| Official Name: | Speer, Illinois |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Illinois#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Stark |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 741 |
| Coordinates: | 40.9883°N -89.6503°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 61479 |
| Area Code: | 309 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 423196 |
Speer is an unincorporated community in Stark County, Illinois, United States, located 8miles southeast of Wyoming. Speer has a post office with ZIP code 61479.[1]
A post office called Speer has been in operation since 1902.[2] The community was named for E. K. and E. M. Speer, the original owners of the town site.[3]