ZIP Codes in Big Spring, TX
Big Spring uses 2 ZIP codes, all in Howard County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Big Spring ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 79720 | standard | Howard | 29,936 |
| 79721 | standard | Howard | 352 |
Finding a ZIP+4 in Big Spring
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 Big Spring 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 Big Spring addresses and download it complete.