Seguin, TX ZIP Codes
2 ZIP codes · 50 homes for sale right now. Pick a ZIP for its listings, market snapshot and neighborhoods.
Seguin, TX is covered by 2 ZIP codes in HomeLocating's coverage: 78155 and 78166. A ZIP code is a quick way to narrow a home search to one part of town, so each ZIP below has its own page with the homes currently for sale, a market snapshot, the communities and neighborhoods inside it, and nearby ZIP codes.
Right now there are 50 active homes for sale across these ZIPs, the most in 78155 (49).
ZIP codes are postal delivery areas rather than city limits. Some ZIPs listed under Seguin also reach into neighboring towns or unincorporated areas, and a home with a Seguin mailing address can sit in a ZIP shown under a neighboring city. Use a ZIP page for the part of town you care about, and the Seguin homes-for-sale page for the whole city.
Coverage on this page comes from the ZIP codes of the homes in our MLS feed for Seguin and, where published, Unlock MLS's Central Texas ZIP scorecard. A ZIP with no homes for sale today keeps its own page, so you can bookmark it, read about the area and get alerted when something lists.
Seguin ZIP codes at a glance
| ZIP | Area | Homes for sale | Median closed-sale price |
|---|---|---|---|
| 78155 homes for sale | Includes Navarro Crossing, Navarro Ranch, and Swenson Heights | 49 active | — |
| 78166 | Includes Navarro Crossing | 1 active | — |
Median closed-sale price: Unlock MLS Central Texas ZIP Code Scorecard, July 2026, where published for the ZIP.
How to search Seguin by ZIP code
- Pick a ZIP from the table to see its live listings, price range and median list price.
- Counts refresh with our MLS feed, so a ZIP with no homes today can have new listings tomorrow — every ZIP page stays live either way.
- Compare neighboring ZIPs from any ZIP page, or open the Seguin housing market page for city-wide trends.
- Prefer to talk it through? Reach out and we'll help you choose between Seguin ZIP codes based on your budget and commute.