Trout Valley is a village in McHenry County, Illinois, United States. It was incorporated as a village on 19 March 1996. At the 2010 census, the population was at 537.
Trout Valley is located at 42°11′57″N 88°15′12″W / 42.19917°N 88.25333°W / 42.19917; -88.25333 (42.199265, -88.253357).
According to the 2010 census, Trout Valley has a total area of 0.432 square miles (1.12 km), of which 0.43 square miles (1.11 km) (or 99.54%) is land and 0.002 square miles (0.01 km) (or 0.46%) is water. There are various small ponds with streams that connect them. The village rests against the Fox River.
As of the census of 2000, there were 599 people, 197 households, and 176 families residing in the village. The population density was 1,399.7 people per square mile (537.8/km²). There were 200 housing units at an average density of 467.3 per square mile (179.6/km²). The racial makeup of the village was 94.66% White, 0.67% African American, 1.00% Asian, 1.17% from other races, and 2.50% from two or more races. Hispanic or Latino of any race were 4.17% of the population.
There were 197 households out of which 40.1% had children under the age of 18 living with them, 85.3% were married couples living together, 3.6% had a female householder with no husband present, and 10.2% were non-families. 6.1% of all households were made up of individuals and 3.6% had someone living alone who was 65 years of age or older. The average household size was 3.04 and the average family size was 3.18.
In the village, the population was spread out with 30.9% under the age of 18, 4.0% from 18 to 24, 23.9% from 25 to 44, 30.7% from 45 to 64, and 10.5% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 101.7 males. For every 100 females age 18 and over, there were 97.1 males.
The median income for a household in the village was $99,297, and the median income for a family was $102,603. Males had a median income of $91,504 versus $37,344 for females. The per capita income for the village was $58,013. About 3.3% of families and 3.4% of the population were below the poverty line, including 3.2% of those under age 18 and 3.3% of those age 65 or over.