Indre Østfold is a municipality in the region of Indre Østfold in Østfold county. The municipality was established on 1 January 2020 by a me…Indre Østfold is a municipality in the region of Indre Østfold in Østfold county. The municipality was established on 1 January 2020 by a merger of the five municipalities Askim, Eidsberg, Hobøl, Spydeberg and Trøgstad. The municipality has a total population of just under 45,000, spread out over several small towns such as Askim, Mysen, Spydeberg, Skjønhaug and Tomter. This is quite unusual for Norwegian municipalities.