Berlin is a village in Sangamon County, Illinois, United States.

[2] According to the 2010 census, Berlin has a total area of 1 square mile (2.59 km2), all land.

There were 69 housing units at an average density of 69.3 per square mile (26.8/km2).

19.4% of all households were made up of individuals, and 11.3% had someone living alone who was 65 years of age or older.

There were 23.1% of families and 21.1% of the population living below the poverty line, including 24.1% of under eighteens and 30.8% of those over 64.