Crossac (French pronunciation: [kʁɔsak] ; Gallo: Croczac or Croça, Breton: Kroazieg) is a commune in the Loire-Atlantique department in western France.

Historical population

Year Pop. ±% p.a. 1793 1,263 —     1821 1,379 +0.31% 1846 1,582 +0.55% 1872 1,591 +0.02% 1901 1,710 +0.25% 1926 1,492 −0.54% 1946 1,501 +0.03% 1962 1,517 +0.07%	Year Pop. ±% p.a. 1968 1,558 +0.45% 1975 1,658 +0.89% 1982 2,067 +3.20% 1990 2,277 +1.22% 1999 2,136 −0.71% 2007 2,579 +2.38% 2012 2,808 +1.72% 2017 2,952 +1.01%
Source: EHESS and INSEE (1968-2017)

• Communes of the Loire-Atlantique department
• Parc naturel régional de Brière