Serena Township is located in LaSalle County, Illinois. The population was 980 at the 2000 census. Serena Township changed its name from Warren Township in May, 1850.
Population information 
Serena Township is governed from the Village of Serena. The village has been incorporated since the early 1830s, and the Township Hall is located within town. The township has the Serena Fire Protection District, which serves nearby Northville, Mission, Miller, and Freedom Townships. Community Unit School District No. 2, which serves the area, is also headquartered in Serena, with the main High School for the district, as well as a Middle School and Elementary School located there as well. The township has US Highway 52 running through it as well.
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Coordinates: 41°30′33″N 88°45′38″W / 41.509292°N 088.760450°W