Daylight through the yearLongest day (Jun 21): 13 h 14 min5:49 am – 7:03 pmShortest day (Dec 21): 11 h 2 min6:51 am – 5:53 pm
Sun todaySunrise –Sunset –
People33,119 residentsin the ZIP code areaMedian age 42.114,422 householdsMedian household income $23,598Median home value $148,600Median rent $584 a month45% of homes owner-occupiedMedian property tax $500 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting13.9% unemployment rate54% of adults are in the labour force, 12,747 employedMain industries: education and health care 22%, professional and business services 14%, retail 12%Average commute 24 minutes76% drive alone, 11% car-pool, 3% take public transport, 2% walk or cycle, 5% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages34% of adults have a bachelor's degree or higher84% finished high school, 12% hold a graduate degreeLanguages at home: English only 6%, Spanish 94%76% speak English less than very wellSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month August: highs 90°F, lows 73°FColdest month January: highs 85°F, lows 66°F76 in of rain a yearwettest month NovemberSnow is rare155 days above 90°F, 0 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Rio Piedras Exp Stn, Pr Rq station, 2 mi away; snow from San Juan L M Marin Ap, Pr Rq
Earthquakes1,708 of magnitude 3 or more within 50 miles since 197042 of magnitude 4+, 3 of magnitude 5+Largest: magnitude 5.1 on 24 Dec 201010 mi away, near Aguas Buenas, Puerto RicoMost recent: magnitude 3.1 on 20 Sep 202646 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Insufficient DataSan Juan Municipio, PR, compared with all US countiesSource: FEMA National Risk Index (county level)
Air quality61% of days had good air in 2025209 of 345 days measured136 moderate daysMedian index 45, worst day 99main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, nearest monitors: Catano County, PR, 5 mi away
Internet at home72% of households have a broadband subscription42% have cable, fibre or DSL27% rely on a mobile data plan alone24% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterMetropolitanoserves 1,084,637 people from surface water40 health-based violations since 2021latest Feb 2026: surface water treatment, treatment technique13 monitoring or reporting violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation103 ft31 m above sea levelSource: USGS 3D Elevation Program
