Rances is a municipality in the district of Jura-Nord Vaudois of the canton of Vaud in Switzerland. Rances is first mentioned around 972-73 as …Rances is a municipality in the district of Jura-Nord Vaudois of the canton of Vaud in Switzerland. Rances is first mentioned around 972-73 as Rancias. The name of Rances is apparently derived from a Roman family name, but the exact form of the name has been forgotten. The most dramatic event of its history occurred in 1548, when the village was almost entirely destroyed by an accidental fire.