Howard County, Maryland
20 ZIP codes · 250.95 sq mi of land · FIPS 24027
| Population | 336,328 |
|---|---|
| State | Maryland |
| FIPS code | 24027 |
| Time zone | Eastern |
| Land area | 250.95 sq mi |
| Center (lat, long) | 39.2523, -76.9244 |
Area codes in this area
These are the area codes that most often serve Howard County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
Columbia · 104,338Ellicott City · 75,257Laurel · 29,798Elkridge · 26,283Annapolis JunctionFultonSavageHighlandJessupClarksvilleDaytonMarriottsvilleCooksvilleGlenelgGlenwoodWest FriendshipWoodbine
ZIP codes in Howard County
20701 Annapolis Junction20723 Laurel20759 Fulton20763 Savage20777 Highland20794 Jessup21029 Clarksville21036 Dayton21042 Ellicott City21043 Ellicott City21044 Columbia21045 Columbia21046 Columbia21075 Elkridge21104 Marriottsville21723 Cooksville21737 Glenelg21738 Glenwood21794 West Friendship21797 Woodbine
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.