Dalzell is a village in Bureau and LaSalle counties in the U.S. state of Illinois.

Dalzell was founded on November 24, 1903, and certified on February 11, 1904.

In the 2000 census, all of Dalzell's 717 residents lived in Bureau County.

[7] As of the 2020 census[9] there were 663 people, 265 households, and 195 families residing in the village.

There were 312 housing units at an average density of 377.27 per square mile (145.66/km2).

There were 265 households, out of which 24.2% had children under the age of 18 living with them, 62.26% were married couples living together, 7.92% had a female householder with no husband present, and 26.42% were non-families.

21.89% of all households were made up of individuals, and 10.57% had someone living alone who was 65 years of age or older.