Map visualisation service (WMS) of the dataset: Urban unit according to INSEE in the Somme

INSEE zoning comprising a municipality or a set of municipalities which has a built-up area of at least 2,000 inhabitants on its territory where no dwelling is separated from the nearest of more than 200 metres. In addition, each municipality concerned has more than half of its population in this built-up area. The concept of urban unity is based on the continuity of the building and the number of inhabitants. It is called an urban unit a commune or a set of municipalities with a continuous built-up area (no cut of more than 200 meters between two buildings) that has at least 2,000 inhabitants. If the urban unit is located in a single municipality, it is called 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 called a multi-communal agglomeration. * INSEE zoning comprising a municipality or a set of municipalities which has a built-up area of at least 2,000 inhabitants in its territory where no dwelling is separated from the nearest of more than 200 metres. In addition, each municipality concerned has more than half of its population in this built-up area. If the urban unit extends over several municipalities, all these municipalities form a multi-municipal agglomeration or urban agglomeration. If the urban unit extends over a single municipality, it is called an isolated city. * Zoning is based on 1999 census data. The list of municipalities is that of the Official Geographical Code (COG) on 01/01/2008.