Today 20855, Rockville MD is count around 25 homes for sale at current average listing price of $734,707. Nearby neighborhoods of 20855 are Westside At Shady Grove, Westside At Shady Grove Metro, Mill Creek South, None Available, Cashell Estates, Garrett Mews, Mill Creek Towne, Mill Crk Towne East, Olney Outside, Pt Rockville Out Res. 3. Most of 20855 homes are 4 bedrooms with 3 bathrooms.