United States › Illinois › Montgomery County COUNTY
Montgomery County Illinois · 28,076 residents (2025 est.) · 704 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
With 27,942 people, Montgomery County is a county in Illinois. 18% of adults hold a bachelor's degree, below the 36% national rate. Home values have more than doubled since 2000, reaching $112,300. 1% of residents were born outside the United States. Owners hold 77% of the housing stock. At a median age of 42.8, this is an older place than the country as a whole.
At a glance
Lower income
below the US median
US median: $82,259
Older
median age 42.8
US median: 38.9
Less educated
18% 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 30,652 in 2000
28,076 in 2025 (Census Bureau estimate)
from 42 / sq mi in 2009
US average: 281
from 38.1 in 2000
US average: 38.9
Population, 1990 – 2024
28K 28K 29K 30K 31K 1990 2000 2010 2020 2024 Montgomery County Age distribution, 2024
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Section 02
Income & economy $63,620
+5%inflation adjusted, since 2000
from $33,123 in 2000
US average: $82,259
from $16,272 in 2000
US average: $44,673
Households earning $100K+
from 22.5% in 2009
US average: 53.3%
from 13.4% in 2000
US average: 12.5%
from 0.444 in 2010
US average: 0.476
Workforce by industry, 2024
Agriculture, forestry, fishing 6.8%
Public administration 5.9%
Professional, scientific, technical 5.4%
Transportation & warehousing 2.9%
Education & health services 1%
Arts, entertainment, food 0.7%
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$112,300
+11%inflation adjusted, since 2000
from $55,300 in 2000
US average: $376,019
$723
+2%inflation adjusted, since 2000
from $388 in 2000
US average: $1,442
from 78.4% in 2000
22.6% rent
from 9.6% in 2009
US average: 10.0%
from 2.34 people in 2009
US average: 2.54
from 19.5% in 2009
US average: 22.9%
from 37.2% in 2009
US average: 47.4%
from 1.9 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 94.4%(28,928)
Hispanic / Latino 1.1%(326)
2024
White, non-Hispanic 91.7%(25,625)
Hispanic / Latino 2.2%(609)
from 15 in 2009
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
from 46 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 22 more ancestry groups with data from 11.2% in 2000
US average: 35.6%
High school or higher
from 77.1% in 2000
US average: 89.6%
from 3.6% in 2000
US average: 14.0%
Section 06
Commute & transportation from 19.5 min in 2000
US average: 26.5
from 81.5% in 2009
US average: 68.9%
from 9.1% in 2009
US average: 8.5%
from 0.3% in 2009
US average: 3.2%
from 5.9% in 2009
US average: 15.0%
from 2.2% in 2009
US average: 2.4%
from 0.1% in 2009
US average: 0.4%
from 5.1% in 2009
US average: 8.3%
Section 07
Work & employment from 7.4% in 2011
US average: 5.2%
from 52.7% in 2011
US average: 63.5%
Women 20-64 in the labor force
from 74.7% in 2020
US average: 74.6%
from 11.7% in 2009
US average: 13.1%
from 28.2% in 2009
US average: 42.5%
Section 08
People & community from 1.4% in 2009
US average: 14.1%
from 13.0% in 2009
US average: 6.2%
from 13.6% in 2012
US average: 13.3%
from 8.4% in 2013
US average: 8.4%
from 69.2% in 2017
US average: 91.0%
Computer in household
from 84.5% in 2020
US average: 95.5%
from 86.1% in 2020
US average: 87.7%
from 97.8% in 2016
US average: 77.7%
from 1.3% in 2016
US average: 13.6%
Marital status
Men 15+
Never married 34.5%(4,303)
Women 15+
Never married 21.6%(2,350)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 8.4% in 2013
US average: 8.4%
from 58.9% in 2020
US average: 54.8%
Direct-purchase
from 17.8% in 2020
US average: 13.8%
from 23.6% in 2020
US average: 18.4%
from 18.8% in 2020
US average: 20.9%
VA health care
from 1.7% in 2020
US average: 2.2%
Any private
from 74.3% in 2020
US average: 67.1%
Any public
from 39.7% 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) 16.1%(308)
Gulf War (1990s) 27.3%(524)
Share of the 1,917 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.
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Drill deeper
Places similar to Montgomery County Head to head
Compare Montgomery County to nearby counties MONTGOMERY COUNTY VS
Bond County
Income $65,959 +4%
Home value $145,700 +30%
Population 16,959 −40%
SEE FULL COMPARISON →
MONTGOMERY COUNTY VS
Macoupin County
Income $70,805 +11%
Home value $138,200 +23%
Population 43,748 +56%
SEE FULL COMPARISON →
MONTGOMERY COUNTY VS
Christian County
Income $62,611 −2%
Home value $115,500 +3%
Population 33,443 +19%
SEE FULL COMPARISON →
MONTGOMERY COUNTY VS
Fayette County
Income $60,944 −4%
Home value $130,700 +16%
Population 20,790 −26%
SEE FULL COMPARISON →
Frequently asked
How many people live in Montgomery County, Illinois? Montgomery County, Illinois has about 27,942 residents according to the 2024 American Community Survey.
What is the median household income in Montgomery County, Illinois? The typical household in Montgomery County, Illinois earns about $63,620 a year. Half of households make more than that, and half make less.
Is Montgomery County, Illinois expensive? In Montgomery County, Illinois, the median home is worth about $112,300, and the typical rent is about $723 a month.
How educated are people in Montgomery County, Illinois? About 18.3% of adults age 25 and over in Montgomery County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Montgomery County, Illinois? About 12.6% of people in Montgomery County, Illinois live below the federal poverty line.
Has Montgomery County, Illinois grown since 1990? Yes, Montgomery County, Illinois has shrunk since 1990. The population has lost about 2,786 residents, a change of about -9 percent over that period.
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