Askim is the largest population centre in Indre Østfold with 15 315 inhabitants (2012), and surves as a regional senter for 9 municipalities in Indre Østfold. It lies next to the longest river in Norway, Glomma, which forms the border with Spydeberg to the north and west, and Skiptvet to the south. Askim also borders Trøgstad to the northeast a...