ondissement ▁of ▁Th ann - G ue b w iller , ▁( sub p ref ect ure : ▁Th ann ) ▁with ▁ 8 1 ▁communes . ▁The ▁population ▁of ▁the ▁arr ondissement ▁was ▁ 1 3 0 , 2 7 0 ▁in ▁ 2 0 1 6 . ▁ ▁History ▁ ▁In ▁ 1 8 0 0 ▁the ▁arr ond iss ements ▁of ▁Col mar , ▁Alt kir ch , ▁B elf ort , ▁Del ém ont ▁and ▁Por rent ru y ▁were ▁established . ▁In ▁ 1 8 1 4 ▁the ▁arr ond iss ements ▁of ▁Del ém ont ▁and ▁Por rent ru y ▁were ▁dis band ed ▁( ced ed ▁to ▁Switzerland ). ▁In ▁ 1 8 5 7 ▁Mul house ▁replaced ▁Alt kir ch ▁as ▁sub p ref ect ure . ▁In ▁ 1 8 7 1 ▁most ▁of ▁the ▁department ▁was ▁c eded ▁to ▁Germany , ▁except ▁the ▁Ter rito ire ▁de ▁B elf ort ▁that ▁remained ▁French . ▁In ▁ 1 9 1 9 ▁the ▁department ▁of ▁Haut - R hin ▁was ▁restored , ▁with ▁the ▁arr ond iss ements ▁of ▁Col mar - V ille , ▁Col mar - C amp agne , ▁Alt kir ch , ▁G ue b w iller , ▁Mul house , ▁Rib eau v illé ▁and ▁Th ann . ▁In ▁ 1 9 3 4 ▁the ▁arr ond iss ements ▁of ▁Col mar - V ille ▁and ▁Col mar - C amp agne ▁were ▁merged ▁into ▁the ▁new ▁arr ondissement ▁of