ZIP Codes in Bel Air, MD
Bel Air uses 2 ZIP codes, all in Harford County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Bel Air ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 21014 | standard | Harford | 38,707 |
| 21015 | standard | Harford | 30,013 |
Finding a ZIP+4 in Bel Air
Knowing which of these 2 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Bel Air street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
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