Saint-Didier-de-Formans (French pronunciation: [sɛ̃ didje də fɔʁmɑ̃] , literally Saint-Didier of Formans) is a commune in the Ain department in eastern France.

Historical population

Year Pop. ±% p.a. 1793 410 —     1800 350 −2.23% 1806 394 +1.99% 1821 507 +1.70% 1831 560 +1.00% 1836 642 +2.77% 1841 658 +0.49% 1846 650 −0.24% 1851 686 +1.08% 1856 700 +0.40% 1861 616 −2.52% 1866 661 +1.42% 1872 632 −0.74% 1876 632 +0.00% 1881 585 −1.53% 1886 546 −1.37% 1891 533 −0.48% 1896 507 −1.00%	Year Pop. ±% p.a. 1901 515 +0.31% 1906 570 +2.05% 1911 520 −1.82% 1921 519 −0.02% 1926 577 +2.14% 1931 576 −0.03% 1936 548 −0.99% 1946 476 −1.40% 1954 599 +2.91% 1962 627 +0.57% 1968 648 +0.55% 1975 665 +0.37% 1982 992 +5.88% 1990 1,288 +3.32% 1999 1,544 +2.03% 2007 1,777 +1.77% 2012 1,782 +0.06% 2017 1,960 +1.92%
Source: EHESS and INSEE (1968-2017)

The historian Marc Bloch (1886-1944) was executed by the Gestapo here.

• Communes of the Ain department