Olney, MD

ZIP code 20830 corresponds to the town of Barnesville, Maryland. This rural area is characterized by rolling hills and picturesque farmland. Key landmarks in this ZIP code include the historic Beall-Dawson House Museum, which offers insight into 19th-century life in the area, as well as the Monocacy National Battlefield, a preserved Civil War site that attracts history enthusiasts and nature lovers alike.