Boulder is an unincorporated community in Clinton County, Illinois, United States. Boulder is located on the eastern shore of Carlyle Lake; a railroad line crosses the lake from Boulder to Keyesport.
| Attributes | Values |
|---|---|
| rdfs:comment |
|
| foaf:name |
|
| area code |
|
| country | |
| elevation (μ) |
|
| is part of | |
| time zone | |
| type | |
| UTC offset |
|