| Rock Grove Township | |
|---|---|
| — Township — | |
| Location in Stephenson County | |
| Coordinates: [1] | |
| Country | United States |
| State | Illinois |
| County | Stephenson |
| Government | |
| • Supervisor | George Suess |
| Area | |
| • Total | 30.3 sq mi (78.7 km2) |
| • Land | 30.2 sq mi (78.3 km2) |
| • Water | .1 sq mi (.4 km2) |
| Elevation[1] | 958 ft (292 m) |
| Population (2000) | |
| • Total | 1,402 |
| Time zone | CST (UTC-6) |
| • Summer (DST) | CDT (UTC-5) |
Rock Grove Township is located in Stephenson County, Illinois. The population was 1,402 at the 2000 census. The unincorporated community of Rock Grove is located in the township, and once Duncannon was located here also.
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