Welcome to Dave’s Downtown Conoco, the only full-service gas station in Dubuque! Not only are we the only gas station that will pump your gas for you, we are also one of the only gas station and auto service center combinations in Dubuque. We are conveniently located in the heart of downtown Dubuque, located just a few steps from IBM, Prudential, the post office, the Diamond Joe Casino, and many more! Visit us for auto service, fuel, or for coffee and a snack while you shop downtown. Thanks for visiting. We hope to see you soon!