Piriac-sur-Mer (French pronunciation: [piʁjak syʁ mɛʁ] , literally Piriac on Sea; Breton: Penc'herieg) is a commune in the Loire-Atlantique department in western France.

Historical population

Year Pop. ±% p.a. 1793 1,054 —     1821 1,056 +0.01% 1846 1,266 +0.73% 1872 1,310 +0.13% 1901 1,301 −0.02% 1926 1,166 −0.44% 1946 1,109 −0.25% 1962 1,127 +0.10%	Year Pop. ±% p.a. 1968 1,134 +0.10% 1975 1,110 −0.31% 1982 1,263 +1.86% 1990 1,442 +1.67% 1999 1,898 +3.10% 2007 2,273 +2.28% 2012 2,173 −0.90% 2017 2,245 +0.65%
Source: EHESS and INSEE (1968-2017)

• La Baule - Guérande Peninsula
• Communes of the Loire-Atlantique department