Brooklyn Township is one of twenty-two townships in Lee County, Illinois, USA. As of the 2010 census, its population was 793 and it contained 358 housing units. In September 1858, Reynolds Township was formed from part of Brooklyn Township.
According to the 2010 census, the township has a total area of , of which (or 99.97%) is land and (or 0.03%) is water.
(This list is based on USGS data and may include former settlements.)
(This town is listed as "historical" by the USGS.)
The township contains these four cemeteries: Brooklyn, Brooklyn Lutheran, Saint Mary's and Union.