Simple download service (Atom) of the dataset: Urban units 2020 for Corrèze and neighbouring departments

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Dataset information

Country of origin
Updated
2022.01.14 00:00
Created
Available languages
French
Keywords
Quality scoring

Dataset description

N_URBAINE_UNITE_2020_ZSUP_FLA_000 Urban units 2020 for Corrèze and neighbouring departments The objects on the outer periphery of the neighbouring departments are not complete if it overflows over the next department. Based on IGN INSEE and GeoFLA files https://www.insee.fr/fr/information/4802589 The concept of urban unity is based on the continuity of the building and the number of inhabitants. Urban units are built in metropolitan France and in the overseas departments according to the following definition: a municipality or group of municipalities with a continuous building area (no cut-off of more than 200 metres between two buildings) with at least 2,000 inhabitants. If the urban unit is located in a single municipality, it is referred to as an isolated city. If the urban unit extends over several municipalities, and each of these municipalities concentrates more than half of its population in the continuous built-up area, it is referred to as a multi-communal agglomeration. If one of these municipalities concentrates less than half of its population in the continuous built-up area but concentrates 2,000 or more inhabitants there, then it will constitute an isolated urban unit. The agglomeration of Paris is the multi-communal agglomeration containing Paris. Finally, “community outside urban unit” means municipalities not assigned to an urban unit. These thresholds, 200 metres for the continuity of the building and 2,000 inhabitants for the population of built-up areas, are the result of recommendations adopted at international level. For example, in the European population census regulation, population statistics based on zoning into urban units are expected. The calculation of the space between two buildings is done by analysing the building databases of the National Institute for Geographical and Forestry Information (IGN). It takes account of cuts in the urban fabric such as rivers in the absence of bridges, graveries, height differences. Since the 2010 division, certain public spaces (cmeteries, stadiums, aerodromes, parking lots, etc.), industrial or commercial land (factory, activity areas, shopping centres, etc.) have been treated as buildings with the 200-metre rule to connect inhabited construction areas, unlike previous divisions where these spaces were only cancelled in the calculation of distances between buildings. Urban units are redefined periodically. The current zoning, dated 2020, is established with reference to the population known in the 2017 census and the administrative geography of the territory as of 1 January 2020. The previous fiscal year, dated 2010, was based on the 2007 census and the administrative geography of the territory as of 1 January 2010. A first demarcation of cities and agglomerations was carried out on the occasion of the 1954 census. New urban units were then formed in the 1962, 1968, 1975, 1982, 1990 and 1999 censuses. Urban units can span several departments or even cross national borders (see International Urban Unit). The division into urban units concerns all the municipalities of metropolitan France and the overseas departments.
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