Greene County, Illinois Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Greene County, IL Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
-
B
Health Around averageLess healthy than 76% of counties in Illinois
-
C
Income Below averageLess wealthy than 73% of counties in Illinois
-
F
Education Well below averageLess educated than 94% of counties in Illinois
Source: Map AI Methodology
Population: density and quick facts
| Metric | Greene County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Population | 11,683 | 12,692,444 | 337,468,954 |
| Population density (per sq mi) | 21.4 | 219.1 | 86.4 |
| Population growth (%/yr) | -1.68% | -0.16% | 0.59% |
| Median age | 41.7 | 37.4 | 37.3 |
| Households | 4,451 | 5,035,584 | 130,235,071 |
Population in Greene County declined by 15.2% from 2009 to 2024, reaching 11,683 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Greene County is Gen X, aged 45–60, at 22.4% of residents. That is 2.0 points above Illinois as a whole.
- Gen Z 13–28 2,198 18.8% -2.4 pts
- Millennials 29–44 2,222 19.0% -2.9 pts
- Gen X 45–60 2,616 22.4% +2.0 pts
- Boomers 61–79 2,316 19.8% +2.9 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Illinois, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 49.7% of the people living in Greene County and men 50.3%.
- Women 49.7% Illinois 50.6%
- Men 50.3% Illinois 49.4%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Greene County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Greene County has a the economy index of C, which means it is somewhat prosperous.
| Metric | Greene County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median household income | $64,089 | $84,042 | $80,455 |
| Income growth (%/yr) | 5.20% | 4.46% | 4.80% |
| Unemployment rate | 4.9% | 5.8% | 5.2% |
The median household income in Greene County is about 24% lower than in Illinois.
Housing
| Metric | Greene County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median home price | $80,832 | $149,936 | $248,835 |
| Median rent | $754 | $1,274 | $1,407 |
| Homeownership rate | 78.2% | 67.1% | 65.2% |
The median home price in Greene County is about 8.9 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $754 per month for that long.
Commute Time & Mobility
Commuters in Greene County spend about 47 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 194 hours, about 8.1 full days, spent commuting.
| Metric | Greene County | Illinois Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 23.3 | 23.6 | 22.4 |
| Round-trip commute (min) | 46.7 | 47.3 | 44.8 |
| Yearly time spent (hours) | 194 | 197 | 187 |
| Estimated yearly cost | $6,028 | $6,104 | $5,790 |
| Work from home | 10.0% | 15.9% | 15.0% |
| Highway traffic (vehicles/day) | 1,782 | 7,977 | 8,813 |
| Local road traffic (vehicles/day) | 426 | 1,547 | 1,355 |
Fastest commutes among counties in
Illinois:
Edgar County (12.0 min), Brown County (12.7 min), Morgan County (13.1 min).
Slowest:
Calhoun County (43.8 min), Pulaski County (31.2 min), Pope County (31.0 min).
The average commute time in Greene County is 23 minutes, shorter than the 24 minutes in Illinois.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Greene County has a education index of F, which means it scores poorly in education.
| Metric | Greene County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 14.6% | 34.1% | 31.6% |
| Average household size | 2.58 | 2.46 | 2.53 |
Highest education index among counties in
Illinois:
DuPage County (0.4), Champaign County (0.4), Lake County (0.4).
Lowest:
Hardin County (0.2), Fayette County (0.2), Perry County (0.2).
Health
Greene County has a health index of B, which means it is quite healthy.
| Metric | Greene County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 76.9 | 77.9 | 78.3 |
| Self-rated poor health | 16.4% | 15.6% | 16.3% |
| Smokers | 21.1% | 19.2% | 19.0% |
Highest health index among counties in
Illinois:
DuPage County (0.8), Champaign County (0.8), Monroe County (0.8).
Lowest:
Alexander County (0.8), Pulaski County (0.8), Gallatin County (0.8).
Greene County, IL Compared With Nearby Counties
Greene County, IL is the smallest of the 4 counties compared here, 11,683 residents against a local median of 33,021. There is no headline here. Every measure below sits within 15% of the median across the nearest counties, which makes Greene County, IL an unremarkable member of its own neighbourhood rather than an outlier in it.
The largest of those small differences is median home price, 14% below the local median at $80,832 against $93,502. Greene County, IL has the 3rd highest median home price of the 4 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Greene County, IL | 11,683 | $64,089 #4/4 | $80,832 #3/4 | 23.3 min #4/4 |
| Jersey County, IL | 21,266 | $78,198 | $129,386 | 22.8 min |
| Morgan County, IL | 33,021 | $65,762 | $93,502 | 13.1 min |
| Macoupin County, IL | 44,343 | $72,437 | $69,312 | 23.2 min |
Frequently Asked Questions
Common questions about Greene County, Illinois.
How many people live in Greene County, Illinois?
About 11,683 people live in Greene County, Illinois, in 4,451 households of 2.6 people on average. The median age is 41.7, so residents are older than the U.S. median of 37.3 by about 4 years.
Is Greene County, Illinois mostly urban or rural?
Averaged over its land area, Greene County, Illinois has 21 people per square mile, a density typical of rural areas. That is about 25% of the U.S. average of 86.
Can a typical household afford a home in Greene County, Illinois?
The median home costs 1.3 times the median household income ($80,832 against $64,089), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $754 a month takes about 14% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How common is a college degree in Greene County, Illinois?
14.6% of adults in Greene County, Illinois hold a bachelor's degree or higher (about 1 in 7), well below the U.S. share of 31.6%.
Analyze any area in the US
Get local demographics for any address, aggregated by drive time or radius, on the interactive map.
Explore the map →