1. Calvert County Detention Center
325 Stafford Rd, Barstow, MD 20610
Coordinate: 38.536274,-76.615524
Phone: (410) 535-4300
2. Calvert County Mosquito Control
4665 Hallowing Point Rd, Barstow, MD 20610
Coordinate: 38.525276,-76.61639
Phone: (410) 535-6924