Rules for ZIP Code 94545

ZIP code 94545 is governed by the city of Hayward, CA, home to about 100% of the ZIP's residents. The ordinances shown below come from Hayward's own code and apply to residential and commercial properties within its limits, from noise restrictions and parking to building permits and animal regulations.

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.