City limit

The terms city limit and city boundary refer to the defined boundary or border of a city. The area within the city limit is sometimes called the city proper. The terms town limit/boundary and village limit/boundary mean the same as city limit/boundary, but apply to towns and villages. Similarly, the term corporate limit is a legal name that refers to the boundaries of municipal corporations. In some countries, the limit of a municipality may be expanded through annexation.

In the United States, such limits are usually formally described in a state, provincial, or territorial law (or an appropriate regulation) as being under the control of the municipal corporation or agency that constitutes the city government. It is customary to indicate city limits with the posting of signs on major freeways, highways, and arterial roads. Note that New England states have a unique concept of "towns", which are similar in size to the civil townships in other States, but empowered with the authority exercised by municipalities in other States.

Property within a city's limit is subject to city taxation and city regulation, and expects city services. Areas outside any city's limit are considered to be unincorporated, and in most U.S. states they are by default regulated and taxed by the county. In others, areas outside of a city's limit fall within another type of local government, such as the civil township (a division of a county). Cities and towns may have extraterritorial jurisdiction beyond their limits, typically for zoning purposes. The distance this extends varies based on the population or area of the city, or which "class" it is considered to be under state law.

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