Hillion

Commune in Brittany, France

Hillion Hilion
Commune
The Pointe du Grouin, at Hillion The Pointe du Grouin, at Hillion
Flag of Hillion Flag Coat of arms of Hillion Coat of arms
Location of Hillion Map
Hillion is located in France Hillion Hillion Show map of France Hillion is located in Brittany Hillion Hillion Show map of Brittany
Coordinates: 48°30′51′′N 2°40′03′′W / 48.5142°N 2.6675°W / 48.5142; -2.6675
Country	France
Region	Brittany
Department	Côtes-d'Armor
Arrondissement	Saint-Brieuc
Canton	Trégueux
Intercommunality	Saint-Brieuc Armor
Government
• Mayor (2022–2026)	Annie Guennou^[1]
Area ¹	24.76 km² (9.56 sq mi)
Population (2022)^[2]	4,304
• Density	170/km² (450/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	22081 /22120
Elevation	0–86 m (0–282 ft)
¹ French Land Register data, which excludes lakes, ponds, glaciers > 1 km² (0.386 sq mi or 247 acres) and river estuaries.

Hillion (French pronunciation: [iljɔ̃] ⁱ; Breton: Helion; Gallo: Hilion) is a commune in the Côtes-d'Armor department of Brittany in northwestern France.

Economy

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Mussel farming is an important activity since 10% of French mussels, about 3 000 to 4 000 tons are produced in Hillion^{[citation needed ]}. The species are Mytilus galloprovincialis, adapted to the climate, and Mytilus edulis. Each year, the festival "La fete de la moule" (mussels festival) is held in August in the mussels farm.

Population

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Inhabitants of Hillion are called hillionnais in French.

Historical population

Year	Pop.	±% p.a.
1793	1,773	—
1800	1,627	−1.22%
1806	1,857	+2.23%
1821	2,430	+1.81%
1831	2,518	+0.36%
1836	2,527	+0.07%
1841	2,700	+1.33%
1846	2,873	+1.25%
1851	2,748	−0.89%
1856	2,708	−0.29%
1861	2,710	+0.01%
1866	2,649	−0.45%
1872	2,553	−0.61%
1876	2,638	+0.82%
1881	2,648	+0.08%
1886	2,666	+0.14%
1891	2,644	−0.17%
1896	2,723	+0.59%

Year	Pop.	±% p.a.
1901	2,589	−1.00%
1906	2,473	−0.91%
1911	2,317	−1.29%
1921	2,029	−1.32%
1926	1,971	−0.58%
1931	1,953	−0.18%
1936	1,950	−0.03%
1946	1,957	+0.04%
1954	2,006	+0.31%
1962	2,122	+0.71%
1968	2,235	+0.87%
1975	2,858	+3.58%
1982	3,232	+1.77%
1990	3,591	+1.33%
1999	3,786	+0.59%
2007	4,031	+0.79%
2012	4,049	+0.09%
2017	4,137	+0.43%