| Primary City | Ellicott City | |
| Population | 65,834 | |
| State | Maryland | |
| County | Howard County | |
| Current Time | ||
| Zip Codes | 21041-21043 | |
| Area Codes | 410, 410 |
Neighbouring Zip Codes
ZIP Code: 20794
Jessup, Maryland
ZIP Code: 20866
Burtonsville, Maryland
ZIP Code: 21250
Baltimore, Maryland
ZIP Code: 21228
Catonsville, Maryland
ZIP Code: 20904
Silver Spring, Maryland
ZIP Code: 21046
Columbia, Maryland
ZIP Code: 21045
Columbia, Maryland
ZIP Code: 21043
Ellicott City, Maryland
ZIP Code: 20726
Laurel, Maryland
ZIP Code: 20725
Laurel, Maryland
ZIP Code: 20832
Olney, Maryland
ZIP Code: 20830
Olney, Maryland
ZIP Code: 21017
Belcamp, Maryland
ZIP Code: 20763
Savage, Maryland
ZIP Code: 20860
Sandy Spring, Maryland
ZIP Code: 20861
Ashton, Maryland
Neighbouring Cities
Columbia, Ashton-Sandy Spring, Burtonsville, Olney, Savage, Cloverly, Ilchester, Laurel, Jessup, Fairland, Fort George G Mead Junction, Layhill, Rossmoor, Leisure World, Catonsville