On 1 January 1964, the upper Jondalen valley area (population: 132) of eastern Gransherad was transferred to the neighboring Kongsberg Municipality (in Buskerud county).
In eastern Gransherad on January 1, 1964, the upper Jondalen valley area (populated by 132 people) was moved from Gransherad to Kongsberg Municipality (located in Buskerud county).