Today 21012, Arnold MD is count around 18 homes for sale at current average listing price of $1,056,205. Nearby neighborhoods of 21012 are Hidden Ridge, Ashby, Bay Hills, Belvedere Beach/harmony, Dorado Hills, Fernbrook, Harting Farm, Kimberly Hills, Moorings On The Magothy, None Available. Most of 21012 homes are 4 bedrooms with 3 bathrooms.