St. Jacob Township is located in Madison County, Illinois, in the United States. As of the 2010 census, its population was 2,578 and it contained 981 housing units.
Geography According to the 2010 census, the township has a total area of , of which (or 99.03%) is land and (or 0.97%) is water.
Demographics
References
External links City-data.com Illinois State Archives