Green Valley, Illinois Demographics & Population 2026

A note before these figures: with a population of 683, Green 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

Green Valley is a small community located in Illinois, within Tazewell County. The total population is 683. It ranks as the 827th most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Green Valley is 37.7 years. This is 3% lower than the state median of 39.0 years.

Economy, Income & Housing

The median household income in Green Valley is $53,500. This is 36% lower than the state median of $83,390. It is also 34% lower than the national median of $80,734. The poverty rate stands at 19.6%. This is 66% higher than the state poverty rate of 11.8%. The unemployment rate is 0.5%. This is 91% lower than the state rate of 5.8%. The median home value is $115,900. Housing costs are 56% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.2x, Green Valley is one of the most affordable housing markets in the area. 65.8% of occupied housing units are owner-occupied. This homeownership rate is 2% lower than the state average of 67.1%.

Race & Ethnicity

Green Valley has a predominantly White (non-Hispanic) population, comprising 96.3% of all residents. Hispanic or Latino residents account for 1.8%. The White (non-Hispanic) population is significantly higher than the state average (96.3% vs 58.1%). The Hispanic or Latino population (1.8%) is well below the state average of 18.8%. The Asian population (0.9%) is well below the state average of 5.9%.

Education

15.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 59% 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 94.0%.

Data Sources & Methodology

All demographic data for Green 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.