ZIP Codes in Lancaster, TX
Lancaster uses 2 ZIP codes, all in Dallas County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Lancaster ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 75134 | standard | Dallas | 19,045 |
| 75146 | standard | Dallas | 25,097 |
Finding a ZIP+4 in Lancaster
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 Lancaster 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 Lancaster addresses and download it complete.