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Département de la Sésia
Department of the First French Republic and of the First French Empire


Flag of Sésia


Location of Sésia
Administrative map of the Italian portion of the French Empire.
Capital Vercelli
45°19′N 8°25′E / 45.317°N 8.417°E / 45.317; 8.417Coordinates: 45°19′N 8°25′E / 45.317°N 8.417°E / 45.317; 8.417
 •  Decree of 24 Fructidor, year X[1] 11 September 1802
 •  Treaty of Fontainebleau 11 April 1814
 •  1812[2] 3,351.18 km2 (1,294 sq mi)
 •  1812[2] 202,733 
Density 60.5 /km2  (156.7 /sq mi)
Political subdivisions 5 Arrondissements[2]

Sésia was a department of the French Consulate and of the First French Empire in present-day Italy. It was named after the Sesia river. It was formed in 1802, when the Subalpine Republic (formerly the mainland portion of the Kingdom of Sardinia) was directly annexed to France. Its capital was Vercelli.

The department was disbanded after the defeat of Napoleon in 1814. At the Congress of Vienna, the Savoyard King of Sardinia was restored in all his previous realms and domains, including Piedmont. Its territory is now divided between the Italian provinces of Vercelli and Biella.


The department was subdivided into the following arrondissements and cantons (situation in 1812):[2]

Its population in 1812 was 202,733, and its area was 335,118 hectares.[2]


  1. ^ "Décret du 24 Fructidor". Retrieved 28 September 2010. 
  2. ^ a b c d Almanach Impérial an bissextil MDCCCXII, p. 468, accessed in Gallica 26 July 2013 (French)