| Cooper, Illinois | |
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| — Unincorporated community — | |
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Cooper, Illinois
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| Coordinates: | |
| Country | United States |
| State | Illinois |
| County | Tazewell |
| Elevation | 810 ft (247 m) |
| Time zone | Central (CST) (UTC-6) |
| • Summer (DST) | CDT (UTC-5) |
| Area code(s) | 309 |
| GNIS feature ID | 422579[1] |
Cooper is an unincorporated community in Tazewell County, Illinois, United States. Cooper is 3 miles (4.8 km) south of Washington.
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