Chadwick is a village in Carroll County, Illinois, United States. The population was 481 at the 2020 census, down from 551 at the 2010 census.

Geography
Chadwick is located at 42°0′51″N 89°53′21″W (42.014081, -89.889078).

According to the 2021 census gazetteer files, Chadwick has a total area of 0.31 square miles (0.80 km2), all land.

Demographics
As of the 2020 census there were 481 people, 256 households, and 163 families residing in the village. The population density was 1,546.62 inhabitants per square mile (597.15/km2). There were 246 housing units at an average density of 791.00 per square mile (305.41/km2). The racial makeup of the village was 96.67% White, 0.42% African American, 0.62% Asian, and 2.29% from two or more races. Hispanic or Latino of any race were 2.49% of the population.

There were 256 households, out of which 30.86% had children under the age of 18 living with them, 51.95% were married couples living together, 5.08% had a female householder with no husband present, and 36.33% were non-families. 31.25% of all households were made up of individuals, and 10.55% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 2.07.

The village's age distribution consisted of 15.5% under the age of 18, 6.0% from 18 to 24, 19.2% from 25 to 44, 35.5% from 45 to 64, and 23.6% who were 65 years of age or older. The median age was 50.4 years. For every 100 females, there were 128.0 males. For every 100 females age 18 and over, there were 125.8 males.

The median income for a household in the village was $50,000, and the median income for a family was $57,039. Males had a median income of $36,908 versus $25,652 for females. The per capita income for the village was $27,324. About 3.7% of families and 4.9% of the population were below the poverty line, including 11.0% of those under age 18 and 3.2% of those age 65 or over.
Given a reference text about Chadwick, Illinois, tell me median family income and the percent of families below the poverty line.
The median family income in Chadwick, Illinois is $57,039 and about 3.7% of families live below the poverty line.