what is weslaco zip code
78596 Zip Code (Weslaco, TX) Detailed Profile. Cities: Weslaco, TX (24.43%), Olivarez, TX (5.84%), Progreso Lakes, TX (2.97%), Llano Grande, TX (2.70%), Midway North, TX (2.62%), Mila Doce, TX (1.53%), Progreso, TX (1.37%), Midway South, TX (1.07%), Villa Verde, TX (0.56%), Mercedes, TX (0.22%) County: Hidalgo County, TX.