ZIP Code 78148 — Universal City, TX
78148 is a standard (street delivery) ZIP code serving Universal City, Texas, in Bexar 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 78148 at a glance
| ZIP code | 78148 |
|---|---|
| Primary city | Universal City |
| State | Texas (TX) |
| County | Bexar FIPS 48029 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 22,187 |
| Coordinates | 29.543310, -98.296090 |
How ZIP+4 works in 78148
The four digits after the hyphen encode a delivery segment inside 78148. 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 78148 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 78148.
| ZIP | City | Distance |
|---|---|---|
| 78150 | Jbsa Randolph, TX | 0.9 mi |
| 78154 | Schertz, TX | 1.8 mi |
| 78233 | San Antonio, TX | 4.1 mi |
| 78109 | Converse, TX | 4.4 mi |
| 78239 | San Antonio, TX | 4.4 mi |
| 78108 | Cibolo, TX | 5 mi |
| 78244 | San Antonio, TX | 5.6 mi |
| 78218 | San Antonio, TX | 7.1 mi |
| 78247 | San Antonio, TX | 7.4 mi |
| 78217 | San Antonio, TX | 7.5 mi |
| 78266 | San Antonio, TX | 8 mi |
| 78124 | Marion, TX | 8.7 mi |
Questions about 78148
What is the ZIP+4 code for 78148?
78148 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 78148, you need to look up a specific street address to get them.
What city is 78148?
78148 is assigned to Universal City, Texas, in Bexar 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.