Seymour CDP, Illinois Demographics & Population 2026

Population Overview

Seymour CDP is a small community located in Illinois. The total population is 333. It ranks as the 1055th most populous out of 1,445 cities and towns in Illinois.

Age Demographics

The median age in Seymour CDP is 29.3 years. This is 25% lower than the state median of 38.9 years. With 39.6% of the population under 18, Seymour CDP has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The poverty rate stands at 15.3%. This is 31% higher than the state poverty rate of 11.7%. The unemployment rate is 0.0%. This is 100% lower than the state rate of 5.8%. The median home value is $135,500. Housing costs are 46% lower than the state median of $250,500. 59.6% of occupied housing units are owner-occupied. This homeownership rate is 11% lower than the state average of 66.8%.

Race & Ethnicity

Seymour CDP has a predominantly White (non-Hispanic) population, comprising 100.0% of all residents. The White (non-Hispanic) population is significantly higher than the state average (100.0% vs 58.8%).

Education

11.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 69% 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 100.0%.

Data Sources & Methodology

All demographic data for Seymour CDP, 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.