Daylight through the yearLongest day (Jun 21): 13 h 47 min6:42 am – 8:29 pmShortest day (Dec 21): 10 h 30 min7:17 am – 5:47 pm
Sun todaySunrise –Sunset –
People20 residentsin the ZIP code area20 households100% of homes owner-occupiedSource: US Census Bureau, American Community Survey 2020-2024
ClimateWarmest month August: highs 97°F, lows 75°FColdest month January: highs 69°F, lows 47°F20 in of rain a year, on about 31 dayswettest month SeptemberSnow is rare183 days above 90°F, 2 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, La Joya station, 16 mi away
Parks and public landsLas Palomas Wildlife Management Areastate conservation land · 5.6 mi · 136 acresBentsen - Rio Grande Valley State Parkstate park · 11.4 mi · 764 acresSanta Ana National Wildlife Refugenational wildlife refuge · 28.1 miSource: USGS Protected Areas Database (PAD-US)
EarthquakesNone of magnitude 3 or more within 50 miles since 1970Source: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively HighHidalgo County, TX, compared with all US countiesHigher-risk hazardsCold wave Very HighHurricane Very HighHail Very HighIce storm Very HighSource: FEMA National Risk Index (county level)
Air quality44% of days had good air in 2025162 of 365 days measured199 moderate, 4 unhealthy for sensitive groups daysMedian index 52, worst day 140main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Hidalgo County monitors, TX
Internet at home0% of households have a broadband subscription0% have cable, fibre or DSL0% rely on a mobile data plan alone100% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterMcallen Public Utilityserves 189,957 people from surface waterNo health-based violations since 20211 monitoring or reporting violation since 2021Source: US EPA Safe Drinking Water Information System, largest system in the county
Elevation136 ft41 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalMission Regional Medical Center15.6 miPost officeLos Ebanos Post Officeunder a mileTown hallSullivan City Hall1.7 miPoliceSullivan Police Department1.7 miFire stationSullivan City Volunteer Fire Department1.7 miSource: USGS National Structures Dataset
Getting aroundAirportMcAllen Miller International Airport MFE21 miInterstateI-28.8 miUS highwayUS 832.1 miCoachPalmview StripesGreyhound12 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 78565 ZIP area.
