▁east ▁of ▁Had ers lev . ▁It ▁is ▁also ▁the ▁name ▁of ▁the ▁narrow ▁stra it ▁between ▁the ▁village ▁and ▁the ▁island ▁of ▁Å r ø . ▁It ▁has ▁a ▁population ▁of ▁ 3 0 5 ▁( 1 ▁January ▁ 2 0 1 9 ) ▁and ▁is ▁part ▁of ▁the ▁municipality ▁of ▁Had ers lev ▁and ▁the ▁regional ▁entity ▁Region ▁of ▁Southern ▁Den mark , ▁as ▁well ▁as ▁the ▁parish ▁of ▁ Ø s by . ▁ ▁In ▁spite ▁of ▁its ▁slight ▁size , ▁A ar ø s und ▁has ▁a ▁significant ▁part ▁in ▁Dan ish ▁history . ▁Arch ae ological ▁surve ys ▁have ▁shown ▁the ▁area ▁to ▁have ▁been ▁inhab ited ▁since ▁the ▁Iron ▁Age ▁with ▁the ▁occurrence ▁of ▁an ▁abund ance ▁of ▁fl int ▁tools ▁suggesting ▁an ▁even ▁earlier ▁settlement ▁here . ▁ ▁In ▁ 1 2 3 1 ▁King ▁Val dem ar ' s ▁cad aster ▁mentions ▁the ▁King ' s ▁so vere ig nt y ▁of ▁the ▁fer ry ▁route ▁between ▁A ar ø s und ▁and ▁Ass ens ▁on ▁the ▁island ▁of ▁F yn . ▁In ▁ 1 6 4 0 ▁the ▁Royal ▁Dan ish ▁mail ▁services ▁decided ▁on ▁the ▁Ass ens - A ar ø s und ▁fer ry ▁service ▁- ▁instead ▁of ▁the ▁fer ry ▁service ▁connecting ▁M idd elf art ▁and ▁S nog h ø j ▁- ▁to ▁be ▁part ▁of ▁the ▁most ▁important , ▁Dan ish ▁postal ▁route ▁of ▁its ▁day , ▁K ø ben hav n - H amb urg . ▁ ▁The