ZIP Code 75421 — Brookston, TX
75421 is a standard (street delivery) ZIP code serving Brookston, Texas, in Lamar 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 75421 at a glance
| ZIP code | 75421 |
|---|---|
| Primary city | Brookston |
| State | Texas (TX) |
| County | Lamar FIPS 48277 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 850 |
| Coordinates | 33.644800, -95.718090 |
How ZIP+4 works in 75421
The four digits after the hyphen encode a delivery segment inside 75421. 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 75421 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 75421.
| ZIP | City | Distance |
|---|---|---|
| 75470 | Petty, TX | 6.3 mi |
| 75460 | Paris, TX | 6.7 mi |
| 75477 | Roxton, TX | 7.9 mi |
| 75486 | Sumner, TX | 8 mi |
| 75446 | Honey Grove, TX | 10.2 mi |
| 75415 | Ben Franklin, TX | 12.5 mi |
| 75462 | Paris, TX | 13.6 mi |
| 75441 | Enloe, TX | 15.3 mi |
| 75411 | Arthur City, TX | 15.7 mi |
| 75492 | Windom, TX | 16.6 mi |
| 75469 | Pecan Gap, TX | 17.1 mi |
| 75473 | Powderly, TX | 17.8 mi |
Questions about 75421
What is the ZIP+4 code for 75421?
75421 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 75421, you need to look up a specific street address to get them.
What city is 75421?
75421 is assigned to Brookston, Texas, in Lamar 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.