Neighbor districts are : Dillingen ( district ) , Augsburg ( district ) , UnterallgÃ u , Neu-Ulm ( district ) , and in Baden-W Ã 1\/4 rttemberg : Alb-Donau and Heidenheim ( district ) ; It is bounded by ( from the north and clockwise ) the districts of Dillingen , Augsburg , UnterallgÃ u and Neu-Ulm , and by the state of Baden-W Ã 1\/4 rttemberg ( districts Alb-Donau and Heidenheim ) .