Rules for ZIP Code 20851

ZIP code 20851 is governed by the city of Rockville, MD, home to about 79% of the ZIP's residents. The ordinances shown below come from Rockville'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. Each page quotes the official code section and links to its source.