The Burton–Blackstone–Carey Store is a historic commercial building at 103 State Street in Millsboro, Delaware. It is a 2+1⁄2-story wood-frame structure with vernacular Greek Revival styling. Built c. 1840, it is Millsboro's oldest surviving commercial building. Originally located at the corner of Main and State Streets, it was moved a short distance down State Street in 1918 to make way for the construction of the (now adjacent) building. The Burton–Blackstone–Carey Store has retained much original fabric, including original siding material, most of which is now preserved under more recent metal siding.