Chewsville, MD

Zip code 21721 covers the area of the town of Chewsville, Maryland. This small town is known for its historic sites, including the Antietam National Battlefield, which commemorates the bloodiest single-day battle in American history during the Civil War. Other notable landmarks in the area include the Burnside's Bridge and the Pry House Field Hospital Museum, offering visitors a glimpse into the area's rich history.