Seguin, TX ZIP codes
Seguin, Texas has 2 ZIP codes, including 1 PO Box ZIP. They are in Guadalupe County.
- Population in these ZIPs
- 55,600
- Avg. median income
- $71,000population-weighted
- Typical home value
- $267,100population-weighted
- Metro area
- San Antonio-New Braunfels, TX
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Seguin, TX ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 78155 | Guadalupe County | 55,600 | $71,039 | $267,100 |
| 78156 PO Box | Guadalupe County | — | — | — |
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 near Seguin
- Mc Queeney 6 mi
- Marion 12 mi
- Kingsbury 12 mi
- New Braunfels 14 mi
- Staples 15 mi
- Prairie Lea 16 mi
- Cibolo 16 mi
- Leesville 17 mi
- La Vernia 17 mi
- Fentress 18 mi
- Saint Hedwig 18 mi
- Martindale 18 mi
Frequently asked questions
What county is Seguin, Texas in?
Seguin ZIP codes are in Guadalupe County.
Which Seguin ZIP codes are PO Boxes?
78156 is a PO Box or single-organization ZIP code; it has no residential delivery area.