Troy, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Troy, Illinois is 10,889 as of the 2023 American Community Survey, making it the 211th-largest city in Illinois. The median household income is $97,825, the median home value is $240,800, and the median age is 35.8.
The population has grown 18.5% since 2010 (9,964 → 11,810).
10,889
Population
1746
People / sq mi
$97,825
Median Income
$240,800
Median Home Value
Troy covers 6.2 sq mi of land at 1746 people per square mile.
About Troy, IL
Troy is a city in Illinois with a population of 10,889. It ranks #211 among cities in Illinois by population. The median age is 35.8, younger than the national median. The population is 46.2% male and 53.8% female.
The median household income in Troy is $97,825, above the US median of $74,580. 1.5% of residents live below the federal poverty level. Home values sit at a median of $240,800, with monthly rent averaging $1,060. The homeownership rate of 67.5% is higher than the national rate of 64.8%.
Educational attainment in Troy reflects 45.5% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 8.5% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 24.9 minutes each way.
Troy city Population History (2010-2024)
The city of Troy city had a population of 9,964 in 2010 and 11,810 in 2024, a 18.5% growth over 14 years. The peak was 11,810 in 2024. Average annual growth rate: 1.25%.
11,810
Population (2024)
9,964
Population (2010)
11,810
Peak (2024)
1.25%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 9,964 |
| 2011 | 10,000 |
| 2012 | 10,005 |
| 2013 | 10,044 |
| 2014 | 10,053 |
| 2015 | 10,083 |
| 2016 | 10,142 |
| 2017 | 10,232 |
| 2018 | 10,296 |
| 2019 | 10,375 |
| 2020 | 11,454 |
| 2021 | 11,543 |
| 2022 | 11,647 |
| 2023 | 11,721 |
| 2024 | 11,810 |
Race & Ethnicity
| White | 91.3% |
| Black or African American | 1.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.6% |
| Two or More Races | 0.0% |
Economy & Income
$97,825
Median Household Income
$44,948
Per Capita Income
1.5%
Poverty Rate
1.7%
Unemployment Rate
Housing
$240,800
Median Home Value
$1,060
Median Rent
67.5%
Owner-Occupied
Education
97.4%
High School+
45.5%
Bachelor's+
Commute
0.4%
Drive Alone
84.6%
Public Transit
8.5%
Work From Home
24.9 min
Avg Commute
Community Profile
28.3%
Foreign Born
96.3%
Non-English at Home
12.4%
Veterans
11.5%
With Disability
96.5%
Health Insurance
96.9%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 28.0% |
| Finance, Insurance & Real Estate | 11.1% |
| Manufacturing | 10.3% |
| Public Administration | 9.6% |
| Information | 7.1% |
| Retail Trade | 6.5% |
| Construction | 6.0% |
| Education, Health Care & Social Services | 5.1% |
| Arts, Entertainment & Food Services | 3.0% |
| Agriculture & Mining | 1.5% |
| Transportation & Warehousing | 1.2% |
Largest cities in Illinois
Largest counties in Illinois
Part of Illinois
Metro areas in Illinois
City rankings
Frequently Asked Questions
Troy, Illinois has a population of 10,889 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 211th-largest city in Illinois.
The median household income in Troy, Illinois is $97,825, with 1.5% of residents living below the federal poverty level.
The median home value in Troy, Illinois is $240,800, with median monthly rent at $1,060 and a homeownership rate of 67.5%.
The median age in Troy, Illinois is 35.8 years. The population is 46.2% male and 53.8% female.
The population has grown 18.5% since 2010 (9,964 → 11,810).
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.