Williamson County, Illinois Income Statistics
Williamson County Wealth Score
The wealth index reflects the overall economic prosperity and financial well-being of a county's residents based on income levels, employment rates, and income inequality metrics.
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C
Williamson County Below averageLess wealthy than 70% of counties in Illinois
Source: Map AI Methodology
Income Statistics Overview
| Metric | Williamson County | Illinois Avg | US Average |
|---|---|---|---|
| Median Household Income | $65,527 | $84,042 | $80,455 |
| Median Personal Income | $52,892 | $64,565 | $60,758 |
| Average Yearly Income Growth | 4.6% | 4.5% | 4.8% |
| Six-Figure Earners | 9.7% | 15.0% | 13.9% |
| $200k+ Households | 6.0% | 13.8% | 13.2% |
The median household income in Williamson County is about 22% lower than in Illinois. Income has been growing faster in Williamson County (4.6%/yr) than in Illinois (4.5%/yr).
About 10% of adults in Williamson County earn six figures ($100,000 or more) a year, lower than the Illinois average of 15%.
Median Household Income 2009–2024 Trend
Median Household Income Over Time
Median household income in Williamson County, Illinois grew by 67.0% from 2009 to 2024, reaching $65,527 in 2024. That's an average of about 4.6% per year.
Income Inequality and the Gender Pay Gap in Williamson County
| Metric | Williamson County | Illinois Avg | US Average |
|---|---|---|---|
| Gini Coefficient | 0.533 | 0.547 | 0.552 |
| Male Median Income | $64,376 | $73,933 | $69,667 |
| Female Median Income | $51,027 | $60,067 | $56,850 |
| Gender Pay Gap | 20.7% | 18.8% | 18.4% |
The Gini coefficient measures how evenly income is shared between richer and poorer households, from 0 (everyone earns the same) to 1 (one household earns nearly everything). The lower the number, the more equally income is distributed. In Williamson County, it is 0.533, lower than Illinois's 0.547, so income is more evenly distributed here than there, and lower than the US's 0.552, so income is more evenly distributed here than there.
Men's income is about 26% more than women's income in Williamson County, Illinois. Over a 35-year career, a 26% wage gap accumulates to roughly $467,215 in unearned income for female workers in the area.
Income by Sex Over Time
Since 2009, the income gap between men and women in Williamson County, Illinois has narrowed from about 22% to 21% in 2024. Over that period the gap was widest at 34% in 2014, and was narrowest at 17% in 2023. In dollar terms, the gap has widened by $4,352 since 2009.
Employment
| Metric | Williamson County | Illinois Avg | US Average |
|---|---|---|---|
| Unemployment Rate | 5.0% | 5.8% | 5.2% |
| Working from Home | 8.8% | 15.9% | 15.0% |
| Commute time (minutes) | 18 | 23 | 22 |
Approximately 1,593 people are unemployed in Williamson County, Illinois.
The average commute time in Williamson County is 18 minutes, shorter than the 23 minutes in Illinois.
Unemployment Rate Over Time
Since 2011, the unemployment rate in Williamson County, Illinois has fallen from 8.6% to 5.0% in 2024. Over that period the rate peaked at 9.3% in 2013 and fell as low as 4.3% in 2023.
Williamson County, IL Wealth Compared With Nearby Counties
Williamson County, IL is the largest of the 6 counties compared here, 66,874 residents against a local median of 23,213. The measure that sets Williamson County, IL apart most is unemployment: 5.0%, 33% below the local median of 7.5%. That is the better end of the local range on this measure.
Median household income tells the same story from another angle: $65,527 against a local median of $55,637, 18% above it. Every measure here with a clear better direction points the same way, so Williamson County, IL is not trading one advantage for another, it reads stronger than its neighbours across the board. The counties themselves spread 4.2% on unemployment, so Williamson County, IL sits at one end of an already wide local range rather than apart from it. Williamson County, IL has the 3rd lowest unemployment of the 6 areas compared here.
| Area | Population | Median household income | Income growthAverage yearly change in median household income since 2016. Each year is measured in its own dollars, so this is growth before inflation. | Unemployment | Income inequalityGini coefficient: 0 would mean every household earns the same, 1 that a single household earns everything. The lower the number, the more equally income is shared here. |
|---|---|---|---|---|---|
| Williamson County, IL | 66,874 | $65,527 #1/6 | 4.6%/yr #4/6 | 5.0% #3/6 | 0.533 #1/6 |
| Franklin County, IL | 37,318 | $57,264 | 4.8%/yr | 7.6% | 0.537 |
| Johnson County, IL | 13,376 | $63,615 | 4.7%/yr | 3.5% | 0.619 |
| Saline County, IL | 23,213 | $53,513 | 3.7%/yr | 7.7% | 0.549 |
| Union County, IL | 16,997 | $55,637 | 2.6%/yr | 3.9% | 0.554 |
| Jackson County, IL | 53,061 | $48,884 | 4.7%/yr | 7.5% | 0.588 |
Conclusion
Considering all these factors, Williamson County, Illinois has an overall wealth index grade of C, making it somewhat worse than Illinois, and about on par with the country as a whole.
Frequently Asked Questions
Common questions about income and wealth in Williamson County, Illinois.
How Rich Is Williamson County, Illinois?
Williamson County has a wealth index grade of C. The wealth index grades areas from A+ (best) to F- by combining income levels, employment rates, and income inequality; a C grade means residents are close to the U.S. average. The median household income is $65,527, about 22% lower than the Illinois average of $84,042.
Are incomes growing in Williamson County, Illinois?
Between 2009 and 2024, the median household income in Williamson County, Illinois rose 67%, from $39,235 to $65,527. Over the same years, income here outpaced Illinois as a whole: +67% against +52%.
What was the median household income in Williamson County in 2023?
In 2023, the median household income in Williamson County, Illinois was $65,553, up 9% from $60,336 in 2022. The Illinois median that year was $82,182.
What was the median household income in Williamson County in 2020?
In 2020, the median household income in Williamson County, Illinois was $52,285. By 2024 it had risen 25% to $65,527.
What is the Gini coefficient in Williamson County, Illinois?
The Gini coefficient in Williamson County is 0.533. It measures income inequality on a scale from 0 (everyone earns the same) to 1 (one household earns everything). That is lower than the US average of 0.552, so income is distributed more equally than in the country overall.
How has the income gap between men and women changed in Williamson County, Illinois?
Since 2009, the income gap between men and women in Williamson County, Illinois has narrowed from about 22% to 21% in 2024. Over that period the gap was widest at 34% in 2014, and was narrowest at 17% in 2023. In dollar terms, the gap has widened by $4,352 since 2009.
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