Rules for ZIP Code 45342
Miamisburg, OH · Montgomery County
ZIP 45342 is governed by the city of Miamisburg, OH. We do not hold its code yet, and Montgomery County ordinances do not apply inside its limits.
ZIP code 45342 lies in the city of Miamisburg, OH, which holds about 57% of the ZIP's residents and writes its own local code. We have not added Miamisburg's ordinances yet, so nothing is shown below: Montgomery County rules govern only unincorporated land and do not reach inside Miamisburg.
ZIP codes do not follow city lines. 45342 also covers:
- unincorporated Montgomery County~25% 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.
Miamisburg is not covered yet
The city of Miamisburg writes its own code; the county's rules do not apply inside it.Request Miamisburg coverage →
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