Illois, Seine-Maritime

Illois is a commune in the Seine-Maritime department in the Normandy region in northern France.

Illois
Commune
The town hall in Illois
Location of Illois
Illois Location within France Illois Location within Normandy
Coordinates: 49°45′01″N 1°39′00″E
Country	France
Region	Normandy
Department	Seine-Maritime
Arrondissement	Dieppe
Canton	Gournay-en-Bray
Intercommunality	CC Aumale - Blangy-sur-Bresle
Government
• Mayor (2026–32)	Bernard Haudiquert
Area 1	14.54 km2 (5.61 sq mi)
Population  (2023)	381
• Density	26.2/km2 (67.9/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	76372 /76390
Elevation	175–243 m (574–797 ft) (avg. 226 m or 741 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Geography

A small farming village in the Pays de Bray situated some 35 miles (56 km) southeast of Dieppe at the junction of the D82 with the N29 road. The A29 autoroute also passes through the commune.

Population

Historical population

Year	Pop.	±% p.a.
1968	398	—
1975	363	−1.31%
1982	314	−2.05%
1990	259	−2.38%
1999	266	+0.30%
2007	307	+1.81%
2012	371	+3.86%
2017	407	+1.87%
2023	381	−1.09%
Source: INSEE

Places of interest

• The church of St. Aubin, dating from the nineteenth century.
• The church of St. Denis at Coupigny, dating from the sixteenth century.
• The church of St. Germain at the hamlet of Mesnil-David, dating from the seventeenth century.
• Two seventeenth century chateaux, at Blois and at Coupigny.

See also

• Communes of the Seine-Maritime department