ZIP Code 76939 — Knickerbocker, TX
76939 is a standard (street delivery) ZIP code serving Knickerbocker, Texas, in Tom Green County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 76939 at a glance
| ZIP code | 76939 |
|---|---|
| Primary city | Knickerbocker |
| State | Texas (TX) |
| County | Tom Green FIPS 48451 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Coordinates | 31.268550, -100.590280 |
How ZIP+4 works in 76939
The four digits after the hyphen encode a delivery segment inside 76939. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 76939 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 76939.
| ZIP | City | Distance |
|---|---|---|
| 76904 | San Angelo, TX | 10.3 mi |
| 76909 | San Angelo, TX | 14 mi |
| 76908 | Goodfellow Afb, TX | 15.8 mi |
| 76935 | Christoval, TX | 16.5 mi |
| 76903 | San Angelo, TX | 17.2 mi |
| 76901 | San Angelo, TX | 17.8 mi |
| 76941 | Mertzon, TX | 18.2 mi |
| 76957 | Wall, TX | 18.3 mi |
| 76902 | San Angelo, TX | 20.6 mi |
| 76905 | San Angelo, TX | 22.7 mi |
| 76934 | Carlsbad, TX | 24.4 mi |
| 76936 | Eldorado, TX | 26.5 mi |
Questions about 76939
What is the ZIP+4 code for 76939?
76939 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 76939, you need to look up a specific street address to get them.
What city is 76939?
76939 is assigned to Knickerbocker, Texas, in Tom Green County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.