| Unit Pref: | Imperial |
| Settlement Type: | Township |
| Official Name: | Buckeye Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Stephenson |
| Leader Title: | Supervisor |
| Leader Name: | Brad Cummins |
| Area Total Sq Mi: | 36.11 |
| Area Land Sq Mi: | 36.11 |
| Area Water Sq Mi: | 0 |
| Area Water Percent: | 0 |
| Population As Of: | 2010 |
| Population Density Sq Mi: | 37.6 |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Coordinates: | 42.4°N -89.6167°W |
| Elevation Ft: | 863 |
| Pop Est As Of: | 2016 |
| Pop Est Footnotes: | [1] |
| Population Est: | 1308 |
| Blank Name: | FIPS code |
| Blank Info: | 17-177-09226 |
Buckeye Township is located in Stephenson County, Illinois. As of the 2010 census, its population was 1,359 and it contained 596 housing units.[2] The communities of Cedarville, Red Oak, Buena Vista, Afolkey and Buckhorn Corners are located in the township.
Buckeye is Township 28 North, Ranges 7 (part) and 8 (part) East of the Fourth Principal Meridian.
According to the 2010 census, the township has a total area of, all land.[2]