Cambridge, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Cambridge, Illinois had a total population of 2,128, the 492nd largest village in Illinois, with a median household income of $64,979, which is 22% lower than the state average. The poverty rate is 13.1%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 1.9x.
Cambridge Quick Facts
How Cambridge Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 2,184 | 2,128 | -2.6% |
| Median household income | $72,292 | $64,979 | -10.1% |
| Median home value | $120,400 | $123,100 | +2.2% |
How Cambridge Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Cambridge Rankings in Illinois
Explore Illinois Rankings
Other Cities in Henry County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Kewanee | 11,913 | $50,886 | 17.9% | $73,200 |
| Geneseo | 6,673 | $70,147 | 2.6% | $205,400 |
| Colona | 5,139 | $79,700 | 3.8% | $147,500 |
| Galva | 2,454 | $52,470 | 18.8% | $83,700 |
| Orion | 1,812 | $94,375 | 5.2% | $178,500 |
| Atkinson | 982 | $57,174 | 5.7% | $119,600 |
| Annawan | 865 | $70,729 | 6.7% | $135,100 |
| Alpha | 831 | $77,639 | 1.6% | $111,400 |
| Woodhull | 731 | $65,893 | 13.3% | $122,400 |
| Andover | 434 | $77,813 | 3.7% | $163,600 |
Cities Similar to Cambridge
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Mason City | 2,159 | $66,524 | $91,100 | 21.1% | 16.7% |
| Farmington | 2,050 | $65,223 | $101,300 | 25.9% | 11.0% |
| Bellevue | 2,106 | $60,987 | $121,300 | 12.0% | 11.6% |
| Lake of the Woods | 2,091 | $61,625 | $193,500 | 38.3% | 4.7% |
| Nokomis | 2,147 | $60,326 | $83,900 | 11.9% | 9.4% |
Population Overview
Cambridge is a small community located in Illinois, within Henry County. The total population is 2,128. It ranks as the 492nd most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Cambridge is 34.7 years. This is 11% lower than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Cambridge is $64,979. This is 22% lower than the state median of $83,390. It is also 20% lower than the national median of $80,734. The poverty rate stands at 13.1%. This is 11% higher than the state poverty rate of 11.8%. The unemployment rate is 7.5%. This is 29% higher than the state rate of 5.8%. The median home value is $123,100. Housing costs are 53% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.9x, Cambridge is one of the most affordable housing markets in the area. 87.4% of occupied housing units are owner-occupied. This homeownership rate is 30% higher than the state average of 67.1%.
Race & Ethnicity
Cambridge has a predominantly White (non-Hispanic) population, comprising 88.3% of all residents. Black or African American residents account for 1.8%. The White (non-Hispanic) population is significantly higher than the state average (88.3% vs 58.1%). The Black or African American population (1.8%) is well below the state average of 13.3%. The Asian population (1.4%) is well below the state average of 5.9%.
Education
15.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 59% lower 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 94.4%.
Data Sources & Methodology
All demographic data for Cambridge, 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.
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 Cambridge, Illinois?
Cambridge, Illinois has a population of 2,128 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Cambridge, IL?
The median household income in Cambridge is $64,979, which is 20% lower than the national median of $80,734.
What is the poverty rate in Cambridge, IL?
The poverty rate in Cambridge is 13.1%. This means approximately 266 residents live below the federal poverty line.
What is the racial makeup of Cambridge, Illinois?
Cambridge's population is 88.3% White, 1.8% Black, 0.0% Hispanic/Latino, and 1.4% Asian.
What is the median home value in Cambridge, IL?
The median home value in Cambridge is $123,100. The home-value-to-income ratio is 1.9x.
How educated is Cambridge, Illinois?
15.6% of adults (25+) in Cambridge hold a bachelor's degree or higher, and 2.3% hold a graduate or professional degree.