ZIP Code 76573 — Schwertner, TX
76573 is a standard (street delivery) ZIP code serving Schwertner, Texas, in Williamson 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 76573 at a glance
| ZIP code | 76573 |
|---|---|
| Primary city | Schwertner |
| State | Texas (TX) |
| County | Williamson FIPS 48491 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Coordinates | 30.818640, -97.502260 |
How ZIP+4 works in 76573
The four digits after the hyphen encode a delivery segment inside 76573. 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 76573 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 76573.
| ZIP | City | Distance |
|---|---|---|
| 76511 | Bartlett, TX | 4.9 mi |
| 76537 | Jarrell, TX | 6.2 mi |
| 76530 | Granger, TX | 8.6 mi |
| 76534 | Holland, TX | 9 mi |
| 76571 | Salado, TX | 9.3 mi |
| 78674 | Weir, TX | 11.5 mi |
| 78626 | Georgetown, TX | 11.9 mi |
| 76523 | Davilla, TX | 13.3 mi |
| 76554 | Little River Academy, TX | 13.5 mi |
| 78633 | Georgetown, TX | 16 mi |
| 76513 | Belton, TX | 16.5 mi |
| 76527 | Florence, TX | 17.4 mi |
Questions about 76573
What is the ZIP+4 code for 76573?
76573 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 76573, you need to look up a specific street address to get them.
What city is 76573?
76573 is assigned to Schwertner, Texas, in Williamson 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.