Os Municipality (Innlandet)

Os Municipality
Os kommune
Innlandet within Norway
Os within Innlandet
Coordinates: 62°28′34″N 11°14′35″E / 62.47611°N 11.24306°E / 62.47611; 11.24306
CountryNorway
CountyInnlandet
DistrictØsterdalen
Established1 July 1926
 • Preceded byTolga Municipality
Disestablished1 Jan 1966
 • Succeeded byTolga-Os Municipality
Re-established1 Jan 1976
 • Preceded byTolga-Os Municipality
Administrative centreOs i Østerdalen
Government
 • Mayor (2023)Ivar Midtdal (Sp)
Area
 • Total
1,040.40 km2 (401.70 sq mi)
 • Land1,006.74 km2 (388.70 sq mi)
 • Water33.66 km2 (13.00 sq mi)  3.2%
 • Rank#110 in Norway
Highest elevation
1,592.91 m (5,226.1 ft)
Population
 (2025)
 • Total
1,895
 • Rank#289 in Norway
 • Density1.8/km2 (4.7/sq mi)
 • Change (10 years)
 −6.1%
DemonymOsing
Official language
 • Norwegian formNeutral
Time zoneUTC+01:00 (CET)
 • Summer (DST)UTC+02:00 (CEST)
ISO 3166 codeNO-3430
WebsiteOfficial website

Os is a municipality in Innlandet county, Norway. It is located in the traditional district of Østerdalen. The administrative centre of the municipality is the village of Os i Østerdalen. Other villages in the municipality include Dalsbygda, Narbuvoll, and Tufsingdalen.

The 1,040-square-kilometre (400 sq mi) municipality is the 110th largest by area out of the 357 municipalities in Norway. Os Municipality is the 289th most populous municipality in Norway with a population of 1,895. The municipality's population density is 1.8 inhabitants per square kilometre (4.7/sq mi) and its population has decreased by 6.1% over the previous 10-year period.