ZIP Codes in Galveston, TX
Galveston uses 4 ZIP codes, all in Galveston County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 4 Galveston ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 77550 | standard | Galveston | 23,489 |
| 77551 | standard | Galveston | 21,696 |
| 77554 | standard | Galveston | 10,414 |
| 77555 | standard | Galveston | 2 |
Finding a ZIP+4 in Galveston
Knowing which of these 4 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 Galveston 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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