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Congressional District Maps and
Boundary Descriptions
Includes downloadable boundary descriptions of Illinois' 118 State Representative Districts. Each State Senate District comprises two State Representative Districts, i.e., Senate District 1 = State Rep Districts 1 and 2, Senate District 2 = State Rep Districts 3 and 4, and so on. GIS shape files of the districts are also available by contacting our office in Springfield at 217-782-4141.
