Auburn city, Illinois Demographics & Population 2026

Population Overview

Auburn city is a small community located in Illinois. The total population is 4,357. It ranks as the 356th most populous out of 1,445 cities and towns in Illinois.

Age Demographics

The median age in Auburn city is 36.0 years. This is 7% lower than the state median of 38.9 years. With 29.2% of the population under 18, Auburn city has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Auburn city is $79,475. This is 3% lower than the state median of $81,702. Compared to the national median of $78,538, household income here is 1% higher. The poverty rate stands at 6.7%. This is 43% lower than the state poverty rate of 11.7%. The unemployment rate is 4.5%. This is 23% lower than the state rate of 5.8%. The median home value is $145,400. Housing costs are 42% lower than the state median of $250,500. With a home-value-to-income ratio of just 1.8x, Auburn city is one of the most affordable housing markets in the area. 84.9% of occupied housing units are owner-occupied. This homeownership rate is 27% higher than the state average of 66.8%.

Race & Ethnicity

Auburn city has a predominantly White (non-Hispanic) population, comprising 91.1% of all residents. Hispanic or Latino residents account for 6.3%. The White (non-Hispanic) population is significantly higher than the state average (91.1% vs 58.8%). The Hispanic or Latino population (6.3%) is well below the state average of 18.5%.

Education

25.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 31% lower than the state rate of 37.2%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 98.0%.

Data Sources & Methodology

All demographic data for Auburn city, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. 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. For official data, visit data.census.gov.