Zip Code 78599 — Weslaco, TX

ZIP Code 78599 is associated with Weslaco, TX, in Hidalgo County. The listed population estimate is 35,454; estimated density is 516.1 people per square mile. Among records with population estimates, it ranks #13 of 28 in Hidalgo County and #296 of 1,924 in TX.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (26.218100, -97.990870)

Data MetricLocal Statistic
Postal / Zip Code78599
Primary CityWeslaco
State / ProvinceTX
CountyHidalgo
Total Population35,454
Population Density516.1 people/sq mi
TimezoneAmerica/Chicago

How 78599 Compares

MetricZIP 78599Hidalgo County recordsTX records
Population estimate35,454891,915 (sum)30,188,035 (sum)
Population Density516.1 /sq mi----
County population rank#13 of 28----
State population rank#296 of 1,924----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in TX

ZIP CodeCityDistancePopulation estimate
ZIP 78537Donna5.2 mi51,426
ZIP 78558La Blanca5.5 mi722
ZIP 78543Elsa5.8 mi8,400
ZIP 78570Mercedes5.9 mi34,348
ZIP 78596Weslaco7.7 mi39,518

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →