Le Château-d'Oléron (French pronunciation: [lə ʃɑto dɔleʁɔ̃]; Occitan: Lo Chasteu d'Olairon, before 1962: Le Château) is a commune located on the Island of Oléron, in the Charente-Maritime department, southwestern France.

The town is surrounded by fortifications in the form of a Bastion fort (similar to a "star fort".)

Historical population

Year Pop. ±% p.a. 1793 2,251 —     1800 2,558 +1.84% 1806 2,735 +1.12% 1821 2,632 −0.26% 1831 2,527 −0.41% 1836 2,644 +0.91% 1841 2,485 −1.23% 1846 2,542 +0.45% 1851 2,632 +0.70% 1856 3,003 +2.67% 1861 2,920 −0.56% 1866 3,211 +1.92% 1872 3,328 +0.60% 1876 2,850 −3.80% 1881 3,132 +1.90% 1886 3,007 −0.81% 1891 3,458 +2.83% 1896 3,573 +0.66%	Year Pop. ±% p.a. 1901 3,803 +1.26% 1906 3,334 −2.60% 1911 3,734 +2.29% 1921 3,142 −1.71% 1926 3,018 −0.80% 1931 3,061 +0.28% 1936 3,281 +1.40% 1946 2,864 −1.35% 1954 2,870 +0.03% 1962 3,171 +1.25% 1968 3,254 +0.43% 1975 3,324 +0.30% 1982 3,411 +0.37% 1990 3,544 +0.48% 1999 3,552 +0.03% 2007 3,949 +1.33% 2012 3,949 +0.00% 2017 4,184 +1.16%
Source: EHESS and INSEE (1968-2017)

• 
  Le Château-d'Oléron, 1703 military mock-up
• 
  The main gate of the citadel
• 
  Old oyster farmers' huts renewed and converted into arts and crafts shops

• Communes of the Charente-Maritime department

• Media related to Le Château-d'Oléron at Wikimedia Commons