List of All ZIP Codes in Howard County Census Division | ||||
|---|---|---|---|---|
| Map Index | ZIP Code Code | ZIP Code Name | ||
| 20701 | Annapolis Junction | |||
| 20723 | Laurel | |||
| 20759 | Fulton | |||
| 20763 | Savage | |||
| 20777 | Highland | |||
| 20794 | Jessup | |||
| 21029 | Clarksville | |||
| 21036 | Dayton | |||
| 21042 | Ellicott City | |||
| 21043 | Ellicott City | |||
| 21044 | Columbia | |||
| 21045 | Columbia | |||
| 21046 | Columbia | |||
| 21075 | Elkridge | |||
| 21104 | Marriottsville | |||
| 21723 | Cooksville | |||
| 21737 | Glenelg | |||
| 21738 | Glenwood | |||
| 21794 | West Friendship | |||
| 21797 | Woodbine | |||