Leland Grove, Illinois Demographics & Population 2026

Population Overview

Leland Grove is a small community located in Illinois, within Sangamon County. The total population is 1,517. It ranks as the 580th most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Leland Grove is 47.5 years. This is 22% higher than the state median of 39.0 years. 12.8% 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 Leland Grove is $130,833. This is 57% higher than the state median of $83,390. It is also 62% higher than the national median of $80,734. The poverty rate stands at 2.9%. This is 75% lower than the state poverty rate of 11.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 2.5%. This is 58% lower than the state rate of 5.8%. The median home value is $274,300. Housing costs are 4% higher than the state median of $263,300. With a home-value-to-income ratio of just 2.1x, Leland Grove is one of the most affordable housing markets in the area. 92.9% of occupied housing units are owner-occupied. This homeownership rate is 39% higher than the state average of 67.1%.

Race & Ethnicity

Leland Grove has a predominantly White (non-Hispanic) population, comprising 92.1% of all residents. Black or African American residents account for 2.6%. The White (non-Hispanic) population is significantly higher than the state average (92.1% vs 58.1%). The Black or African American population (2.6%) is well below the state average of 13.3%. The Hispanic or Latino population (1.5%) is well below the state average of 18.8%. The Asian population (2.2%) is well below the state average of 5.9%.

Education

67.6% of residents aged 25 and older hold a bachelor's degree or higher. This places Leland Grove in the top 10% of all cities in the state for educational attainment. This is 79% 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 97.6%. Notably, 36.5% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Leland Grove, 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.