Mount Vernon, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Mount Vernon, Illinois is 14,492 as of the 2023 American Community Survey, making it the 170th-largest city in Illinois. The median household income is $52,751, the median home value is $89,700, and the median age is 39.0.
The population has declined 6.9% since 2010 (15,206 → 14,162).
14,492
Population
989
People / sq mi
$52,751
Median Income
$89,700
Median Home Value
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Mount Vernon covers 14.7 sq mi of land at 989 people per square mile.
About Mount Vernon, IL
Housing cost is the defining feature of Mount Vernon: the median home is valued at $89,700. Mount Vernon is a city in Illinois with a population of 14,492.
Incomes run on the lower side: a median household income of $52,751, below the US median of $78,538. Poverty sits at 15.5%, above the national 12.4%. Home prices sit near the bottom of the range at $89,700, with typical rent around $893.
College attainment is 19.0%, below the national 35.0%. Home-based work is uncommon, at 3.3%, below the national 14.0%, and the average commute runs about 14 minutes each way.
Mount Vernon city Population History (2010-2024)
The city of Mount Vernon city had a population of 15,206 in 2010 and 14,162 in 2024, a -6.9% growth over 14 years. The peak was 15,206 in 2010. Average annual growth rate: -0.51%.
14,162
Population (2024)
15,206
Population (2010)
15,206
Peak (2010)
-0.51%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 15,206 |
| 2011 | 15,173 |
| 2012 | 15,124 |
| 2013 | 15,109 |
| 2014 | 15,009 |
| 2015 | 14,948 |
| 2016 | 14,941 |
| 2017 | 14,861 |
| 2018 | 14,751 |
| 2019 | 14,723 |
| 2020 | 14,570 |
| 2021 | 14,510 |
| 2022 | 14,306 |
| 2023 | 14,262 |
| 2024 | 14,162 |
Race & Ethnicity
| White | 76.4% |
| Black or African American | 12.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.4% |
| Two or More Races | 0.0% |
Economy & Income
$52,751
Median Household Income
$29,722
Per Capita Income
15.5%
Poverty Rate
5.1%
Unemployment Rate
Housing
$89,700
Median Home Value
$893
Median Rent
53.4%
Owner-Occupied
Education
93.5%
High School+
19.0%
Bachelor's+
Commute
0.4%
Drive Alone
79.5%
Public Transit
3.3%
Work From Home
13.7 min
Avg Commute
Community Profile
20.9%
Foreign Born
97.1%
Non-English at Home
9.1%
Veterans
19.5%
With Disability
93.9%
Health Insurance
93.2%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 26.1% |
| Manufacturing | 15.1% |
| Education, Health Care & Social Services | 12.7% |
| Finance, Insurance & Real Estate | 8.1% |
| Retail Trade | 6.8% |
| Construction | 4.6% |
| Arts, Entertainment & Food Services | 4.5% |
| Information | 4.5% |
| Public Administration | 2.2% |
| Agriculture & Mining | 1.1% |
| Transportation & Warehousing | 0.9% |
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Frequently Asked Questions
Mount Vernon, Illinois has a population of 14,492 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 170th-largest city in Illinois.
The median household income in Mount Vernon, Illinois is $52,751, with 15.5% of residents living below the federal poverty level.
The median home value in Mount Vernon, Illinois is $89,700, with median monthly rent at $893 and a homeownership rate of 53.4%.
The median age in Mount Vernon, Illinois is 39.0 years. The population is 50.4% male and 49.6% female.
The population has declined 6.9% since 2010 (15,206 → 14,162).
Mount Vernon city, IL Climate
Mount Vernon city, IL has an average annual temperature of 12.9°C (55°F) and receives about 1063 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12.9°C
Avg Temp
1063
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -2° / 29° | 59 mm |
| February | 1° / 34° | 67 mm |
| March | 7° / 45° | 106 mm |
| April | 13° / 55° | 105 mm |
| May | 18° / 65° | 113 mm |
| June | 23° / 74° | 96 mm |
| July | 26° / 78° | 92 mm |
| August | 24° / 76° | 80 mm |
| September | 21° / 69° | 79 mm |
| October | 14° / 57° | 77 mm |
| November | 7° / 45° | 103 mm |
| December | 2° / 35° | 86 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Mount Vernon city, IL
The most comfortable months to visit Mount Vernon city, IL are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near -6°C low). May is usually the wettest month.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.