Home › Top 6 Gas Stations in Parkville, Maryland Find best Gas Stations in Parkville, Maryland, with all necessary contact information, including addresses, phone numbers, working hours, map locations, and website links. Marathon Gas - Parkville (MD 21234) US, Parkville, MD 2123410100 Harford Rd Shell - Parkville (MD 21234) US, Parkville, MD 212346708 Harford Rd Carroll Motor Fuels - Parkville (MD 21234) US, Parkville, MD 212348600 Old Harford Rd Bill's CITGO US, Parkville, MD 212347940 Harford Rd Sunoco Gas Station - Parkville (MD 21234) US, Parkville, MD 212348401 Harford Rd bp - Parkville (MD 21234) US, Parkville, MD 212349300 Harford Rd