Gaithersburg 20877, 20878, 20879, 20882 Click on a neighborood below to get detailed information about location, history, age, style, price range, schools assignment, and sometimes much more 20878 Ancient Oaks, Haddonfield, Bondbrook (approximately 412 homes) 20878 Willow Ridge, Orchard Hills, Hidden Ponds (approximately 325 homes) 20878 Westleigh, Dufief, Dufief Mill Estates (approximately 1523 homes) 20878 Stonebridge, Dufief Mill, Potomac Ridge, Amberlea Farms (approximately 1920 homes) 20878 Kentlands, Lakelands (approximately 3098 homes) 20878 Quince Haven, Potomac Grove-  (approximately 528 homes) 20878 Potomac Chase, Mills Farm-  (approximately 1033 homes)  20878 Highlands of Darnestown- (approximately 129 homes) 20878 Washingtonian Woods- (approximately 397 homes) 20878 Washingtonian Village/Warther- (approximately 451 homes)