ZIP Code 78123 — Mcqueeney, TX
78123 is a standard (street delivery) ZIP code serving Mcqueeney, Texas, in Guadalupe 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 78123 at a glance
| ZIP code | 78123 |
|---|---|
| Primary city | Mcqueeney |
| State | Texas (TX) |
| County | Guadalupe FIPS 48187 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,127 |
| Coordinates | 29.600560, -98.042360 |
How ZIP+4 works in 78123
The four digits after the hyphen encode a delivery segment inside 78123. 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 78123 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 78123.
| ZIP | City | Distance |
|---|---|---|
| 78130 | New Braunfels, TX | 6.5 mi |
| 78124 | Marion, TX | 7.2 mi |
| 78155 | Seguin, TX | 7.8 mi |
| 78108 | Cibolo, TX | 10.9 mi |
| 78154 | Schertz, TX | 13.9 mi |
| 78132 | New Braunfels, TX | 14.3 mi |
| 78150 | Jbsa Randolph, TX | 15 mi |
| 78152 | Saint Hedwig, TX | 15.1 mi |
| 78638 | Kingsbury, TX | 15.3 mi |
| 78148 | Universal City, TX | 15.7 mi |
| 78670 | Staples, TX | 16.2 mi |
| 78109 | Converse, TX | 17.2 mi |
Questions about 78123
What is the ZIP+4 code for 78123?
78123 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 78123, you need to look up a specific street address to get them.
What city is 78123?
78123 is assigned to Mcqueeney, Texas, in Guadalupe 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.