Chaumont-sur-Loire (French pronunciation: [ʃomɔ̃ syʁ lwaʁ], lit. 'Chaumont on Loire'), commonly known as Chaumont, is a commune and town in the Loir-et-Cher department and the administrative region of Centre-Val de Loire, France, known for its historical defensive walls and its castle.

The castle was founded by Odo 1 (973-996), Count of Blois. At each epoch of French history the Château has been owned, rented or visited by significant persons in French and European history. In the period between the late enlightenment and the romantic period, Germaine de Staël was resident from April to August 1810. Many famous guests visited the lively and politically active Madame de Staël including Madame Récamier, Adelbert von Chamisso, the counts of Sabran and Salaberry as well as the author of "Adolphe", Benjamin Constant.

• 
• 

Historical population

Year Pop. ±% p.a. 1793 750 —     1800 832 +1.49% 1806 848 +0.32% 1821 930 +0.62% 1831 985 +0.58% 1836 935 −1.04% 1841 925 −0.21% 1846 957 +0.68% 1851 942 −0.32% 1856 953 +0.23% 1861 1,000 +0.97% 1866 1,000 +0.00% 1872 988 −0.20% 1876 945 −1.11% 1881 1,065 +2.42% 1886 1,103 +0.70% 1891 1,136 +0.59% 1896 1,092 −0.79%	Year Pop. ±% p.a. 1901 1,037 −1.03% 1906 1,064 +0.52% 1911 1,047 −0.32% 1921 937 −1.10% 1926 882 −1.20% 1931 779 −2.45% 1936 704 −2.00% 1946 796 +1.24% 1954 706 −1.49% 1962 705 −0.02% 1968 742 +0.86% 1975 783 +0.77% 1982 842 +1.04% 1990 876 +0.50% 1999 1,031 +1.83% 2009 1,037 +0.06% 2014 1,092 +1.04% 2020 1,082 −0.15%
Source: EHESS (1793-1999) and INSEE

• Château de Chaumont
• Communes of the Loir-et-Cher department