Costco 2024-12-22 Roadnow click anywhere on map to find more poi nearby Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Costco Unionville, MD 5.19 mi Walkersville, MD 7.75 mi New Market, MD 8.94 miInterstate highway exits close to Costco Exit 55, i70 2.18 mi Exit 56, i70 2.37 mi Exit 54, i70 3.15 miInterstate highways close to Costco i70 map 2.18 mi i270md map 4.14 mi i81 map 40.15 miState roads close to Costco MD 144 map 1.44 mi US 15 MD map 2.26 mi MD 26 map 2.49 mi