Urban unit

In France, an urban unit ("fr: "unité urbaine"") is a statistical area defined by INSEE, the French national statistics office, for the measurement of contiguously built-up areas. According to the INSEE definition , an "unité urbaine" is a commune alone or a grouping of communes which: a) form a single unbroken spread of urban development, with no distance between habitations greater than 200 m and b) have all together a population greater than 2,000 inhabitants. Communes not belonging to an "unité urbaine" are considered rural.
The French "unité urbaine" is a statistical area in accordance with United Nations recommendations for the measurement of contiguously built-up areas. Other comparable units in other countries are the United States "Urbanized Area" and the "urban area" definition shared by the United Kingdom and Canada.