Argyle, Illinois Demographics & Population 2026

A note before these figures: with a population of 324, Argyle'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

Argyle is a small community located in Illinois, within Winnebago County. The total population is 324. It ranks as the 1059th most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Argyle is 61.1 years. This is 57% higher than the state median of 39.0 years. Only 10.8% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Argyle is $139,632. This is 67% higher than the state median of $83,390. It is also 73% higher than the national median of $80,734. The ACS records no residents below the poverty line in Argyle. 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 Argyle, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $277,400. Housing costs are 5% higher than the state median of $263,300. With a home-value-to-income ratio of just 2.0x, Argyle is one of the most affordable housing markets in the area. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 49% higher than the state average of 67.1%.

Race & Ethnicity

The largest racial or ethnic group in Argyle is White (non-Hispanic), making up 84.6% of the population. Hispanic or Latino residents account for 13.6%.

Education

41.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 11% 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 95.2%. Notably, 28.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Argyle, 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.