Diamond, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Diamond, Illinois had a total population of 2,984, the 426th largest village in Illinois, with a median household income of $73,201, which is 12% lower than the state average. The poverty rate is 10.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Near full employment with an unemployment rate of just 0.4%.
Diamond Quick Facts
How Diamond 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 | 2,900 | 2,984 | +2.9% |
| Median household income | $60,000 | $73,201 | +22.0% |
| Median home value | $211,500 | $220,200 | +4.1% |
How Diamond 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+)
Diamond Rankings in Illinois
Explore Illinois Rankings
Other Cities in Will County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Joliet | 150,445 | $92,201 | 11.1% | $265,800 |
| Plainfield | 46,708 | $144,000 | 4.2% | $431,400 |
| Romeoville | 41,152 | $106,325 | 5.5% | $257,100 |
| Oswego | 36,375 | $123,792 | 2.6% | $344,500 |
| New Lenox | 28,006 | $140,865 | 1.5% | $399,900 |
| Lockport | 26,409 | $111,981 | 6.8% | $316,000 |
| Crest Hill | 20,628 | $73,033 | 12.0% | $232,900 |
| Mokena | 20,021 | $123,889 | 4.5% | $401,400 |
| Shorewood | 18,343 | $122,105 | 5.2% | $337,800 |
| Channahon | 13,927 | $119,494 | 5.9% | $327,900 |
Cities Similar to Diamond
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Carlyle | 2,980 | $77,273 | $155,000 | 25.4% | 7.9% |
| El Paso | 2,917 | $75,625 | $159,400 | 21.6% | 10.9% |
| Lena | 2,761 | $72,663 | $146,000 | 24.6% | 3.1% |
| Nashville | 2,940 | $63,170 | $156,500 | 21.1% | 6.8% |
| Newton | 2,932 | $61,761 | $95,400 | 20.2% | 11.1% |
Population Overview
Diamond is a small community located in Illinois, within Will County. The total population is 2,984. It ranks as the 426th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Diamond is 35.5 years. This is 9% lower than the state median of 39.0 years. With 30.3% of the population under 18, Diamond has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Diamond is $73,201. This is 12% lower than the state median of $83,390. It is also 9% lower than the national median of $80,734. The poverty rate stands at 10.5%. This is 11% lower than the state poverty rate of 11.8%. The unemployment rate is 0.4%. This is 93% lower than the state rate of 5.8%. The median home value is $220,200. Housing costs are 16% lower than the state median of $263,300. The home-value-to-income ratio is 3.0x. 80.0% of occupied housing units are owner-occupied. This homeownership rate is 19% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Diamond is White (non-Hispanic), making up 83.0% of the population. Hispanic or Latino residents account for 12.4%. The Black or African American population (1.3%) is well below the state average of 13.3%.
Education
12.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 66% 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 96.3%.
Data Sources & Methodology
All demographic data for Diamond, 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.
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Frequently Asked Questions
What is the population of Diamond, Illinois?
Diamond, Illinois has a population of 2,984 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Diamond, IL?
The median household income in Diamond is $73,201, which is 9% lower than the national median of $80,734.
What is the poverty rate in Diamond, IL?
The poverty rate in Diamond is 10.5%. This means approximately 313 residents live below the federal poverty line.
What is the racial makeup of Diamond, Illinois?
Diamond's population is 83.0% White, 1.3% Black, 12.4% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Diamond, IL?
The median home value in Diamond is $220,200. The home-value-to-income ratio is 3.0x.
How educated is Diamond, Illinois?
12.9% of adults (25+) in Diamond hold a bachelor's degree or higher, and 5.1% hold a graduate or professional degree.