Trout Valley, Illinois Demographics & Population 2026

A note before these figures: with a population of 574, Trout Valley's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Trout Valley is a small community located in Illinois, within McHenry County. The total population is 574. It ranks as the 888th most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Trout Valley is 54.2 years. This is 39% higher than the state median of 39.0 years.

Economy, Income & Housing

The median household income in Trout Valley is $217,292. This is 161% higher than the state median of $83,390. It is also 169% higher than the national median of $80,734. The poverty rate stands at 2.6%. This is 78% lower than the state poverty rate of 11.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 2.8%. This is 53% lower than the state rate of 5.8%. The median home value is $446,200. Housing costs are 69% higher than the state median of $263,300. With a home-value-to-income ratio of just 2.1x, Trout Valley is one of the most affordable housing markets in the area. 98.3% of occupied housing units are owner-occupied. This homeownership rate is 46% higher than the state average of 67.1%.

Race & Ethnicity

Trout Valley has a predominantly White (non-Hispanic) population, comprising 90.2% of all residents. Hispanic or Latino residents account for 4.5%. The White (non-Hispanic) population is significantly higher than the state average (90.2% vs 58.1%). The Black or African American population (1.7%) is well below the state average of 13.3%. The Hispanic or Latino population (4.5%) is well below the state average of 18.8%. The Asian population (0.4%) is well below the state average of 5.9%.

Education

69.4% of residents aged 25 and older hold a bachelor's degree or higher. This places Trout Valley in the top 10% of all cities in the state for educational attainment. This is 83% higher than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 99.8%. Notably, 33.1% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Trout Valley, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.