Vienna Township, Grundy County, Illinois

[2] (This list is based on USGS data and may include former settlements.)

As of the 2020 census[1] there were 666 people, 375 households, and 232 families residing in the township.

There were 267 housing units at an average density of 7.48 per square mile (2.89/km2).

The racial makeup of the township was 91.29% White, 0.00% African American, 0.45% Native American, 1.35% Asian, 0.00% Pacific Islander, 3.15% from other races, and 3.75% from two or more races.

37.30% of all households were made up of individuals, and 5.90% had someone living alone who was 65 years of age or older.

Map of Illinois highlighting Grundy County