Town Hall Address 400 South Ohio Mercedes, TX 78570 United States- Hidalgo County Website https://cityofmercedes.com Zoning 956-565-3114 Ext. 130 400 South Ohio Mercedes, TX 78570 United States Fire District 956-565-7755 105 N. Ohio Mercedes, 78570 United States Town Clerk 956-565-3114 400 South Ohio Mercedes, TX 78570 United States Water 832-756-2143 11301 Fallbrook Dr., #302 Houston, 77065 United States Sewer 832-756-2143 11301 Fallbrook Dr., #302 Houston, 77065 United States Tax Collector 956-565-3114 400 South Ohio Mercedes, TX 78570 United States Code Enforcement 956-565-3114 Ext. 133 400 South Ohio Mercedes, TX 78570 United States County Hidalgo