications Of Puerto Rico |
| (939)569- | Landline | Neutral Tandem |
| (939)577- | Wireless | Sprint Spectrum |
| (939)579- | Wireless | New Cingular Wireless Pcs |
| (939)585- | Wireless | T-Mobile Usa |
| (939)588- | Wireless | T-Mobile Usa |
| (939)592- | Landline | Natural G.C. |
| (939)599- | Wireless | Sprint Spectrum |
| (939)600- | Landline | Neutral Tandem |
| (939)606- | Wireless | T-Mobile Usa |
| (939)608- | Wireless | T-Mobile Usa |
| (939)609- | Landline | Liberty Communications Of Puerto Rico |
| (939)610- | Landline | Neutral Tandem |
| (939)625- | Wireless | T-Mobile Usa |
| (939)628- | Wireless | New Cingular Wireless Pcs |
| (939)629- | Landline | Neutral Tandem |
| (939)630- | Wireless | New Cingular Wireless Pcs |
| (939)633- | Wireless | T-Mobile Usa |
| (939)638- | Wireless | Sprint Spectrum |
| (939)639- | Wireless | New Cingular Wireless Pcs |
| (939)640- | Wireless | New Cingular Wireless Pcs |
| (939)641- | Wireless | T-Mobile Usa |
| (939)642- | Wireless | New Cingular Wireless Pcs |
| (939)644- | Wireless | New Cingular Wireless Pcs |
| (939)645- | Wireless | New Cingular Wireless Pcs |
| (939)649- | Wireless | T-Mobile Usa |
| (939)652- | Wireless | T-Mobile Usa |
| (939)655- | Wireless | New Cingular Wireless Pcs |
| (939)666- | Landline | Natural G.C. |
| (939)687- | Landline | Liberty Communications Of Puerto Rico |
| (939)697- | Landline | At&T |
| (939)699- | Landline | Liberty Communications Of Puerto Rico |
| (939)709- | Landline | Natural G.C. |
| (939)715- | Landline | Liberty Communications Of Puerto Rico |
| (939)716- | Landline | Liberty Communications Of Puerto Rico |
| (939)717- | Wireless | New Cingular Wireless Pcs |
| (939)729- | Wireless | T-Mobile Usa |
| (939)731- | Landline | At&T |
| (939)732- | Wireless | T-Mobile Usa |
| (939)739- | Landline | Neutral Tandem |
| (939)745- | Wireless | T-Mobile Usa |
| (939)749- | Landline | Neutral Tandem |
| (939)759- | Landline | Neutral Tandem |
| (939)775- | Wireless | T-Mobile Usa |
| (939)777- | Landline | Claro Puerto Rico |
| (939)779- | Landline | Neutral Tandem |
| (939)788- | Wireless | T-Mobile Usa |
| (939)800- | Landline | Natural G.C. |
| (939)808- | Wireless | T-Mobile Usa |
| (939)814- | Landline | Liberty Communications Of Puerto Rico |
| (939)835- | Wireless | T-Mobile Usa |
| (939)839- | Landline | Neutral Tandem |
| (939)845- | Wireless | T-Mobile Usa |
| (939)865- | Wireless | T-Mobile Usa |
| (939)866- | Wireless | T-Mobile Usa |
| (939)881- | Wireless | T-Mobile Usa |
| (939)888- | Landline | Natural G.C. |
| (939)891- | Wireless | T-Mobile Usa |
| (939)900- | Landline | Natural G.C. |
| (939)901- | Landline | Liberty Mobile Puerto Rico |
| (939)902- | Landline | Liberty Mobile Puerto Rico |
| (939)903- | Landline | Liberty Mobile Puerto Rico |
| (939)904- | Landline | Liberty Mobile Puerto Rico |
| (939)905- | Landline | Liberty Mobile Puerto Rico |
| (939)910- | Landline | At&T |
| (939)915- | Landline | Liberty Communications Of Puerto Rico |
| (939)928- | Landline | Liberty Communications Of Puerto Rico |
| (939)935- | Landline | Liberty Communications Of Puerto Rico |
| (939)940- | Wireless | New Cingular Wireless Pcs |
| (939)945- | Landline | Telefonica Larga Distancia De Puerto Rico |
| (939)969- | Wireless | New Cingular Wireless Pcs |
| (939)985- | Landline | Natural G.C. |
| (939)992- | Landline | Liberty Communications Of Puerto Rico |
| (939)999- | Landline | Natural G.C. |
| No prefixes match “”. | ||
Frequently Asked Questions about the 939 Area Code
Who called me from a 939 number?
A 939 number is assigned to San Juan, Puerto Rico, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 939 code to look nearby, so a 939 number doesn't prove the caller is local. Recently, 26 unwanted-call complaints were reported to the FTC for numbers showing the 939 code (31% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 939 a scam area code?
No area code is a scam on its own. 939 is a normal, officially assigned code for San Juan, Puerto Rico. Spam callers spoof local codes to raise the odds you answer, so 939 on your caller ID says nothing about who is really calling. Recently, 26 unwanted-call complaints were reported to the FTC for numbers showing the 939 code (31% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 939 area code?
Repeated calls from different 939 numbers are usually spoofing: a robocaller rotates through 939 numbers so each call looks local and slips past simple blocks. Recently, 26 unwanted-call complaints were reported to the FTC for numbers showing the 939 code (31% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 939 number?
If you aren't expecting a 939 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 939 area code?
Block a single 939 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 939 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 939?
Area code 939 covers San Juan and the surrounding area in Puerto Rico, spanning 253 cities with about 3,282,267 residents. It shares its area with overlay code 787.
When did area code 939 go into service?
Area code 939 went into service on September 15, 2001. It was added as an overlay of 787, so 939 numbers serve the same area that 787 already covered.
Is 939 a real area code?
Yes. 939 is an active code in the North American Numbering Plan, assigned by NANPA and in service for San Juan, Puerto Rico. A real code can still show up on spoofed spam calls, so treat unknown 939 calls with normal caution.
What timezone is the 939 area code in?
The 939 area code is in the Atlantic Time (AST). Because a number can be kept when someone moves or switches to VoIP, a specific 939 caller may not be in that zone.
How do I call a 939 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 939 and the seven-digit number. From a mobile phone you can usually just enter +1 939 followed by the number and let the phone add the exit code for you.