Guilherand-Granges (French pronunciation: [ɡijʁɑ̃ ɡʁɑ̃ʒ]; Vivaro-Alpine: Guilharand e las Granjas, before 1991: Guilherand) is a commune in the Ardèche department in southern France. It is a suburb of Valence, Drôme. It is one of the most populous commune in the Ardéche department, after Annonay and Aubenas, and before Tournon-sur-Rhône.

Historical population

Year Pop. ±% p.a. 1793 67 —     1800 300 +23.88% 1806 297 −0.17% 1821 376 +1.58% 1831 470 +2.26% 1836 480 +0.42% 1841 579 +3.82% 1846 605 +0.88% 1851 608 +0.10% 1856 606 −0.07% 1861 592 −0.47% 1866 572 −0.68% 1872 541 −0.92% 1876 554 +0.60% 1881 568 +0.50% 1886 571 +0.11% 1891 592 +0.72% 1896 644 +1.70%	Year Pop. ±% p.a. 1901 600 −1.41% 1906 658 +1.86% 1911 737 +2.29% 1921 910 +2.13% 1926 1,057 +3.04% 1931 1,230 +3.08% 1936 1,447 +3.30% 1946 1,743 +1.88% 1954 1,966 +1.52% 1962 4,433 +10.70% 1968 7,226 +8.48% 1975 8,966 +3.13% 1982 9,556 +0.91% 1990 10,492 +1.17% 1999 10,707 +0.23% 2009 10,893 +0.17% 2014 10,841 −0.10% 2020 10,965 +0.19%
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Source: EHESS and INSEE (1968-2020)

• Communes of the Ardèche department