Troy Grove, Illinois Demographics & Population 2026

A note before these figures: with a population of 300, Troy Grove'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

Troy Grove is a small community located in Illinois, within LaSalle County. The total population is 300. It ranks as the 1080th most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Troy Grove is 30.8 years. This is 21% lower than the state median of 39.0 years. With 29.3% of the population under 18, Troy Grove has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Troy Grove is $83,917. This is about the same as the state median of $83,390. It is also 4% higher than the national median of $80,734. The poverty rate stands at 47.3%. This is 301% higher than the state poverty rate of 11.8%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The survey records no unemployed residents in Troy Grove, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $200,800. Housing costs are 24% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.4x, Troy Grove is one of the most affordable housing markets in the area. 88.3% of occupied housing units are owner-occupied. This homeownership rate is 32% higher than the state average of 67.1%.

Race & Ethnicity

The largest racial or ethnic group in Troy Grove is White (non-Hispanic), making up 55.3% of the population. Hispanic or Latino residents account for 42.7%. The Hispanic or Latino population is significantly higher than the state average (42.7% vs 18.8%).

Education

30.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 20% lower 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 78.9%.

Data Sources & Methodology

All demographic data for Troy Grove, 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.