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 Delaware, municipal law encompasses the legal framework governing cities, towns, and counties within the state. Each municipality has the authority to enact ordinances and regulations pertaining to a variety of local concerns, as long as they do not conflict with state or federal laws. Key areas of municipal law include zoning and land use, which dictate how property within the municipality can be used and developed. Municipalities also have the power to levy property and sales taxes to fund local services. Local governments are responsible for providing essential services such as trash collection, water and sewer services, and enforcing regulations related to noise, odor, and environmental concerns. Police powers are exercised by local law enforcement to maintain public safety. Municipalities also oversee the inspection of buildings to ensure compliance with safety and building codes, and they have the authority to condemn buildings that are deemed unsafe. The specific ordinances and regulations can vary significantly from one municipality to another within Delaware.