County · GEOID 48187
Guadalupe County, TX ZIP codes
14 ZIP/ZCTAs intersecting this county.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: County Guadalupe County (GEOID 48187). Methodology
Combined population of ZIP/ZCTAs intersecting this county: 408,070 (14 ZIPs).
Combined population of ZIP/ZCTAs intersecting this county. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census county ACS headline above. Methodology
Guadalupe County, TX ZIP code map

ZIP/ZCTA overlap with Guadalupe County
Population overlap
Share of each ZIP/ZCTA’s population located within Guadalupe County, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- 7810896.5%
Directory county
- 781218.6%
- 78123100.0%
Directory county
- 7812493.5%
Directory county
- 7813034.4%
- 781320.5%
- 781403.6%
- 7815467.1%
Directory county
- 78155100.0%
Directory county
- 7863899.5%
Directory county
- 786485.9%
- 7865526.4%
- 786667.0%
- 78670100.0%
Directory county
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting Guadalupe County
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 78108 | Cibolo | Guadalupe County | 48,458 | $117,304 |
| 78121 | La Vernia | Wilson County | 15,001 | $126,726 |
| 78123 | Mc Queeney | Guadalupe County | 2,271 | $95,700 |
| 78124 | Marion | Guadalupe County | 6,907 | $82,534 |
| 78130 | New Braunfels | Comal County | 95,787 | $84,426 |
| 78132 | New Braunfels | Comal County | 40,383 | $126,934 |
| 78140 | Nixon | Gonzales County | 3,190 | $49,032 |
| 78154 | Schertz | Guadalupe County | 40,898 | $97,465 |
| 78155 | Seguin | Guadalupe County | 53,449 | $71,367 |
| 78638 | Kingsbury | Guadalupe County | 2,064 | $82,760 |
| 78648 | Luling | Caldwell County | 8,022 | $56,533 |
| 78655 | Martindale | Caldwell County | 3,687 | $48,409 |
| 78666 | San Marcos | Hays County | 87,775 | $55,478 |
| 78670 | Staples | Guadalupe County | 178 | $76,591 |
USPS associates these ZIPs with Guadalupe County
These codes list Guadalupe County as a primary or acceptable city. They are not used for the ACS headline.
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 78115 | Geronimo | Guadalupe County | 417 | — |
| 78156 | Seguin | Guadalupe County | 1,518 | — |