United States/Illinois/Cook County
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This page is the Cook County, IL mapping project. Please document mapping guidelines here and report problems. Discussions about how to map in Cook County should be posted to the Talk page.
Note: working with administrative boundaries should be done in JOSM; using the web editor for this work can cause unexpected problems!
Data Sources
The data sources below should be used instead of TIGER data or the Cook County GIS:
Current Issues
- 2 missing towns in Northfield Township
- Various boundary errors and warnings across Cook County