Oak Grove village, Illinois Demographics & Population 2026

Population Overview

Oak Grove village is a small community located in Illinois. The total population is 335. It ranks as the 1053rd most populous out of 1,445 cities and towns in Illinois.

Age Demographics

The median age in Oak Grove village is 48.6 years. This is 25% higher than the state median of 38.9 years. 12.2% 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 Oak Grove village is $41,912. This is 49% lower than the state median of $81,702. Compared to the national median of $78,538, household income here is 47% lower. The poverty rate stands at 18.2%. This is 55% higher than the state poverty rate of 11.7%. The unemployment rate is 5.6%. This is 3% lower than the state rate of 5.8%. 88.8% of occupied housing units are owner-occupied. This homeownership rate is 33% higher than the state average of 66.8%.

Race & Ethnicity

Oak Grove village has a predominantly White (non-Hispanic) population, comprising 94.6% of all residents. Hispanic or Latino residents account for 2.4%. The White (non-Hispanic) population is significantly higher than the state average (94.6% vs 58.8%). The Hispanic or Latino population (2.4%) is well below the state average of 18.5%. The Asian population (0.9%) is well below the state average of 5.8%.

Education

9.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 73% 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 89.7%.

Data Sources & Methodology

All demographic data for Oak Grove village, 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.