Area Code 939

Area code 939 serves PR, primarily San Juan, in the Atlantic Time (AT) time zone. It is an overlay area code sharing territory with area code 787.

Published: February 17, 2026Verified against NANPA and FCC records

Overlay Area Code

This area code shares its geographic footprint with an overlay code, so the same cities are served by two area codes. Because overlays leave existing numbers untouched, this region's relief planning favors adding codes over redrawing boundaries.

The codes serving this same region: area code 787 (San Juan).

In service since: 15-Sep-2001

Learn more about overlay and split area codes →

Demographics & Economics

Total Population: 7,255,163
Population Density: 906 people/sq mi
above U.S. average (U.S.: 95 people/sq mi)
Median Household Income: $25,454
below U.S. median (U.S.: $80,734)
Poverty Rate: 40.2%
above U.S. average (U.S.: 12.5%)
Unemployment Rate: 10.2%
above U.S. average (U.S.: 5.2%)
Education Attainment: Bachelor's Degree+
29.3%
below U.S. average (U.S.: 35.7%)
High School or Lower
39.8%

Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.

See how this area code compares to all US area codes in the income ranking and density ranking.

Time Zone

Atlantic Time (AT)

NANPA Relief Status

According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.

Source: NANPA NPA Relief Planning Reports · See all relief planning statuses

Current Time

Atlantic Time (AT)

Prefix Utilization

Geographic Coverage

State

Major Cities

San Juan
Bayamon
Carolina
Ponce
Caguas

Area Code 939 geographic coverage map (light mode)

Demographics

The estimated population served by area code 939 is approximately 7,255,163. The population density is 906 people per square mile, which is higher than the national average of 95. The median household income is $25,454, which is lower than the national median of $80,734. Approximately 29.3% of adults hold a bachelor's degree or higher, compared to the national rate of 35.7%. This rate is lower than the national average. The poverty rate stands at 40.2%, which is higher than the national rate of 12.5%.

History

Area code 939 serves as an overlay for the same territory as area code 787. It was introduced in 2001 to provide additional phone number capacity for the region. It shares its territory with area code area code 787.

County Coverage

Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 939).

County	Population	Share
San Juan Municipio, PR	532,785	7.3%
Toa Alta Municipio, PR	351,003	4.8%
Guaynabo Municipio, PR	329,463	4.5%
Trujillo Alto Municipio, PR	285,899	3.9%
Carolina Municipio, PR	256,947	3.5%
Bayamón Municipio, PR	245,461	3.4%
San Lorenzo Municipio, PR	190,702	2.6%
Toa Baja Municipio, PR	188,485	2.6%
Aguas Buenas Municipio, PR	167,938	2.3%
Ponce Municipio, PR	158,864	2.2%
Moca Municipio, PR	150,889	2.1%
Gurabo Municipio, PR	138,940	1.9%
Canóvanas Municipio, PR	131,973	1.8%
Corozal Municipio, PR	130,473	1.8%
Añasco Municipio, PR	129,725	1.8%
Caguas Municipio, PR	129,658	1.8%
Vega Baja Municipio, PR	127,855	1.8%
Manatí Municipio, PR	125,880	1.7%
Vega Alta Municipio, PR	124,541	1.7%
San Germán Municipio, PR	119,319	1.6%
Las Piedras Municipio, PR	118,320	1.6%
Humacao Municipio, PR	115,263	1.6%
Aguada Municipio, PR	115,191	1.6%
Cataño Municipio, PR	114,818	1.6%
Coamo Municipio, PR	107,852	1.5%
Isabela Municipio, PR	105,876	1.5%
Cidra Municipio, PR	104,765	1.4%
Arecibo Municipio, PR	101,232	1.4%
Cayey Municipio, PR	100,529	1.4%
Hatillo Municipio, PR	99,665	1.4%
Barceloneta Municipio, PR	98,618	1.4%
Utuado Municipio, PR	98,012	1.4%
San Sebastián Municipio, PR	92,705	1.3%
Aguadilla Municipio, PR	91,428	1.3%
Mayagüez Municipio, PR	81,309	1.1%
Barranquitas Municipio, PR	81,113	1.1%
Yabucoa Municipio, PR	76,365	1.1%
Comerío Municipio, PR	72,771	1.0%
Loíza Municipio, PR	64,614	0.9%
Ceiba Municipio, PR	64,130	0.9%
Las Marías Municipio, PR	61,500	0.8%
Orocovis Municipio, PR	60,213	0.8%
Juana Díaz Municipio, PR	58,827	0.8%
Quebradillas Municipio, PR	57,601	0.8%
Yauco Municipio, PR	56,195	0.8%
Santa Isabel Municipio, PR	53,927	0.7%
Adjuntas Municipio, PR	52,261	0.7%
Patillas Municipio, PR	51,240	0.7%
Guayanilla Municipio, PR	50,760	0.7%
Lajas Municipio, PR	50,611	0.7%
Río Grande Municipio, PR	47,077	0.6%
Cabo Rojo Municipio, PR	46,955	0.6%
Hormigueros Municipio, PR	45,378	0.6%
Guayama Municipio, PR	41,838	0.6%
Juncos Municipio, PR	37,243	0.5%
Sabana Grande Municipio, PR	36,984	0.5%
Florida Municipio, PR	36,156	0.5%
Dorado Municipio, PR	36,099	0.5%
Naguabo Municipio, PR	34,333	0.5%
Camuy Municipio, PR	32,753	0.5%
Fajardo Municipio, PR	31,756	0.4%
Arroyo Municipio, PR	31,408	0.4%
Ciales Municipio, PR	30,867	0.4%
Naranjito Municipio, PR	29,732	0.4%
Lares Municipio, PR	28,891	0.4%
Morovis Municipio, PR	28,534	0.4%
Maunabo Municipio, PR	26,235	0.4%
Salinas Municipio, PR	26,029	0.4%
Aibonito Municipio, PR	24,610	0.3%
Villalba Municipio, PR	21,829	0.3%
Peñuelas Municipio, PR	21,374	0.3%
Luquillo Municipio, PR	17,631	0.2%
Rincón Municipio, PR	15,432	0.2%
Jayuya Municipio, PR	14,816	0.2%
Maricao Municipio, PR	13,988	0.2%
Guánica Municipio, PR	13,276	0.2%
Vieques Municipio, PR	8,147	0.1%
Culebra Municipio, PR	1,281	0.0%

Area Code 939 Family Tree

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Area code 939 was originally assigned in 15-Sep-2001 to serve PR.

About Calls From This Area Code

Calls from this area code originate from PR. This information is provided for geographic context only. We do not provide spam or scam verdicts for individual phone numbers.