Municipal law generally includes the laws and ordinances specific to a city, town, or county—also known as a municipality. Municipal law often addresses legal issues for which the city or town government is responsible for enforcing—such as zoning restrictions, land use and development, property taxes, sales taxes, trash pickup and disposal, water and sewer service, noise pollution, odor pollution, fire and burning restrictions, police powers, inspection of residential and commercial buildings, and condemnation of buildings.

In Idaho, municipal law encompasses the regulations and ordinances that are specific to cities, towns, or counties within the state. These laws are designed to address a variety of local concerns and are enforced by the respective municipal governments. Key areas of municipal law in Idaho include zoning laws, which dictate how land can be used and developed; property and sales tax regulations; and the provision of essential services such as trash collection, water, and sewer services. Municipalities also have the authority to regulate noise and odor pollution, impose fire and burning restrictions, exercise police powers, and conduct inspections of residential and commercial properties. Additionally, Idaho cities and towns may have the power to condemn buildings that are deemed unsafe or unfit for use. These local laws are often detailed in city or county codes and are enacted by city councils or county commissions. They must comply with both state statutes and federal law.