The municipality of Rømskog, in Østfold county was merged into Aurskog-Høland on 1 January 2020.

The name Aurskog comes from the old Ør farm (Old Norse: Aurr which means "gravel").

To place the whole composition in a shield to create the arms was not allowed according to Norwegian heraldic rules, so the crayfish was chosen as a symbol.

[5][6] It is the biggest municipality in Akershus, covering 967 square kilometres (373.4 sq mi).

An important printing office, PDC Tangen AS and a crushing mill are situated here.