| Official Name: | Signal Hill, Illinois |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Illinois |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | St. Clair |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 587 |
| Coordinates: | 38.5772°N -90.0567°W |
| Area Code: | 618 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 426531 |
Signal Hill is an unincorporated community in Centreville Township, Stookey Township, and the city of Belleville, St. Clair County, Illinois, United States.[1] Signal Hill is located on Illinois Route 157, approximately 11miles southeast of St. Louis, Missouri.[2] Signal Hill dates back to 1904, during the Saint Louis World Fair, when the Signal Hill Park addition was platted. The tree-lined, island separated, boulevard is the centerpiece of the community filled with large, elegant homes dated to the creation of the community.[3]
Students in the community will attend Signal Hill School, comprising grades Pre-K to 8th grade, and Belleville West High School.
Signal Hill is representative by two active neighborhood associations that liaison with local government officials, and help create public-private partnerships that enrich the community.