Mattoon, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Mattoon, Illinois is 16,334 as of the 2023 American Community Survey, making it the 155th-largest city in Illinois. The median household income is $47,308, the median home value is $96,000, and the median age is 42.6.
The population has declined 10.5% since 2010 (18,551 → 16,602).
16,334
Population
1584
People / sq mi
$47,308
Median Income
$96,000
Median Home Value
Get Mattoon's next ACS population data
Subscribe for Population Review updates by email. No spam, unsubscribe anytime.
Mattoon covers 10.3 sq mi of land at 1584 people per square mile.
About Mattoon, IL
Housing cost is the defining feature of Mattoon: the median home is valued at $96,000. Mattoon is a city in Illinois with a population of 16,334.
Money is tight relative to the rest of US cities: the median household earns just $47,308, below the US median of $78,538. Roughly 13.9% of residents fall below the poverty line, above the national 12.4%. Real estate is inexpensive, with a typical home worth only $96,000, with typical rent around $764.
College attainment is 19.5%, below the national 35.0%. Home-based work is uncommon, at 3.6%, below the national 14.0%, and the average commute runs about 18 minutes each way.
Mattoon city Population History (2010-2024)
The city of Mattoon city had a population of 18,551 in 2010 and 16,602 in 2024, a -10.5% growth over 14 years. The peak was 18,551 in 2010. Average annual growth rate: -0.78%.
16,602
Population (2024)
18,551
Population (2010)
18,551
Peak (2010)
-0.78%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 18,551 |
| 2011 | 18,412 |
| 2012 | 18,338 |
| 2013 | 18,325 |
| 2014 | 18,192 |
| 2015 | 18,132 |
| 2016 | 18,043 |
| 2017 | 17,885 |
| 2018 | 17,689 |
| 2019 | 17,615 |
| 2020 | 16,853 |
| 2021 | 16,875 |
| 2022 | 16,692 |
| 2023 | 16,622 |
| 2024 | 16,602 |
Race & Ethnicity
| White | 91.0% |
| Black or African American | 2.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.3% |
| Two or More Races | 0.0% |
Economy & Income
$47,308
Median Household Income
$28,209
Per Capita Income
13.9%
Poverty Rate
5.1%
Unemployment Rate
Housing
$96,000
Median Home Value
$764
Median Rent
56.0%
Owner-Occupied
Education
89.6%
High School+
19.5%
Bachelor's+
Commute
0.0%
Drive Alone
79.2%
Public Transit
3.6%
Work From Home
18.2 min
Avg Commute
Community Profile
14.5%
Foreign Born
96.8%
Non-English at Home
7.5%
Veterans
19.8%
With Disability
92.2%
Health Insurance
93.1%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 21.0% |
| Manufacturing | 20.7% |
| Finance, Insurance & Real Estate | 8.4% |
| Arts, Entertainment & Food Services | 8.0% |
| Education, Health Care & Social Services | 7.4% |
| Retail Trade | 6.1% |
| Construction | 6.0% |
| Information | 5.5% |
| Transportation & Warehousing | 2.3% |
| Public Administration | 1.1% |
| Agriculture & Mining | 0.8% |
Largest cities in Illinois
Largest counties in Illinois
Part of Illinois
Metro areas in Illinois
City rankings
Frequently Asked Questions
Mattoon, Illinois has a population of 16,334 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 155th-largest city in Illinois.
The median household income in Mattoon, Illinois is $47,308, with 13.9% of residents living below the federal poverty level.
The median home value in Mattoon, Illinois is $96,000, with median monthly rent at $764 and a homeownership rate of 56.0%.
The median age in Mattoon, Illinois is 42.6 years. The population is 49.2% male and 50.8% female.
The population has declined 10.5% since 2010 (18,551 → 16,602).
Mattoon city, IL Climate
Mattoon city, IL has an average annual temperature of 11.5°C (53°F) and receives about 1029 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
11.5°C
Avg Temp
1029
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -4° / 26° | 53 mm |
| February | -1° / 30° | 54 mm |
| March | 5° / 42° | 86 mm |
| April | 12° / 53° | 100 mm |
| May | 18° / 64° | 104 mm |
| June | 23° / 73° | 102 mm |
| July | 24° / 76° | 110 mm |
| August | 23° / 74° | 88 mm |
| September | 20° / 67° | 81 mm |
| October | 13° / 56° | 77 mm |
| November | 6° / 43° | 94 mm |
| December | 0° / 32° | 80 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 Mattoon city, IL
The most comfortable months to visit Mattoon city, IL are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -8°C low). July is usually the wettest month.
Where to stay near Mattoon
Visiting or relocating to Mattoon, IL? Compare hotels and short-term rentals across the metro — live availability and prices.
Top-rated places to stay near Mattoon
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a move to Mattoon?
Get relocation and cost-of-living insights for Mattoon, IL by email. No spam, unsubscribe anytime.
More from Illinois
Population 2,707,648
Population 179,867
Population 149,785
Population 149,424
Population 147,649
Full rankings of Illinois cities by population
Statewide data for Illinois
Population, race, income, age, and trends across Illinois
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.