Cottage township is located in Saline County, Illinois. Cottage township has a 2026 population of 218. Cottage township is currently declining at a rate of -0.46% annually and its population has decreased by -4.39% since the most recent census, which recorded a population of 228 in 2020.
The median age in Cottage township is 46.7 years: 46.3 years for males, and 55.3 years for females. For every 100 females there are 133.3 males.