ZIP Codes in Westover, MD
Westover uses 2 ZIP codes, all in Somerset County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Westover ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 21871 | standard | Somerset | 1,764 |
| 21890 | standard | Somerset | 3,289 |
Finding a ZIP+4 in Westover
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 Westover street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Westover addresses and download it complete.