Today 20634, Great Mills MD is count around 13 homes for sale at current average listing price of $382,438. Nearby neighborhoods of 20634 are Hickory Hills, Greenview West Pud, Bay Berry, Chancellors Village, Friendly Pines, Greenview West, Hickory Hills North, None Available, Victorias Grant, Westmeath. Most of 20634 homes are 4 bedrooms with 3 bathrooms.