As of today, , there are 21 properties for sale in the 21791 area and 21 properties listed for sale in the city of Union Bridge. This single family residential home at 4330 Bark Hill Rd in ZIP code 21791 was last listed for $—. This is 100% below the current $395,000 median price for Union Bridge and 100% below the median of $395,000 for the ZIP code. Of the 21 properties for sale in Union Bridge, 21 are single family homes and 0 are condos. 4330 Bark Hill Rd is a single family residential home that is approximately 2,914 square feet, 25% above the city median of 2,340 and 25% above the 21791 ZIP code median of 2,340. The price per Sqft was — which is 100% below the current median price in 21791 of $146 and 100% below the Union Bridge median of $146 per square foot.