United States › Illinois › Montgomery CITY
Montgomery Illinois · 21,978 residents (2025 est.) · 9.61 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2010 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2020 ACS 2021 ACS 2022 ACS 2023 ACS
The short version
Montgomery is home to 21,515 people in Illinois. The population has more than tripled since 2000, adding 16,044 people. Few US cities rank higher on income. 79% of homes are owner-occupied. This skews young, with a median age of 35.3. There are 2,240 people per square mile.
At a glance
Wealthier
above the US median
US median: $82,259
Younger
median age 35.3
US median: 38.9
Less educated
29% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01
Population & growth from 5,471 in 2000
21,978 in 2025 (Census Bureau estimate)
2,240 / sq mi
+21%since 2009
from 1,845 / sq mi in 2009
US average: 281
from 37.2 in 2000
US average: 38.9
Population, 1990 – 2024
3K 8K 13K 18K 23K 1990 2000 2010 2020 2024 Montgomery Age distribution, 2024
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $103,734
+12%inflation adjusted, since 2000
from $51,028 in 2000
US average: $82,259
from $23,395 in 2000
US average: $44,673
Households earning $100K+
from 39.4% in 2009
US average: 53.3%
from 3.7% in 2000
US average: 12.5%
from 0.322 in 2010
US average: 0.476
Workforce by industry, 2024
Professional, scientific, technical 8.7%
Public administration 5.8%
Transportation & warehousing 3.4%
Arts, entertainment, food 0.7%
Education & health services 0.4%
Agriculture, forestry, fishing 0.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
$299,500
+24%inflation adjusted, since 2000
from $133,100 in 2000
US average: $376,019
$1,984
+65%inflation adjusted, since 2000
from $659 in 2000
US average: $1,442
from 75.4% in 2000
20.7% rent
from 4.1% in 2009
US average: 10.0%
3.01 people
+16%since 2009
from 2.60 people in 2009
US average: 2.54
from 41.7% in 2009
US average: 22.9%
from 60.2% in 2009
US average: 47.4%
from 3.0 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity 2000
White, non-Hispanic 81.4%(4,452)
Hispanic / Latino 13.5%(741)
2024
White, non-Hispanic 53.8%(11,580)
Hispanic / Latino 32.1%(6,896)
from 58 in 2009
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 18 more ancestry groups with data from 19.6% in 2000
US average: 35.6%
High school or higher
from 82.2% in 2000
US average: 89.6%
from 5.0% in 2000
US average: 14.0%
Section 06
Commute & transportation from 19.6 min in 2000
US average: 26.5
from 89.8% in 2009
US average: 68.9%
from 4.7% in 2009
US average: 8.5%
from 2.2% in 2009
US average: 3.2%
from 2.2% in 2009
US average: 15.0%
from 0.0% in 2009
US average: 2.4%
from 0.8% in 2009
US average: 0.4%
from 5.0% in 2009
US average: 8.3%
Section 07
Work & employment from 7.1% in 2011
US average: 5.2%
from 75.4% in 2011
US average: 63.5%
Women 20-64 in the labor force
from 80.9% in 2020
US average: 74.6%
from 9.0% in 2009
US average: 13.1%
from 28.8% in 2009
US average: 42.5%
Section 08
People & community from 10.3% in 2009
US average: 14.1%
from 7.6% in 2009
US average: 6.2%
from 6.5% in 2012
US average: 13.3%
from 6.5% in 2013
US average: 8.4%
from 94.0% in 2017
US average: 91.0%
Computer in household
from 97.4% in 2020
US average: 95.5%
from 91.7% in 2020
US average: 87.7%
from 74.8% in 2016
US average: 77.7%
from 19.8% in 2016
US average: 13.6%
Marital status
Men 15+
Never married 39.4%(3,393)
Women 15+
Never married 29.2%(2,356)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 6.5% in 2013
US average: 8.4%
from 78.8% in 2020
US average: 54.8%
Direct-purchase
from 9.9% in 2020
US average: 13.8%
from 6.2% in 2020
US average: 18.4%
from 12.4% in 2020
US average: 20.9%
VA health care
from 0.6% in 2020
US average: 2.2%
Any private
from 84.9% in 2020
US average: 67.1%
Any public
from 18.5% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 27%(167)
Gulf War (1990s) 25.4%(157)
Share of the 619 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper
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Frequently asked
How many people live in Montgomery, Illinois? Montgomery, Illinois has about 21,515 residents according to the 2024 American Community Survey.
What is the median household income in Montgomery, Illinois? The typical household in Montgomery, Illinois earns about $103,734 a year. Half of households make more than that, and half make less.
Is Montgomery, Illinois expensive? In Montgomery, Illinois, the median home is worth about $299,500, and the typical rent is about $1,984 a month.
How educated are people in Montgomery, Illinois? About 28.7% of adults age 25 and over in Montgomery, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Montgomery, Illinois? About 6.7% of people in Montgomery, Illinois live below the federal poverty line.
Has Montgomery, Illinois grown since 1990? Yes, Montgomery, Illinois has grown since 1990. The population has added about 17,140 residents, a change of about 392 percent over that period.
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