Rules for ZIP Code 78634
Hutto, TX · Williamson County
ZIP 78634 is governed by the city of Hutto, TX. We do not hold its code yet, and Williamson County ordinances do not apply inside its limits.
ZIP code 78634 lies in the city of Hutto, TX, which holds about 66% of the ZIP's residents and writes its own local code. We have not added Hutto's ordinances yet, so nothing is shown below: Williamson County rules govern only unincorporated land and do not reach inside Hutto.
ZIP codes do not follow city lines. 78634 also covers:
- unincorporated Williamson County~34% of residents
Shares are estimates from 2020 Census geography. If your address is in one of these, its rules apply instead.
Each topic below links to the full ordinance breakdown with specific code sections, fine amounts, and answers to common questions. The data is sourced from the official municipal code and verified by our editorial team.
Hutto is not covered yet
The city of Hutto writes its own code; the county's rules do not apply inside it.Request Hutto coverage →
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