Barstow, Illinois Demographics & Population 2026

A note before these figures: with a population of 34, Barstow'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

Barstow is a small community located in Illinois, within Rock Island County. The total population is 34. It ranks as the 1423rd most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Barstow is 36.3 years. This is 7% lower than the state median of 39.0 years. With 32.4% of the population under 18, Barstow has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Barstow is $77,813. This is 7% lower than the state median of $83,390. It is also 4% lower than the national median of $80,734. The ACS records no residents below the poverty line in Barstow. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The survey records no unemployed residents in Barstow, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $159,400. Housing costs are 39% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.0x, Barstow is one of the most affordable housing markets in the area. 69.2% of occupied housing units are owner-occupied. This homeownership rate is 3% higher than the state average of 67.1%.

Race & Ethnicity

Barstow has a predominantly White (non-Hispanic) population, comprising 88.2% of all residents. Hispanic or Latino residents account for 11.8%. The White (non-Hispanic) population is significantly higher than the state average (88.2% vs 58.1%).

Education

8.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 77% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample.

Data Sources & Methodology

All demographic data for Barstow, 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.