Kjósarhreppur

Kjósarhreppur
The Laxá river flows through Kjósarhreppur
Location of the municipality
CountryIceland
RegionCapital Region
ConstituencySouthwest Constituency
Government
 • ManagerKarl Magnús Kristjánsson
Area
 • Total
284 km2 (110 sq mi)
Population
 (2025)
 • Total
301
 • Density1.06/km2 (2.75/sq mi)
Postal code(s)
276
Municipal number1606
Websitekjos.is

Kjósarhreppur (Icelandic pronunciation: [ˈcʰouːsar̥ˌr̥ehpʏr̥] ), colloquially known as Kjós [ˈcʰouːs], is a municipality in Iceland. It is the most northern part of the Capital Region and is adjacent to Reykjavík, Bláskógabyggð, and Hvalfjarðarsveit. Kjós is sometimes referred to as "a countryside in a city" (sveit í borg) due to its proximity to Reykjavík.

The primary industry in Kjós is agriculture. It is home to a number of lakes and rivers, including the Laxá í Kjós, one of the most popular sites for salmon fishing in the country.

In 2025, some specimens of Culiseta annulata were found in the municipality that had been free of mosquitoes due of climate change.