Original: It is bounded by (from the south and clockwise) the districts of Ravensburg, Sigmaringen, Reutlingen and Alb-Donau, and the Bavarian districts Neu-Ulm, Unterallgäu and the district-free city Memmingen.
Simplified: It is surrounded by (from the south and clockwise) the districts of Ravensburg, Sigmaringen, Reutlingen and Alb-Donau, and the Bavarian districts Neu-Ulm, Unterallgäu and the district-free city Memmingen.