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Regional Transportation Authority
Mapping and Statistics (RTAMS)
Political Jurisdictions
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Political Jurisdictions

Jurisdiction Inventories
  Counties

Municipalities

County Board Districts

US Congressional Districts

Illinois Senate Districts

Illinois House Districts

Chicago Wards

Councils of Mayors

Search Data by Jurisdiction
Much of the data in the RTAMS may be searched by political jurisdiction, including counties, municipalities, U.S. congressional districts, Illinois senate districts, Illinois house districts, Chicago wards, and councils of mayors.

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