ZIP Code 78933 — Cat Spring, TX
78933 is a standard (street delivery) ZIP code serving Cat Spring, Texas, in Colorado 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 78933 at a glance
| ZIP code | 78933 |
|---|---|
| Primary city | Cat Spring |
| State | Texas (TX) |
| County | Colorado FIPS 48089 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,395 |
| Coordinates | 29.772090, -96.338290 |
How ZIP+4 works in 78933
The four digits after the hyphen encode a delivery segment inside 78933. 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 78933 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 78933.
| ZIP | City | Distance |
|---|---|---|
| 78935 | Alleyton, TX | 8 mi |
| 77474 | Sealy, TX | 9.2 mi |
| 78950 | New Ulm, TX | 12.8 mi |
| 77473 | San Felipe, TX | 14.1 mi |
| 78934 | Columbus, TX | 14.5 mi |
| 77418 | Bellville, TX | 15.2 mi |
| 77412 | Altair, TX | 15.9 mi |
| 78943 | Glidden, TX | 16.2 mi |
| 77434 | Eagle Lake, TX | 17 mi |
| 77454 | Lissie, TX | 17.1 mi |
| 78944 | Industry, TX | 18.4 mi |
| 77485 | Wallis, TX | 18.8 mi |
Questions about 78933
What is the ZIP+4 code for 78933?
78933 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 78933, you need to look up a specific street address to get them.
What city is 78933?
78933 is assigned to Cat Spring, Texas, in Colorado 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.