Montgomery, Illinois Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Montgomery, 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.
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B
Health Around average
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B
Income Around average
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C
Education Below average
Source: Map AI Methodology
Population
| Metric | Montgomery | Illinois Avg | U.S. Average |
|---|---|---|---|
| Population | 21,311 | 12,692,444 | 337,468,954 |
| Population density (per sq mi) | 2089.4 | 219.1 | 86.4 |
| Population growth (%/yr) | 5.02% | -0.16% | 0.59% |
| Median age | 38.2 | 37.4 | 37.3 |
| Households | 7,428 | 5,035,584 | 130,235,071 |
Population in Montgomery grew by 27.0% from 2009 to 2024, reaching 21,311 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Montgomery is Millennials, aged 29–44, at 25.2% of residents. That is 3.3 points above Illinois as a whole.
- Gen Z 13–28 4,751 22.3% +1.0 pts
- Millennials 29–44 5,362 25.2% +3.3 pts
- Gen X 45–60 4,143 19.4% -1.0 pts
- Boomers 61–79 2,429 11.4% -5.5 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 49.3% of the people living in Montgomery and men 50.7%.
- Women 49.3% Illinois 50.6%
- Men 50.7% Illinois 49.4%
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Economy
Montgomery has a the economy index of B, which means it is quite prosperous.
| Metric | Montgomery | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median household income | $97,530 | $84,042 | $80,455 |
| Income growth (%/yr) | 4.73% | 4.46% | 4.80% |
| Unemployment rate | 4.3% | 5.8% | 5.2% |
The median household income in Montgomery is about 16% higher than in Illinois.
Housing
| Metric | Montgomery | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median home price | $195,717 | $149,936 | $248,835 |
| Median rent | $1,664 | $1,274 | $1,407 |
| Homeownership rate | 75.4% | 67.1% | 65.2% |
The median home price in Montgomery is about 9.8 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,664 per month for that long.
Commute Time & Mobility
Commuters in Montgomery spend about 60 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 252 hours, about 10.5 full days, spent commuting.
| Metric | Montgomery | Illinois Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 30.2 | 23.6 | 22.4 |
| Round-trip commute (min) | 60.4 | 47.3 | 44.8 |
| Yearly time spent (hours) | 252 | 197 | 187 |
| Estimated yearly cost | $7,808 | $6,104 | $5,790 |
| Work from home | 13.5% | 15.9% | 15.0% |
| Highway traffic (vehicles/day) | — | 7,977 | 8,813 |
| Local road traffic (vehicles/day) | 3,847 | 1,547 | 1,355 |
The average commute time in Montgomery is 30 minutes, longer 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
Montgomery has a education index of C, which means it is somewhat educated.
| Metric | Montgomery | Illinois Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 28.1% | 34.1% | 31.6% |
| Average household size | 2.87 | 2.46 | 2.53 |
Health
Montgomery has a health index of B, which means it is quite healthy.
| Metric | Montgomery | Illinois Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 77.9 | 77.9 | 78.3 |
| Self-rated poor health | 13.3% | 15.6% | 16.3% |
| Smokers | 16.3% | 19.2% | 19.0% |
Montgomery, IL Compared With Nearby Cities
How Montgomery, IL compares with the 2 cities closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Montgomery, IL | 21,311 | $97,530 #2/3 | $195,717 #3/3 | 30.2 min #3/3 |
| Oswego, IL | 24,175 | $113,068 | $411,753 | 28.4 min |
| Aurora, IL | 168,587 | $92,311 | $252,075 | 23.2 min |
Frequently Asked Questions
Common questions about Montgomery, Illinois.
What is the population of Montgomery, Illinois?
About 21,311 people live in Montgomery, Illinois, in 7,428 households of 2.9 people on average. The median age is 38.2, close to the U.S. median of 37.3.
How densely populated is Montgomery, Illinois?
Averaged over its land area, Montgomery, Illinois has 2,089 people per square mile, a density typical of urban and suburban areas. That is about 24 times the U.S. average of 86.
Can a typical household afford a home in Montgomery, Illinois?
The median home costs 2.0 times the median household income ($195,717 against $97,530), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $1,664 a month takes about 20% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
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