Area 829 km2 (320 sq mi)
Population (2007) 20,300
Density 24.5/km2 (63/sq mi)
The Reykjanes peninsula is made up of 5 municipalities; Gardur, Grindavik, Reykjanesbaer, Sandgerdi and Vogar, with the biggest one being Reykjanesbaer. There are around twenty thousand inhabitants on the peninsula in total.
One of the most famous attractions on Reykjanes peninsula is the Blue Lagoon, near to Grindavik.
Reykjanes peninsula is a Geopark and the only place in the world where the Mid-Atlantic Ridge is visible above sea level. The Reykjanes Geopark has 55 areas listed as geosites, such as Gunnuhver mud pool, Eldey island, Kleifarvatn lake and Reykjanes lighthouse.
On March 19.mars 2021 an eruption started just north west of the hiking trail Sudurlandsvegur (R-427) to Mt. Fagradalsfjall. Earthquakes and tremours had been monitored for few weeks be for the eruption.
You can see a film from the third day of the eruption taken by Runar Geirmundsson Eldgos á Reykjanesi.