There are roughly 90+ advertised subdivisions in the 20772 and 20774 zip codes of Upper Marlboro, Maryland.  This includes areas such as Largo, Kettering, The Town of Upper Marlboro and Greater Upper Marlboro. Here's a list I compiled that may help you recall a neighborhood you may have driven by and liked.

Balmoral

Beachtree

Beacon Hill

Bellehaven Estates

Belmont Crest

Brandywine Country

Brock Hall

Brookwood

Cameron Grove

Canter Creek

Charles Hill

Cherry Tree Estates

Chester Grove

Claggett Landing

Collington Estates

Croom Acres

Croom Station

Dower Ridge Estates

Dower Village

Drumsheugh

Duvall

Edward Estates

Enterprise Forest

Equestrian Estates

Estonian Estates

Eversfield

Foxchase

Graystone at Marlborough

Greens of Marlton

Heritage Glen

Hollaway Estates

Kettering

Kings Creek Ests

Kingston Manor

La Dova Heights

Largo

Largo Knolls

Linwood Knolls

Little Washington

Manor Knolls

Marlboro Downs

Marlboro Meadows

Marlboro Pointe

Marlboro Ridge

Marlboro Riding

Marlborough South

Marlton

Marwood

Maryvale

Melwood

Melwood Springs

Norbourne Park

New Orchard Estates

North Roblee Acres

Northhampton

Oak Creek

Oak Creek Club

Oak Creek Golf Course

Palisades

Parkside At Westphalia

Perrywood

Poplars

Poplar Ridge

Presidential Heights

Queen Anne Estates

Queen Anne Knolls

Queensland

Ramblewood

Rambling Hills

Roblee Acres

Rosaryville Estates

Rustic Ridge

Sherwood Forest

Smith Home Farm

Springdale

St. Johns Wood

Stratford Estates

Strawberry Hills

The Highlands

Tyrol Estates

Village of Oak Grove

Villages of Marlborough

Villages of Mellwood

Vista Woods

West End Farms

Westphalia Estates

Westphalia Woods

Williamsburg Estates

Winshire

Woodyard Estates