Cortland town, Illinois Demographics & Population 2026
As of 2026, Cortland town, Illinois has a total population of 4,556, the 349th largest city in Illinois, with a median household income of $82,750, which is 1% higher than the state average. The poverty rate is 8.0%.
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 2.5x.
Cortland town Quick Facts
How Cortland town Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 60 | National average: 60
Education
Educational Attainment (Adults 25+)
Cortland town Rankings in Illinois
Explore Illinois Rankings
Cities Similar to Cortland town
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Lebanon city | 4,431 | $84,766 | $146,600 | 40.0% | 7.0% |
| Stone Park village | 4,504 | $75,165 | $218,300 | 7.6% | 11.6% |
| Freeburg village | 4,336 | $84,464 | $231,900 | 32.1% | 12.2% |
| Tuscola city | 4,675 | $77,034 | $148,100 | 25.4% | 7.7% |
| Auburn city | 4,357 | $79,475 | $145,400 | 25.6% | 6.7% |
Population Overview
Cortland town is a small community located in Illinois, within DeKalb County. The total population is 4,556. It ranks as the 349th most populous out of 1,445 cities and towns in Illinois.
Age Demographics
The median age in Cortland town is 31.9 years. This is 18% lower than the state median of 38.9 years.
Economy, Income & Housing
The median household income in Cortland town is $82,750. This is 1% higher than the state median of $81,702. Compared to the national median of $78,538, household income here is 5% higher. The poverty rate stands at 8.0%. This is 32% lower than the state poverty rate of 11.7%. The unemployment rate is 6.1%. This is 4% higher than the state rate of 5.8%. The median home value is $203,700. Housing costs are 19% lower than the state median of $250,500. With a home-value-to-income ratio of just 2.5x, Cortland town is one of the most affordable housing markets in the area. 77.0% of occupied housing units are owner-occupied. This homeownership rate is 15% higher than the state average of 66.8%.
Race & Ethnicity
The largest racial or ethnic group in Cortland town is White (non-Hispanic), making up 71.4% of the population. Hispanic or Latino residents account for 17.4%.
Education
31.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 16% 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 94.1%.
Data Sources & Methodology
All demographic data for Cortland town, 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.
Free data download: Get all Illinois city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Cortland town, Illinois?
Cortland town, Illinois has a population of 4,556 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Cortland town, IL?
The median household income in Cortland town is $82,750, which is 5% higher the national median of $78,538.
What is the poverty rate in Cortland town, IL?
The poverty rate in Cortland town is 8.0%. This means approximately 360 residents live below the federal poverty line.
What is the racial makeup of Cortland town, Illinois?
Cortland town's population is 71.4% White, 9.1% Black, 17.4% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Cortland town, IL?
The median home value in Cortland town is $203,700. The home-value-to-income ratio is 2.5x.
How educated is Cortland town, Illinois?
31.1% of adults (25+) in Cortland town hold a bachelor's degree or higher, and 13.5% hold a graduate or professional degree.