Ottawa Township, LaSalle County, Illinois

Ottawa Township is located in LaSalle County, Illinois. As of the 2010 census, its population was 11,766 and it contained 5,601 housing units.

Geography
According to the 2010 census, the township has a total area of 16.12 sqmi, of which 15.2 sqmi (or 94.29%) is land and 0.93 sqmi (or 5.77%) is water.

Government
Ottawa Township is the center of the county government, with an Appellate Court branch, the County Courthouse, and County Offices located within Ottawa proper and within Ottawa Township.