Allenville, Illinois Demographics & Population 2026

A note before these figures: with a population of 126, Allenville'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

Allenville is a small community located in Illinois, within Moultrie County. The total population is 126. It ranks as the 1303rd most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Allenville is 32.7 years. This is 16% lower than the state median of 39.0 years. With 29.4% of the population under 18, Allenville has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Allenville is $69,250. This is 17% lower than the state median of $83,390. It is also 14% lower than the national median of $80,734. The poverty rate stands at 7.1%. This is 40% lower than the state poverty rate of 11.8%. The survey records no unemployed residents in Allenville, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $95,000. Housing costs are 64% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.4x, Allenville is one of the most affordable housing markets in the area. 75.5% of occupied housing units are owner-occupied. This homeownership rate is 13% higher than the state average of 67.1%.

Race & Ethnicity

Allenville has a predominantly White (non-Hispanic) population, comprising 86.5% of all residents. Hispanic or Latino residents account for 10.3%. The Black or African American population (2.4%) is well below the state average of 13.3%.

Education

9.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 76% 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 95.4%.

Data Sources & Methodology

All demographic data for Allenville, 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.