Derwood is an unincorporated area and census-designated place in east-central Montgomery County, Maryland, United States. It lies just north of Rockville, south-east of Gaithersburg, south-west of Olney, and north-west of the greater Silver Spring area.
Derwood includes the neighbourhoods of Derwood Heights, Derwood Station, Mill Creek Towne, Needwood Estates, Muncaster Manor, Muncaster View, Hollybrooke, Granby Woods, Park Overlook, Preserve at Rock Creek, Redland Crossing, Candlewood Park, Cashell Estates, Avery Forest, Avery Lodge, Avery Village, Bowie Mill Estates, Bowie Mill Park, Winters Run, Redland Station, Rolling Knolls, Emory Grove, and Shady Grove Crossing.
Maryland Route 200 (also known as the Intercounty Connector or ICC) runs directly through central Derwood, including Cashell Estates and areas near Shady Grove Road. Goodwill Industries is based in Derwood.
Derwood has a population of over 15,600 people.