|Coordinates: 47°48′N3°34′E / 47.800°N 3.567°E Coordinates: 47°48′N3°34′E / 47.800°N 3.567°E|
|Subprefectures|| Avallon |
|• President of the Departmental Council||Patrick Gendraud  (LR)|
|• Total||7,427 km2 (2,868 sq mi)|
(Jan. 2019) 
|• Density||45/km2 (120/sq mi)|
|Time zone||UTC+1 (CET)|
|• Summer (DST)||UTC+2 (CEST)|
|^1 French Land Register data, which exclude estuaries and lakes, ponds and glaciers larger than 1 km2|
Yonne (French: [jɔn] ) is a département in the Bourgogne-Franche-Comté region in France. It is named after the river Yonne, which flows through it, in the country's north-central part. One of Bourgogne-Franche-Comté's eight constituent departments, it is located in its northwestern part, bordering Île-de-France. It was created in 1790 during the French Revolution. Its prefecture is Auxerre, with subprefectures in Avallon and Sens. Its INSEE and postcode number is 89.
Yonne is Bourgogne-Franche-Comté's fourth-most populous department, with a population of 335,707 (2019).  Its largest city is its prefecture Auxerre, with a population of about 35,000 within city limits and 68,000 in the urban area.
The first evidence of occupation in this area is found in the Grottes d'Arcy-sur-Cure, where paintings have been found dating back 28,000 years. The Palaeolithic hunter-gatherers of that time also left behind numerous flint artefacts. The area is believed to have been occupied for about 200,000 years.  By 4000 BC, a wave of Neolithics arrived from the Danube River region of eastern Europe. They built substantial wooden houses and introduced pottery decorated with the characteristics of the Linear Pottery culture. Further waves of migrants followed, the Chasséen culture, and the Michelsberg culture. 
The Celtic tribe in the area were named "Icauna", after the River Yonne which they thought sacred. The region was later occupied by Gallic tribes. In that period, the area came under the control of the Roman Empire, whose chief town was Sens, which they called Agendicum. It was the capital of their province of Gallia Lugdunensis, one of four provinces into which France was subdivided.[ citation needed ] The present main roads from Lyon to Boulogne, and from Sens to Alise-Sainte-Reine date from this period. About this time, Auxerre, Tonnerre (Tornodurum) and Avallon were growing in size. In the fourth century, Sens became a walled city. The first bishops were appointed in Sens and Langres, and they influenced the region profoundly because of their power.[ citation needed ]
In 1771, the northwesterly part of the present department belonged to Prince Francis Xavier of Saxony, the uncle of Louis XVI of France. The current Yonne department was organized and defined during the French Revolution, on March 4, 1790, as a result of the passing of an Act on December 22, 1789.  It was carved out of parts of the provinces of Burgundy, Champagne and Orléans, and to a lesser extent from parts of the Nivernais and Île-de-France.
Yonne is a department in central France, one of the eight constituent departments of the region of Bourgogne-Franche-Comté. To the northeast lies the department of Aube, to the east lies Côte-d'Or, to the south lies Nièvre, to the west lies Loiret and to the northwest, the department of Seine-et-Marne. The River Yonne flows northwards through the department. Auxerre, the capital of the department, is situated on the River Yonne, and the River Serein joins this a few kilometres north of the city. The Canal de Bourgogne, which connects the Mediterranean Sea with the Atlantic Ocean, joins the River Yonne through locks at Migennes a little further north. The second biggest town is Sens, situated at the confluence of the rivers Vanne and Yonne. 
The geology of the department is complex with concentric rings of granite, Jurassic, Cretaceous and Tertiary rocks, and layers of sedimentary rocks. The terrain is mostly a low-lying plateau used for agriculture. The southwestern part is the Puisaye, which has a higher elevation and is more wooded. To the centre and east, the land inclines to the northwest where the higher land of the Tonnerrois region lies. To the east the rock is mostly limestone. The Auxerrois region is renowned for the grapes grown here, which are used in the production of Chablis wine. To the south lies the mountainous massif of Morvan, the highest parts of which are in the neighbouring department of Nièvre.  The department has some forested areas but is mainly used for pasture or cultivated for wheat. 
The most populous commune is Auxerre, the prefecture. As of 2019, there are 6 communes with more than 5,000 inhabitants: 
Population development since 1801:
|source:  |
Over fifty percent of the inhabitants of the department are engaged in agricultural activities. It is one of the poorest and most rural departments in France. During the hundred years leading up to 1962, its population declined by around 100,000, while all of the surrounding departments had population growth. Yonne had been bypassed by the development of the railways. As French industry flourished elsewhere in the late nineteenth century, the young people left Yonne seeking better opportunities, and the department stagnated.
The viticulture industry was severely affected by the advent of powdery mildew and the arrival of Phylloxera in the nineteenth century; at the same time, the development of the railway network allowed cheaper wines from other regions to undercut Chablis wine in the Paris market. The once-thriving industry never recovered.  By 1945, only 4000 hectares of grapevines remained, and only 471 hectares of grapes were grown for Chablis. 
More recently, the population trend has been reversed. During the period 1999 to 2007, it rose by 8000 to a total of 341,418. However, with a population of 46 inhabitants per square kilometre, the density in Yonne is still less than half that for the whole of France, which was 100.5 for the same year. 
The president of the Departmental Council is Patrick Gendraud, elected in 2017. In 2015, the General Council of the department was allotted a budget of 410 million euros. 
The department elects three members of parliament to the National Assembly. In the 2012–17 parliamentary term, two represented the right-wing Union for a Popular Movement (UMP) and one the Socialist Party (France) (PS).
|Yonne's 1st constituency||Daniel Grenon||National Rally|
|Yonne's 2nd constituency||André Villiers||Horizons|
|Yonne's 3rd constituency||Julien Odoul||National Rally|
Burgundy is a historical territory and former administrative region and province of east-central France. The province was once home to the Dukes of Burgundy from the early 11th until the late 15th century. The capital of Dijon was one of the great European centres of art and science, a place of tremendous wealth and power, and Western Monasticism. In early Modern Europe, Burgundy was a focal point of courtly culture that set the fashion for European royal houses and their court. The Duchy of Burgundy was a key in the transformation of the Middle Ages toward early modern Europe.
Côte-d'Or is a département in the Bourgogne-Franche-Comté region of Northeastern France. In 2019, it had a population of 534,124. Its prefecture is Dijon and subprefectures are Beaune and Montbard.
Jura is a department in the Bourgogne-Franche-Comté region in Eastern France. Named after the Jura Mountains, its prefecture is Lons-le-Saunier. Its subprefectures are Dole and Saint-Claude. In 2019, Jura had a population of 259,199. Its INSEE code is 39. It has a short portion of the border of Switzerland.
Nièvre is a department in the Bourgogne-Franche-Comté region, central-east France. Named after the river Nièvre, it had a population of 204,452 in 2019. Its prefecture is Nevers.
Saône-et-Loire is a department in the Bourgogne-Franche-Comté region in France. It is named after the rivers Saône and Loire, between which it lies, in the country's central-eastern part.
The Territoire de Belfort is a department in the Bourgogne-Franche-Comté region, eastern France. It had a population of 141,318 in 2019.
Auxerre is the capital of the Yonne department and the fourth-largest city in Burgundy. Auxerre's population today is about 35,000; the urban area comprises roughly 113,000 inhabitants. Residents of Auxerre are referred to as Auxerrois.
The Arrondissement of Sens is an arrondissement of France in the Yonne department in the Bourgogne-Franche-Comté region. It has 118 communes. Its population is 131,368 (2016), and its area is 1,916.8 km2 (740.1 sq mi).
Avallon is a commune in the Yonne department in Bourgogne-Franche-Comté in central-eastern France.
The 3 arrondissements of the Yonne department are:
The following is a list of the 21 cantons of the Yonne department, in France, following the French canton reorganisation which came into effect in March 2015:
Chablis is a town and commune in the Yonne department in Bourgogne-Franche-Comté in north-central France.
The arrondissement of Auxerre is an arrondissement of France in the Yonne department in the Bourgogne-Franche-Comté region. It has 170 communes. Its population is 165,987 (2016), and its area is 3,431.8 km2 (1,325.0 sq mi).
The arrondissement of Avallon is an arrondissement of France in the Yonne department in the Bourgogne-Franche-Comté region. It has 135 communes. Its population is 43,189 (2016), and its area is 2,078.8 km2 (802.6 sq mi).
Ouanne is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France, in the natural region of Forterre.
Migennes is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France. Laroche-Migennes station has rail connections to Dijon, Paris, Auxerre, Corbigny and Avallon.
Irancy is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France. It is located southwest of Chablis in Bourgogne-Franche-Comté.
Vassy-sous-Pisy is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France.
Bourgogne-Franche-Comté is a region in Eastern France created by the 2014 territorial reform of French regions, from a merger of Burgundy and Franche-Comté. The new region came into existence on 1 January 2016, after the regional elections of December 2015, electing 100 members to the Regional Council of Bourgogne-Franche-Comté.
The Departmental Council of Yonne is the deliberative assembly of the French department of Yonne in the region of Bourgogne-Franche-Comté. It includes 42 departemental councillors from the 21 cantons of Yonne, elected for a term of six years. It is chaired by Patrick Gendraud (LR).