Columbia, MD Area Codes
Columbia is served by area codes 410, 443 and 667. It is in Maryland, Howard County. About 99,756 people live in its 3 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 410, 443, 667 |
| State / province | Maryland |
| County | Howard County |
| Population | 99,756 |
| ZIP codes | 3 |
| Time zone | Eastern |
| Coordinates | 39.1951, -76.8474 |
What area code is Columbia in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 410 | Maryland | 3,326,477 | — |
| 443 | Maryland | 3,254,789 | Yes |
| 667 | Maryland | 3,326,477 | Yes |
ZIP codes in the code footprint
Nearby towns and their area codes
Jessup 410, 443, 667Ellicott City 410, 443, 667Elkridge 410, 443, 667Clarksville 410, 443, 667Hanover 410, 443, 667Laurel 227, 240, 301, 410, 443, 6Burtonsville 227, 240, 301Catonsville 410, 443, 667
How to dial
Dial 410 + 7 digits for a number in Columbia, or +1 410 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.