Montagnieu, Ain

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Montagnieu
Commune
Chateau
Location of Montagnieu
Montagnieu Show map of France Montagnieu Show map of Auvergne-Rhône-Alpes
Coordinates: 45°47′41″N 5°28′05″E / 45.7947°N 5.4681°E / 45.7947; 5.4681
Country	France
Region	Auvergne-Rhône-Alpes
Department	Ain
Arrondissement	Belley
Canton	Lagnieu
Government
• Mayor (2020–2026)	Jean Roset[1]
Area 1	6.22 km2 (2.40 sq mi)
Population  (2021)[2]	666
• Density	110/km2 (280/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	01255 /01470
Elevation	200–714 m (656–2,343 ft) (avg. 225 m or 738 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Montagnieu (French pronunciation: [mɔ̃taɲø]) is a commune in the Ain department in eastern France. It is sited on the eastern bank of the river Rhone, which forms the border with the Isere department to the west.

The 18th century parish church is dedicated to Saint Didier.