[5] At the 2000 census there were 4,757 people, 2,039 households, and 1,455 families living in the village of Lake Barrington.

The population density was 891.6 inhabitants per square mile (344.2/km2).

There were 2,116 housing units at an average density of 396.6 per square mile (153.1/km2).

The racial makeup of the village was 97.41% White, 0.42% African American, 0.19% Native American, 1.07% Asian, 0.06% Pacific Islander, 0.15% from other races, and 0.69% from two or more races.

[10] Of the 2,039 households, 23.7% had children under the age of 18 living with them, 65.8% were married couples living together, 3.9% had a female householder with no husband present, and 28.6% were non-families.