Big Rock Township is located in Kane County, Illinois. As of the 2010 census, its population was 1,859 and it contained 717 housing units. Most of its land use is agricultural. Geography According to the 2010 census, the township has a total area of , all land. U.S. Route 30 runs east to west through the township. Cities and towns Big Rock Demographics Images Notes References External links Big Rock Township Assessor Official Village of Big Rock website Big Rock Forest Preserve Big Rock Park District Hinckley-Big Rock CUSD 429 1849 establishments in Illinois Big Rock, Illinois Townships in Kane County, Illinois Townships in Illinois