Lains (French pronunciation: [lɛ̃]) is a former commune in the Jura department in Bourgogne-Franche-Comté in eastern France. On 1 January 2017, it was merged into the new commune Montlainsia.

Historical population

Year Pop. ±% 1793 316 —     1806 311 −1.6% 1821 282 −9.3% 1831 408 +44.7% 1841 404 −1.0% 1851 396 −2.0% 1861 412 +4.0% 1872 366 −11.2% 1881 308 −15.8% 1891 303 −1.6% 1901 318 +5.0% 1911 262 −17.6%

Year Pop. ±% 1921 233 −11.1% 1931 211 −9.4% 1946 187 −11.4% 1954 156 −16.6% 1962 142 −9.0% 1968 122 −14.1% 1975 99 −18.9% 1982 83 −16.2% 1990 63 −24.1% 1999 77 +22.2% 2006 79 +2.6% 2012 83 +5.1%

• Communes of the Jura department