Cities and Towns in Howard County, Maryland
Founded in 1851, Howard County is one of 23 counties in the state of Maryland. Historically, Howard County was formed from parts of Anne Arundel County and Baltimore County. The city of Ellicott City is the county seat. With FIPS code of 27, Howard County has a population of 334,529 and area of 254 square miles (658 km²).
List of all cities in Howard County, MD alphabetically
| City/Town | Postal Code | Area Code |
| Annapolis Junction, MD | 20701 | 410/443/667 |
| Cheltenham, MD | 20588 | 202 |
| Clarksville, MD | 21029 | 410/443/667 |
| Columbia, MD | 20588 | 202 |
| 21044 | 410/443/667 | |
| 21045 | 410/443/667 | |
| 21046 | 410/443/667 | |
| Cooksville, MD | 21723 | 410/443/667 |
| Daniels, MD | 21043 | 410/443/667 |
| Dayton, MD | 21036 | 410/443/667 |
| Dept HS, MD | 20588 | 202 |
| DHS, MD | 20588 | 202 |
| Elkridge, MD | 21075 | 410/443/667 |
| Ellicott, MD | 21041 | 410/443/667 |
| 21042 | 410/443/667 | |
| 21043 | 410/443/667 | |
| Fulton, MD | 20759 | 410/443/667 |
| Glenelg, MD | 21737 | 410/443/667 |
| Glenwood, MD | 21738 | 410/443/667 |
| Granite, MD | 21163 | 410/443/667 |
| Hanover, MD | 21075 | 410/443/667 |
| Henryton, MD | 21163 | 410/443/667 |
| Highland, MD | 20777 | 301/240/227 |
| Ilchester, MD | 21043 | 410/443/667 |
| Jessup, MD | 20794 | 410/443/667 |
| Laurel, MD | 20723 | 301/240/227 |
| Lisbon, MD | 21765 | 410/443/667 |
| Oella, MD | 21043 | 410/443/667 |
| Savage, MD | 20763 | 410/443/667 |
| Scaggsville, MD | 20723 | 301/240/227 |
| Simpsonville, MD | 21150 | 410/443/667 |
| West Friendship, MD | 21794 | 410/443/667 |
| Woodbine, MD | 21797 | 410/443/667 |
| Woodstock, MD | 21163 | 410/443/667 |
