🇳🇴 Sandnessjøen is a town and the administrative centre of Alstahaug Municipality in Nordland county, Norway. Sandnessjøen was granted special trading privileges in the late 1600s and it received town status in 1999. Sandnessjøen is located on the island of Alsta, just west of the De syv søstre (The Seven Sisters) mountain range.
The Helgeland District has a population of over 79,000 people. It is also a part of the larger Nordland County. Sandnessjøen is situated near Mo i Rana.