Olive Township, Madison County, Illinois
|Elevation||587 ft (178.9 m)|
|Area||31.52 sq mi (81.6 km2)|
|- land||31.19 sq mi (81 km2)|
|- water||0.33 sq mi (1 km2)|
|Density||57.2/sq mi (22.1/km2)|
|Settled||November 2, 1875|
|- summer (DST)||CDT (UTC-5)|
Olive Township was organized in 1876. Abel Olive was an early settler.
According to the 2010 census, the township has a total area of 31.52 square miles (81.6 km2), of which 31.19 square miles (80.8 km2) (or 98.95%) is land and 0.33 square miles (0.85 km2) (or 1.05%) is water.
- "Population, Housing Units, Area, and Density: 2010 - County -- County Subdivision and Place -- 2010 Census Summary File 1". United States Census. Retrieved 2013-05-28.
- Norton, William T. (1912). Centennial History of Madison County, Illinois, and Its People, 1812 to 1912. The Lewis Publishing Co. p. 587.
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