Place
- Harvey, Illinois3
- Hawthorn Woods, Illinois3
- Hazel Crest, Illinois3
- Highland Park, Illinois3
- Highwood, Illinois3
- Hinsdale, Illinois3
- Homer Glen, Illinois3
- Homewood, Illinois3
- Indian Creek, Illinois3
- Ingalls Park, Illinois3
- Inverness, Illinois3
- Island Lake, Illinois3
- Itasca, Illinois3
- Kenilworth, Illinois3
- Kildeer, Illinois3
- Knollwood, Illinois3
- Lake Barrington, Illinois3
- Lake Bluff, Illinois3
- Lake County, Illinois3
- Lake Forest, Illinois3