Town Hall Address 5332 E. Highway 83 Rio Grande City, TX 78582 United States- Starr County Website https://cityofrgc.com Fire District 956-487-5312 910 East Main St. Rio Grande City, TX 78582 United States Town Clerk 956-487-0672 5332 E. Highway 83 Rio Grande City, TX 78582 United States Tax Collector 956-487-0672 5332 E. Highway 83 Rio Grande City, TX 78582 United States County Starr