Union Bridge, MD

ZIP code 21791 is located in Union Bridge, Maryland. This area is home to the historic Union Bridge, a stone arch bridge built in 1877 that spans over the Monocacy River. The ZIP code also encompasses the New Windsor Service Center, a popular spot for travelers along Route 31. With its charming small-town feel and picturesque natural surroundings, ZIP code 21791 is a quaint and inviting community.