Oncieu

Oncieu
Commune
Coat of arms
Location of Oncieu
Oncieu Show map of France Oncieu Show map of Auvergne-Rhône-Alpes
Coordinates: 45°57′00″N 5°28′00″E / 45.95°N 5.4667°E / 45.95; 5.4667
Country	France
Region	Auvergne-Rhône-Alpes
Department	Ain
Arrondissement	Belley
Canton	Ambérieu-en-Bugey
Intercommunality	Plaine de l'Ain
Government
• Mayor (2020–2026)	Denis Jacquemin[1]
Area ^1	7.76 km^2 (3.00 sq mi)
Population  (2023)[2]	72
• Density	9.3/km^2 (24/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	01279 /01230
Elevation	300–807 m (984–2,648 ft) (avg. 455 m or 1,493 ft)
^1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km^2 (0.386 sq mi or 247 acres) and river estuaries.

Oncieu (French pronunciation: [ɔ̃sjø] ^ⓘ) is a commune in the Ain department and the Auvergne-Rhône-Alpes region in eastern France. Residents of Oncieu are called Onciolans

Geography

The river Albarine forms most of the commune's southern border.

Population

Historical population

Year	Pop.	±% p.a.
1968	63	—
1975	60	−0.69%
1982	63	+0.70%
1990	68	+0.96%
1999	78	+1.54%
2007	91	+1.95%
2012	95	+0.86%
2017	89	−1.30%
Source: INSEE[3]

See also

• Communes of the Ain department

References

1. "Répertoire national des élus: les maires" (in French). data.gouv.fr, Plateforme ouverte des données publiques françaises. 13 September 2022. Archived from the original on 28 June 2020. Retrieved 6 May 2024.
2. "Populations de référence 2023" (in French). National Institute of Statistics and Economic Studies. 18 December 2025.
3. Population en historique depuis 1968 Archived 26 July 2022 at the Wayback Machine, INSEE