During the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee. On 1 January 1960, the neighboring municipalities of Ålvundeid (population: 513) and Øksendal (population: 497) were merged with Sunndal (population: 5,851) to form a new, larger Sunndal municipality. Both Ålvundeid and Øksendal were historically part of the municipality before 1854. Then, on 1 January 1965, the Ålvund-Ålvundfjorden area of the neighboring Stangvik Municipality (population: 508) was transferred to Sunndal.
During the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee. On 1 January 1960 the neighboring municipalities of Ålvundeid (population: 513) and Øksendal (population: 497) were merged with Sunndal (population: 5,851) to form a new, larger Sunndal municipality. Both Ålvundeid and Øksendal were historically part of the municipality before 1854. Then, on 1 January 1965, the Ålvund-Ålvundfjorden area of the neighboring Stangvik Municipality (population: 508) was transferred to Sunndal.