Annexation - Subnational Annexation

Subnational Annexation

See also: Municipal annexation in the United States

Within countries that are subdivided noncontiguously, annexation can also take place whereby a lower-tier subdivision can annex territory under the jurisdiction of a higher-tier subdivision. An example of this is in the United States, where incorporated cities and towns often expand their boundaries by annexing unincorporated land adjacent to them. Municipalities can also annex or be annexed by other municipalities, though this is less common in the United States. Laws governing the ability and the extent cities can expand in this fashion are defined by the individual states' constitutions.

Annexation of neighbouring communities occurs in Canada, where the Unicity concept of city planning is popular. The city of Calgary, for example, has in the past annexed the communities of Bridgeland, Riverside, Sunnyside, Hillhurst, Hunter, Hubalta, Ogden, Forest Lawn, Midnapore, Shepard, Montgomery, and Bowness.