Car Key Replacement Dallas, Texas, is a mobile service that visits our customers where they are. We then tackle their problems without delays. We cover a wide area of Dallas, Collin and Denton counties. The Zip Codes we frequently offer services are 75201, 75202, 75203, 75204, 75205, 75206, 75207, 75208, 75209, and 75210. If you live outside this area and need us to come out to your location, just give us a call.