Costco Gas Prices in the DC / DMV area LocationRegularPremium BELTSVILLE, MD 10925 BALTIMORE AVE BELTSVILLE, MD 20705-21172.973.69 BRANDYWINE, MD 16006 CRAIN HWY BRANDYWINE, MD 20613-80812.993.53 CHANTILLY, VA 14390 CHANTILLY CROSSING LN CHANTILLY, VA 20151-21173.123.84 22 more rows