Guadalupe County, Texas ZIP codes
9 ZIP codes are in Guadalupe County, plus 7 that cross in from neighboring counties. It's part of the San Antonio-New Braunfels, TX metro area.
- ZIP codes
- 9
- Population in these ZIPs
- 219,942
- Avg. median income
- $86,600population-weighted
- Cities & towns
- 8
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Guadalupe County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 78108 | Cibolo | 49,784 | $113,004 | $324,000 |
| 78115 PO Box | Geronimo | — | — | — |
| 78123 | Mc Queeney | 2,127 | $97,553 | $432,000 |
| 78124 | Marion | 6,157 | $74,192 | $338,800 |
| 78130 | New Braunfels | 104,009 | $83,064 | $302,000 |
| 78155 | Seguin | 55,600 | $71,039 | $267,100 |
| 78156 PO Box | Seguin | — | — | — |
| 78638 | Kingsbury | 2,135 | $69,250 | $368,000 |
| 78670 | Staples | 130 | $78,625 | $244,100 |
ZIP codes partly in Guadalupe County
These ZIP codes are mostly in a neighboring county but cover part of Guadalupe County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 78121 | La Vernia | Wilson County | 16,120 | $120,048 | $497,500 |
| 78132 | New Braunfels | Comal County | 40,953 | $135,315 | $558,900 |
| 78140 | Nixon | Gonzales County | 3,474 | $50,250 | $199,800 |
| 78154 | Schertz | Bexar County | 41,907 | $100,572 | $302,300 |
| 78648 | Luling | Caldwell County | 7,863 | $57,621 | $225,500 |
| 78655 | Martindale | Caldwell County | 3,730 | $55,952 | $329,500 |
| 78666 | San Marcos | Hays County | 88,583 | $54,737 | $309,400 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Guadalupe County
Nearby counties
Frequently asked questions
How many ZIP codes are in Guadalupe County, Texas?
9 ZIP codes are mainly in Guadalupe County, and 7 more ZIP codes from neighboring areas reach partly into it.
What cities are in Guadalupe County?
ZIP codes in Guadalupe County use the city names Cibolo, Geronimo, Kingsbury, Marion, Mc Queeney, New Braunfels, Seguin and Staples.
What metro area is Guadalupe County in?
Guadalupe County is part of the San Antonio-New Braunfels, TX metropolitan statistical area.