Bais Baès (Gallo) Baez (Breton)
Commune
Saint Mars church
Coat of arms
Location of Bais
Bais Show map of France Bais Show map of Brittany
Coordinates: 48°00′41″N 1°17′21″W / 48.0114°N 1.2892°W / 48.0114; -1.2892
Country	France
Region	Brittany
Department	Ille-et-Vilaine
Arrondissement	Fougères-Vitré
Canton	La Guerche-de-Bretagne
Intercommunality	CA Vitré Communauté
Government
• Mayor (2020–2026)	Nathalie Clouet^[1]
Area ¹	35.18 km² (13.58 sq mi)
Population (2021)^[2]	2,488
• Density	71/km² (180/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	35014 /35680
Elevation	47–109 m (154–358 ft)
¹ French Land Register data, which excludes lakes, ponds, glaciers > 1 km² (0.386 sq mi or 247 acres) and river estuaries.

Bais (French pronunciation: [bɛ]; Breton: Baez; Gallo: Baès) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France. The writer Anne de Tourville (1910–2004), winner of the 1951 Prix Femina, was born in Bais.

Population

Historical population
Year	Pop.	±% p.a.
1968	2,095	—
1975	2,022	−0.51%
1982	1,913	−0.79%
1990	1,821	−0.61%
1999	1,928	+0.64%
2007	2,020	+0.58%
2012	2,152	+1.27%
2017	2,419	+2.37%
Source: INSEE^[3]

Inhabitants of Bais are called Baiséens in French.

Sights

Gallo-Roman remains have been discovered that date from the first century AD.

The church of Saint Mars was built primarily in the 16th century, with expansion in the 19th century. It is dedicated to Saint Mars, bishop of Nantes in the sixth century, who became a hermit in the neighboring village of Marsé.^[4]