Sidney is a village in Champaign County, Illinois, United States.

[3] Sidney has a village president and board of trustees.

There were 517 housing units at an average density of 821.94 per square mile (317.35/km2).

There were 503 households, out of which 32.6% had children under the age of 18 living with them, 55.86% were married couples living together, 8.55% had a female householder with no husband present, and 29.62% were non-families.

21.27% of all households were made up of individuals, and 9.74% had someone living alone who was 65 years of age or older.