Zip Code 78570 — Mercedes, TX

ZIP Code 78570 is associated with Mercedes, TX, in Hidalgo County. The listed population estimate is 34,348; estimated density is 176.4 people per square mile. Among records with population estimates, it ranks #15 of 28 in Hidalgo County and #314 of 1,924 in TX.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (26.171490, -97.911200)

Data MetricLocal Statistic
Postal / Zip Code78570
Primary CityMercedes
State / ProvinceTX
CountyHidalgo
Total Population34,348
Population Density176.4 people/sq mi
TimezoneAmerica/Chicago

How 78570 Compares

MetricZIP 78570Hidalgo County recordsTX records
Population estimate34,348891,915 (sum)30,188,035 (sum)
Population Density176.4 /sq mi----
County population rank#15 of 28----
State population rank#314 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 78559La Feria5.5 mi12,169
ZIP 78599Weslaco5.9 mi35,454
ZIP 78579Progreso6.1 mi2,039
ZIP 78596Weslaco7.0 mi39,518
ZIP 78562La Villa8.1 mi3,211

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 →