Today 21771, Mount Airy MD is count around 42 homes for sale at current average listing price of $763,235. Nearby neighborhoods of 21771 are None Available, Buffalo Manor, Harvest Ridge, Twin Arch Crossing, Catoctin View, Falling Green, Fields Of Nottingham, Molesworth Hills, Mt Airy Village, Ravenwood Estates. Most of 21771 homes are 4 bedrooms with 3 bathrooms.