Plum Valley CDP, Illinois Demographics & Population 2026

Population Overview

Plum Valley CDP is a small community located in Illinois. The total population is 542. It ranks as the 918th most populous out of 1,445 cities and towns in Illinois.

Age Demographics

The median age in Plum Valley CDP is 47.1 years. This is 21% higher than the state median of 38.9 years. With 31.7% of the population under 18, Plum Valley CDP has a notably young demographic profile, suggesting a family-oriented community. 11.6% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Plum Valley CDP is $213,084. This is 161% higher than the state median of $81,702. Compared to the national median of $78,538, household income here is 171% higher. The poverty rate stands at 1.5%. This is 87% lower than the state poverty rate of 11.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 3.0%. This is 49% lower than the state rate of 5.8%. The median home value is $268,600. Housing costs are 7% higher than the state median of $250,500. With a home-value-to-income ratio of just 1.3x, Plum Valley CDP is one of the most affordable housing markets in the area. 79.9% of occupied housing units are owner-occupied. This homeownership rate is 20% higher than the state average of 66.8%.

Race & Ethnicity

The largest racial or ethnic group in Plum Valley CDP is Black or African American, making up 69.7% of the population. White (non-Hispanic) residents account for 14.9%. The White (non-Hispanic) population (14.9%) is well below the state average of 58.8%. The Black or African American population is significantly higher than the state average (69.7% vs 13.6%).

Education

56.2% of residents aged 25 and older hold a bachelor's degree or higher. This places Plum Valley CDP in the top 10% of all cities in the state for educational attainment. This is 51% higher 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 97.8%. Notably, 34.1% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Plum Valley 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.