Today 21771, Mount Airy MD is count around 31 homes for sale at current average listing price of $773,009. Nearby neighborhoods of 21771 are None Available, Ridgely Estates, Friendly Acres, Manorwood, Mill Bottom, Mt Airy Village, Ravenwood Estates, Ridgeville Heights, Samhill Estates, Sherwood Forest. Most of 21771 homes are 4 bedrooms with 3 bathrooms.