| Official Name: | Sidell Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Vermilion |
| Established Title: | Created |
| Established Date: | 1867 |
| Area Total Sq Mi: | 43.38 |
| Area Land Sq Mi: | 43.38 |
| Area Water Sq Mi: | 0 |
| Area Water Percent: | 0 |
| Population As Of: | 2010 |
| Population Density Sq Mi: | 24.7 |
| Elevation M: | 206 |
| Elevation Ft: | 676 |
| Coordinates: | 39.9311°N -87.8772°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Blank Name: | FIPS code |
| Blank Info: | 17-183-69849 |
| Pop Est As Of: | 2016 |
| Pop Est Footnotes: | [1] |
| Population Est: | 1024 |
| Unit Pref: | Imperial |
Sidell Township is a township in Vermilion County, Illinois, USA. As of the 2010 census, its population was 1,073 and it contained 445 housing units.[2]
Sidell Township was created in 1867.
According to the 2010 census, the township has a total area of, all land.[2]
The township contains one cemetery, Fairview.