Willoughby Woods, MD
- Aberdeen Hills
- Adams Heights
- Alton Homes
- Baldwin Manor
- Bar Kess Heights
- Braemar
- Burkley Manor
- Burns Corner
- Carsins
- Carsins Run Estates
- Carsinwood
- Chapel Hills
- Chesapeake Acres
- Dol Ray
- Green Valley
- Hamilton Court
- Hill Land
- Hillcrest Manor
- Hillside
- Krouseland
- Locksley Manor
- Maxa Woods
- North Deen
- North Hills
- Paradise Heights
- Paradise Manor
- Park Ridge Estates
- Ramsgate Estates
- Royal Acres
- Sherwood Homes
- Swan Meadows
- Windemere Estates
- Woodbrook
- Bayside Village
- Oakington
- Oakington Manor
- Abingdon Reserve
- Box Hill North
- Box Hill South
- Bradford Barrens
- Broadview
- Bynum Hills
- Bynum Overlook
- Clearview
- Constant Branch
- Constant Friendship
- Country Walk
- Crisfield Crossing
- Emmorton
- Hunters Run
- Ivy Hill
- Laurel Valley
- Laurel Woods
- Lou Mar Estates
- Mountain View Estates
- Norris Corner
- Northridge
- Oaks of Harford
- Osborns Ruins
- Overview Manor
- Philadelphia Station
- Royal Heights
- Singer
- Singer Woods
- Temple Hills
- The Cedars
- The Pointe
- Village of Bynum Run
- White Oak Crest
- Woodale Homes
- Woodland Run
- Woodsdale
- Woodsdale Meadows
- Bakersfield
- Cross Country Estates
- Eagle View
- Foxwood
- Franklins Chance
- Glen Elyn
- Green Road Manor
- Greendale Estates
- Haddon Hurst
- Harford Hunt Manor
- Hazelwood
- Hess
- Hunting Ridge
- Huntington
- Orchard Lakes
- Pleasant Prospect at Glen Elyn
- Rutledge
- Taylor
- Upper Crossroads
- Woodsbrook
- Amyclae Estates
- Bel Air North
- Bel Air South
- Bel Forest
- Big Woods
- Bradford Village
- Brentwood Park
- Brierwood
- Bright Oaks
- Bynum
- Camelot
- Cedar Spring
- Cedarwood
- Coffman
- Colonial Acres
- Country Club Park
- Country Village
- Drexel
- English Country Manor
- Evergreen Heights
- Fairmont
- Fairway
- Fairwind Farms
- Fairwood Heights
- Forest Lawn
- Fountain Glen
- Fountain Green
- Fountain Green Estates
- Fountain Green Heights
- Foxborough Farms
- Frogtown
- Gibson
- Gibson Manor
- Glenangus
- Glengate
- Glenwood
- Glenwood Garth
- Green Ridge
- Greenbrier Hills
- Grose Close
- Hampton Ridge
- Harford Dale
- Harford Village
- Harford Woods
- Harlan Square
- Harold Heights
- Heritage Woods
- Hickory
Aberdeen
Aberdeen Proving Ground
Abingdon
Bel Air
- Hickory Hills
- Hill-N-Dale
- Hillview
- Homestead Village
- Howard Park
- Kings Charter
- Knollwood
- Leew Woods
- Lindill Estates
- Longmeadow
- Lyns Rest
- Magness
- Majors Choice
- Maryland Ponderosa
- Marywood
- Melrose
- Michaels Corner
- Moores Mill
- Moorland
- Morgan Park
- North Bel Air
- Oak Dale
- Oak Ridge
- Old Dixie Manor
- Old Fields
- Parliament Ridge
- Parsons Ridge
- Pine Crest
- Plumtree Estates
- Prospect Heights
- Roland Heights
- Roland Place
- Sable Woods
- Scots Fancy
- Shamrock
- Shucks Corners
- Silver Spring Heights
- South Bel Air
- Southampton
- Stonehedge
- Stoneleigh
- Timberlea
- Todd Lakes
- Tollgate Estates
- Tudor Forest
- Tudor Manor
- Upper Crest Estates
- Valley View
- Village of Thomas Run
- Voshelle
- Wakefield Manor
- Wakefield Meadows
- Wakely Terrace
- Warwick
- Watervale
- Wellington Woods
- West Riding
- White Oak
- Woodside
- Worthington Heights
- Bush
- Bush River
- Carsin Vale
- Crestwood Acres
- Creswell
- Happy Knoll
- Harford Furnace
- Henley Park
- Long Bar Harbor
- Mount Bush Estates
- Pembrook
- Riverside
- Riverside Village of Church Creek
- Stoney Forest Estates
- Village of Church Creek
- Bagley
- Bagleys Venture
- Bel Air Acres
- Claggerts Forest
- Dunwood
- Exeter Green
- Fox Bow
- Hidden Valley
- Indian Princess
- Joppa Hills
- Kingswood
- Locust Knoll
- Lynchs Corner
- Millwood
- Open Acres Manor
- Pleasant Hills
- Spring Hill Farms
- Stockton
- Stockton Green
- Stoneybrook
- Twin Brook Estates
- Vale
- Vale Hills
- Valewood Estates
- West Grove
- Wildwood
- Wilna
- Wimbledon
- Winters Run
- Woodcrest
- Woodridge Manor
- Aldino
- Allendale Estates
- Bodt Corner
- Bramblewood
- Calvary
- Campus Hill Farms
- Campus Hills Estates
- Campus Valley Estates
- Carsins Run
- Chatham
- Cool Spring
- Corns Manor
- Deerhaven
- Eagle Estates
- Friendship Heights
- Grafton Heights
- Harford Ranchettes
- Hemlock Ridge
- Heritage Estates
- Holly Haven
- Hopewell Village
- Kalmia
- Kirkwood Manor
- Level
- Level Terrace
- Locust Hill Estates
- Meadow Springs
- Meadowbrook
- Montreal Acres
- Moxley
- Moxley Acres
- Oakwood
- Pegasus Estates
- Priestford Hills
- Rolling Green
- Springhill
Belcamp
Benson
Churchville
- Thomas Run
- Todd Estates
- Woodside
- Conowingo Village
- Bald Hill
- Berkley
- Broad Creek Park
- Castleton
- Clearview Court
- Day Meadows
- Deer Creek Estates
- Deerfield
- Dublin
- Dublin Manor
- Gallions Corner
- Gladstone Acres
- Glenville
- Hopkins Corner
- Lafayettes Crossing
- McCanns Corner
- Millers Store
- Noble Mill
- Nobles Mill Estates
- Poole
- Poplar Grove
- Rock Manor
- Sturgill
- Wilson Mill
- Ashby Place
- Courts of Harford Square
- Edgewater Village
- Edgewood Heights
- Edgewood Meadows
- Harbour Oaks
- Harford Commons
- Harford Square
- Holman Manor
- Johnson Manor
- Martin Manor
- McComas
- Meadowood
- Rivershore
- Scholar Woods
- Stoneleigh Square
- The Timbers
- Trimble Fields
- Van Bibber
- Van Bibber Manor
- West Shore
- Willoughby Court
- Woodbridge Center
- Amoss
- Belle Meade
- Bellvale
- Brandywine Farms
- Briar Ridge
- Brook Hill Farms
- Charles Manor
- Cloverdale
- Falls Crest
- Fallsmont
- Gunpowder Farms
- Harvest Hills
- Lancaster Corner
- Laurel Brook
- Laurelvale
- Montford Glen
- Oakmont
- Parkshire
- Perry Hall Estates
- Pleasantville
- Powder Mill Addition
- Putnam
- Putnam Hill
- Putnam View Estates
- Putnam Village
- Rochelle Meadows
- Rockdale Manor
- Round Acres
- Scarff
- Springdale
- Strathmore
- Tall Oak Manor
- White House Park
- Willows
- Woodfield
- Chrome Hill Estates
- Coopstown
- Fairview
- Ferncliff
- Forest Lake
- Harford Estates
- High Point
- High Point Estates
- High Point Manor
- Highfield Park
- Klein
- Martindale
- Michaels Meadows
- Pheasant Ridge
- Pinehurst
- Ridgecroft
- Ridgeview
- Rock Acres
- Rock Spring
- Seven Cedars
- Sharon
- Sharon Acres
- Sharon Hill
- Stirrup Run
- The Pond
- Village Manor
- Wales of Harford
- Harford Landing
- Harford Manor
- Old Baltimore
- Willoughby Woods
- Bayview Estates
- Crestview
- Earlton
- Emerson Heights
- Fair Hill
- Foxridge
- Foxridge West
- Garland
- Glenn Heights
- Glenora
- Grace Harbour
- Havre de Grace Heights
- Lapidum
- Lapidum Heights
- Loch Leven
- Meadowvale
- Meadowvale Manor
- Orchardview Estates
- Osborne
- Quaker Hills
- Robin Hood Manor
- Rock Run
Darlington
Edgewood
Fallston
Forest Hill
Gunpowder
Havre De Grace
- Shawnee Brook South
- Silver Acres
- Skyview Estates
- Susquehanna River Hills
- Swan Creek
- Webster
- Webster Village
- Advocate Hill Farms
- Baldwin Hills
- Chadwick
- Charbonnet
- Chrome Hill
- Clear Spring Estates
- Clover Field
- Cool Meadows Farms
- Coventry Meadows
- Deer Meadows
- Dulaney Ridge
- Federal Hill
- Federal Hill Heights
- Fox Meadows
- Fox Meadows Purchase
- Fox Meadows Woods
- Furnace
- Green Valley
- Greenfields
- Harford Downs
- Harford Heritage
- Highview Estates
- Hoerr
- Hunt Crest
- Hy-Crest
- Jarrettswood
- Kinhart Manor
- Madonna
- Madonna Hills
- Madonna Manor
- Meadowlark Estates
- Midsummer Hill
- North Bend Heights
- North Harford Heights
- Northampton
- Parkwood
- Quail Hills
- Quiet Inheritance
- Rolling Knolls
- Rush Manor
- Spooners Creek
- Spring Meadows
- Steeplechase Manor
- Twin Ridge Estates
- Annes Delight
- Clayton
- Clayton Manor
- Cochran Hills
- Green Acres
- Green Springs Hills
- Happy Acres
- Joppa Acres
- Joppatowne
- McGuigan Park
- Shannon Heath
- Woodlea
- Harford Heights
- Valleybrook
- Woodlyn Meadows
- Beckley Estates
- Amos Mill
- Carea
- Coldstream
- Nestling Wind
- Willwood
- Wilsons Choice
- Havre de Grace
- Chelsea
- Forest Greens
- Michaelsville
- Perrywood
- Ripkins Corner
- Belle Farm Heritage
- Bobs Flow
- Bushs Corner
- Eden Hills
- Five Forks
- Graceton
- Harkins
- Ady
- Ady Estates
- Cherry Hill
- Cherrywood Estates
- Chestnut Hill
- Deer Park
- Delano Acres
- Dunsen Heights
- Harford Hills
- Highland Ridge
- Highland View
- Kiah Estates
- Minefield
- Pylesville
- Rockridge Forest
- Saint Anne
- Scenic View
- Shawnee
- Sherrill Gardens
- Viking Highlands
- Whispering Woods
- Clear Acres
- Kenwood Farm Estates
- Lincrest
- Mountain
- Blackhorse
- Bradenbaugh
- Bradenbaugh Manor
- Drybranch
- Farmington
- Holiday Hills
- Indian Hills
- Ivory Mill
- Meadow Stream
- Norrisville
- North Green Ridge
- Old York Manor
- Shawsville
- Shawsville Acres
- Sutton Manor
- Cooper
- Macton
- Mill Green
- Mill Green Acres
- Mill Stone Estates
- Mount Vernon Estates
- Prospect
- Scarboro
- Spring House Estates