ZIP Codes in Gilmer, TX
Gilmer uses 2 ZIP codes, all in Upshur County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Gilmer ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 75644 | standard | Upshur | 12,774 |
| 75645 | standard | Upshur | 10,400 |
Finding a ZIP+4 in Gilmer
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 Gilmer 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 Gilmer addresses and download it complete.