667 Area Code

Primary cities: Baltimore, Salisbury, Annapolis, Aberdeen, Towson ... all cities

Cities: Aberdeen, Annapolis, Armiger Gibson Island, Baltimore, Bel Air, Berlin, Bishopville, Brooklyn Park Linthicum, Cambridge, Cardiff, Catonsville, Cecilton, Centreville, Chase, Chesapeake City, Chestertown, Church Hill, Churchville, Cockeysville, Columbia, Crisfield, Crofton, Darlington, Deal Island, Delmar, Denton, Dundalk, Easton, Edgewood, Elkridge, Elkton, Ellicott City, Essex, Fallston, Federalsburg, Fork, Galena, Glen Burnie, Glenwood, Greensboro, Hampstead, Havre De Grace, Hillsboro, Hurlock, Jarrettsville, Marion, Millington, New Windsor, North Beach, North East, Ocean City, Odenton, Oxford, Parkton, Parkville, Perryville, Pikesville, Pocomoke, Port Deposit, Preston, Prince Frederick, Princess Anne, Queenstown, Randallstown, Reisterstown, Ridgely, Rock Hall, Salisbury, Severn, Severna Park, Sharptown, Sherwood Forest, Silver Run, Smith Island, Snow Hill, Solomons, Sparks Glencoe, Sparrows Point, St. Michaels, Stevensville, Still Pond, Sudlersville, Taneytown, Tilghman, Towson, Trappe, Union Bridge, Vienna, Warwick, Waterloo 236, West River, Westminster, Willards, Wingate, Woodlawn, Worthington