All of the following territory constitutes the 50th assembly district:
(1) WHOLE COUNTY. Green.
(2) DANE COUNTY. That part of Dane County consisting of all of the following:
(a) The towns of Montrose, Oregon, Perry, Primrose, and Springdale.
(b) The village of Oregon.
(c) That part of the village of Belleville located in the county.
(d) That part of the village of Brooklyn located in the county.
(3) ROCK COUNTY. That part of Rock County consisting of that part of the city of Brodhead located in the county.