Mejlby is a town in Aarhus Municipality, Central Denmark Region in Denmark with a population of 407 (1 January 2025). Mejlby is situated the northern section of Aarhus Municipality, 20 kilometers from the city of Aarhus. The closest towns are HÃÂ¥rup, one kilometer to the south, Lystrup five kilometers to the south and Spørring three kilometers to the west. E45 passes by six kilometers to the west of the town.