Lons-le-Saunier

• Name — Lons-le-Saunier • Native Name — Lon-Tsânier • Commune Status — Prefecture and commune • Arrondissement — Lons-le-Saunier • Canton — Lons-le-Saunier-1 and 2 • Insee — 39300 • Postal Code — 39000 • Image Flag — Flag of Lons-le-Saunier.gif • Image Coat Of Arms — Blason Lons-le-Saunier.svg • Mayor — Jean-Yves Ravier • Term — 2020–2026 • Intercommunality — Espace Communautaire Lons Agglomération • Elevation M — 255 • Elevation Min M — 243 • Elevation Max M — 415 • Area Km2 — 7.68 • Population — population_total • Population Date — population_as_of • Population Footnotes — population_footnotes Lons-le-Saunier (Arpitan: Lon-Tsânier) is a commune and capital of the Jura Department, eastern France.

The town is in the heart of the Revermont region, at the foot of the first plateau of the Jura massif. The Jura escarpment extends to the east and south, while to the west lies the plain of Bresse and to the north extensive vineyards. The river Vallière runs through the town, rising in a typical Jura blind valley not far away, at Revigny. It has been conduited since the 1960s on grounds of hygiene, since sewage outlets run into it. A small section remains in the open air near the parc des Bains, and only a single bridge (the pont de la Guiche) remains. The town is approximately equally placed between Besançon, Dijon, Bourg-en-Bresse and Geneva, though the last of these lies on the other side of the Jura massif. It is served by the A39 autoroute, by which Dijon can be reached in about an hour and Lyon in an hour and a half. The town's railway station lies on the line from Strasbourg to Lyon. The wine-growing region to the north of the town is particularly well known, and includes the vintages of l'Etoile, Château-Chalon and Arbois. The Jura escarpment to the south and east is a popular tourist region, with its attractions including the lakes of Chalain, Clairvaux and Vouglans (at Lect, Jura), and mountain resorts such as Prénovel and Les Rousses. In terms of area, Lons-le-Saunier is the second smallest prefectural town in France, after Bobigny.

The brine springs of Lons-le-Saunier have been exploited since the Neolithic. In the 19th century thermal baths were established, of which the monumental Thermes Lédonia have been preserved. In the 19th century there were copper and iron foundries, and a trade in horses, cattle, grain, cheese, etc.

• Claude Joseph Rouget de Lisle (1760–1836), composer of La Marseillaise, the French national anthem • Jean Baptiste Gaspard Roux de Rochelle (1762–1849), ambassador to the U.S. • Étienne Bobillier (1798–1840), mathematician • Maurice Joly (1829–78), satirist and lawyer • René Rémond (born 1918), historian and political economist • Jeanne Champion (born 1931), French painter and writer • Guy Canivet (born 1943), judge • Jean-Claude Romand (born 1954), medical imposter • Jean-François Stévenin (1944–2021), actor and filmmaker • Bernard Clavel (1923–2010), novelist • Félix Lambey (born 1994), rugby player

• General Claude Lecourbe (1759–1815) studied in Lons; a statue of him stands in the central Place de la Liberté

Lons-le-Saunier is twinned with: • Germany Offenburg, Germany • Ripley, United Kingdom