Montgomery, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Montgomery, Illinois is 21,205 as of the 2023 American Community Survey, making it the 113th-largest city in Illinois. The median household income is $96,985, the median home value is $270,700, and the median age is 35.1.
The population has grown 19.4% since 2010 (18,384 → 21,957).
21,205
Population
2119
People / sq mi
$96,985
Median Income
$270,700
Median Home Value
Montgomery covers 10.0 sq mi of land at 2119 people per square mile.
About Montgomery, IL
Montgomery is a city in Illinois with a population of 21,205. It ranks #113 among cities in Illinois by population. The median age is 35.1, younger than the national median. The population is 54.7% male and 45.3% female.
The median household income in Montgomery is $96,985, above the US median of $74,580. 7.9% of residents live below the federal poverty level. Home values sit at a median of $270,700, with monthly rent averaging $1,897. The homeownership rate of 78.2% is higher than the national rate of 64.8%.
Educational attainment in Montgomery reflects 29.0% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 10.2% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 33.2 minutes each way.
Montgomery village Population History (2010-2024)
The city of Montgomery village had a population of 18,384 in 2010 and 21,957 in 2024, a 19.4% growth over 14 years. The peak was 21,985 in 2023. Average annual growth rate: 1.29%.
21,957
Population (2024)
18,384
Population (2010)
21,985
Peak (2023)
1.29%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 18,384 |
| 2011 | 18,681 |
| 2012 | 18,910 |
| 2013 | 19,114 |
| 2014 | 19,275 |
| 2015 | 19,437 |
| 2016 | 19,605 |
| 2017 | 19,676 |
| 2018 | 19,725 |
| 2019 | 19,638 |
| 2020 | 20,440 |
| 2021 | 21,351 |
| 2022 | 21,866 |
| 2023 | 21,985 |
| 2024 | 21,957 |
Race & Ethnicity
| White | 60.9% |
| Black or African American | 7.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.0% |
Economy & Income
$96,985
Median Household Income
$36,453
Per Capita Income
7.9%
Poverty Rate
2.6%
Unemployment Rate
Housing
$270,700
Median Home Value
$1,897
Median Rent
78.2%
Owner-Occupied
Education
90.8%
High School+
29.0%
Bachelor's+
Commute
0.7%
Drive Alone
84.3%
Public Transit
10.2%
Work From Home
33.2 min
Avg Commute
Community Profile
12.7%
Foreign Born
72.0%
Non-English at Home
3.8%
Veterans
7.3%
With Disability
97.7%
Health Insurance
98.7%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 21.4% |
| Finance, Insurance & Real Estate | 12.9% |
| Manufacturing | 11.1% |
| Education, Health Care & Social Services | 9.1% |
| Retail Trade | 8.3% |
| Information | 6.6% |
| Public Administration | 5.5% |
| Construction | 5.4% |
| Arts, Entertainment & Food Services | 2.8% |
| Transportation & Warehousing | 0.3% |
Largest cities in Illinois
Largest counties in Illinois
Part of Illinois
Metro areas in Illinois
City rankings
Frequently Asked Questions
Montgomery, Illinois has a population of 21,205 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 113th-largest city in Illinois.
The median household income in Montgomery, Illinois is $96,985, with 7.9% of residents living below the federal poverty level.
The median home value in Montgomery, Illinois is $270,700, with median monthly rent at $1,897 and a homeownership rate of 78.2%.
The median age in Montgomery, Illinois is 35.1 years. The population is 54.7% male and 45.3% female.
The population has grown 19.4% since 2010 (18,384 → 21,957).
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.