^1 French Land Register data, which exclude estuaries, and lakes, ponds, and glaciers larger than 1 km2
Val-d'Oise (French pronunciation: [val dwaz]) is a Frenchdepartment, created in 1968 after the split of the Seine-et-Oise department and located in the Île-de-Franceregion. In local slang, it is known as "quatre-vingt quinze" (i.e. "ninety-five") or "neuf cinq" (i.e. "nine five"). It gets its name from the Oise River, a major tributary of the Seine, which crosses the region after having started in Belgium and flowed through north-eastern France. Paris-Charles de Gaulle Airport, France's main international airport is partially located in Roissy-en-France, a commune of Val d'Oise.
¹This group is made up largely of former French settlers, such as pieds-noirs in Northwest Africa, followed by former colonial citizens who had French citizenship at birth (such as was often the case for the native elite in French colonies), and to a lesser extent foreign-born children of French expatriates. Note that a foreign country is understood as a country not part of France in 1999, so a person born for example in 1950 in Algeria, when Algeria was an integral part of France, is nonetheless listed as a person born in a foreign country in French statistics.
²An immigrant is a person born in a foreign country not having French citizenship at birth. Note that an immigrant may have acquired French citizenship since moving to France, but is still considered an immigrant in French statistics. On the other hand, persons born in France with foreign citizenship (the children of immigrants) are not listed as immigrants.