Heyrieux (French pronunciation: [ɛʁjø]) is a commune in the Isère department in southeastern France.

Historical population

Year Pop. ±% p.a. 1793 1,232 —     1800 1,338 +1.19% 1806 1,427 +1.08% 1821 1,539 +0.50% 1831 1,424 −0.77% 1836 1,490 +0.91% 1841 1,520 +0.40% 1846 1,560 +0.52% 1851 1,416 −1.92% 1856 1,362 −0.77% 1861 1,369 +0.10% 1866 1,355 −0.21% 1872 1,465 +1.31% 1876 1,535 +1.17% 1881 1,541 +0.08% 1886 1,517 −0.31% 1891 1,508 −0.12% 1896 1,510 +0.03%	Year Pop. ±% p.a. 1901 1,505 −0.07% 1906 1,508 +0.04% 1911 1,446 −0.84% 1921 1,101 −2.69% 1926 1,116 +0.27% 1931 1,205 +1.55% 1936 1,223 +0.30% 1946 1,273 +0.40% 1954 1,346 +0.70% 1962 1,475 +1.15% 1968 1,733 +2.72% 1975 2,473 +5.21% 1982 3,270 +4.07% 1990 3,872 +2.13% 1999 4,163 +0.81% 2007 4,646 +1.38% 2012 4,674 +0.12% 2017 4,731 +0.24%
Source: EHESS and INSEE (1968-2017)

Heyrieux is twinned with:

• Busnago, Italy, since 1999

• Communes of the Isère department