As of , there are 28 properties listed for sale in the city of Preston and 28 properties listed for sale in the ZIP code 21655. Those 28 Preston properties include 28 single family homes and 0 condos. This residential (general) (single) home located at 23556 Gilpin Rd in 21655 was last listed for $—. This is 100% below the median of $224,450 for that ZIP code and 100% below the current median price of $224,450 for Preston. 23556 Gilpin Rd is roughly 2,585 square feet, which is 36% above the Preston median of 1,899 and 36% above the 21655 ZIP code median of 1,899. This property's price per Sqft was —, which is 100% below the current median price in 21655 of $114 and 100% below the Preston median of $114 per Sqft.