Gevninge is a small town, with a population of 1,646, in Lejre Municipality on the island of Zealand in Denmark. Its old section is located alongsi…Gevninge is a small town, with a population of 1,646, in Lejre Municipality on the island of Zealand in Denmark. Its old section is located alongside a small river, Lejre Å, approximately 2 kilometres from its mouth at Roskilde Fjord.