About this sound Ulsteinvik is the commercial and administrative centre of the municipality (kommune) of Ulstein in Møre og Romsdal county, Norway. The 4.26-square-kilometre (1,050-acre) village has a population (2014) of 6,201; giving the village a population density of 1,456 inhabitants per square kilometre (3,770/sq mi). As such, Ulsteinvik contains 74% of the population of Ulstein Municipality.