The new department had six districts: Châtellerault, Civray, Loudun, Lusignan, Montmorillon and Poitiers. The capital (now prefecture) was Poitiers.[4]
In 1800, with the creation of the arrondissements in France, the six districts were changed into five arrondissements: Châtellerault, Civray, Loudun, Montmorillon and Poitiers.[4]
On 10 September 1926, the arrondissements of Civray and Loudun were eliminated.[4]
The main river in the department is the Vienne that gives its name to the department; it is one of the main tributary of the Loire river. The Vienne river flows through the department from north to south.
Climate
The climate of Poitiers is an oceanic climate with template summers, Cfb (Marine West Coast Climate) in the Köppen climate classification.[5]
The average amount of precipitation for the year in Poitiers is 685.8 mm (27.0 in). The month with the most precipitation on average is October with 76.2 mm (3.0 in) of precipitation. The month with the least precipitation on average is August with an average of 40.6 mm (1.6 in).
The average temperature for the year in Poitiers is 11.7 °C (53.1 °F). The warmest month, on average, is July with an average temperature of 19.6 °C (67.3 °F). The coolest month on average is January, with an average temperature of 4.7 °C (40.5 °F).
Administration
The department is managed by the Departamental Council of the Vienne in Poitiers. Vienne is part of the region of Nouvelle-Aquitaine.
The following is a list of the 19 cantons of the Vienne department, following the French canton reorganisation which came into effect in March 2015:[9]
The inhabitants of Vienne are known, in French, as Viennois (women: Viennoises).[10]
Vienne has a population, in 2014, of 433,203,[3] for a population density of 62.0 inhabitants/km2. The arrondissement of Poitiers, with 246,038 inhabitants, is by far the largest. The other two, Châtellerault and Montmorillon, have respectively 112,313 and 74,852 inhabitants.[7]
↑"Département de la Vienne (86)". Géographie administrative et d'étude (in French). Institut national de la statistique et des études économiques - INSEE. Retrieved 4 April 2017.
↑"Département de la Vienne (86)". Comparateur de territoire (in French). Institut national de la statistique et des études économiques - INSEE. Retrieved 4 April 2017.