ZIP Code 75021 — Denison, TX
75021 is a standard (street delivery) ZIP code serving Denison, Texas, in Grayson 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 75021 at a glance
| ZIP code | 75021 |
|---|---|
| Primary city | Denison |
| State | Texas (TX) |
| County | Grayson FIPS 48181 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 9,173 |
| Coordinates | 33.726860, -96.475520 |
How ZIP+4 works in 75021
The four digits after the hyphen encode a delivery segment inside 75021. 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 75021 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.
Other ZIP codes in Denison
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 75021.
| ZIP | City | Distance |
|---|---|---|
| 74733 | Colbert, OK | 7.2 mi |
| 75414 | Bells, TX | 7.5 mi |
| 75020 | Denison, TX | 8 mi |
| 74720 | Achille, OK | 9.1 mi |
| 74747 | Kemp, OK | 9.3 mi |
| 75090 | Sherman, TX | 9.3 mi |
| 75479 | Savoy, TX | 10.3 mi |
| 74741 | Hendrix, OK | 11.5 mi |
| 74731 | Cartwright, OK | 11.7 mi |
| 74730 | Calera, OK | 12.5 mi |
| 74753 | Platter, OK | 12.9 mi |
| 75476 | Ravenna, TX | 13.4 mi |
Questions about 75021
What is the ZIP+4 code for 75021?
75021 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 75021, you need to look up a specific street address to get them.
What city is 75021?
75021 is assigned to Denison, Texas, in Grayson 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.