Centralia, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Centralia, Illinois is 12,009 as of the 2023 American Community Survey, making it the 198th-largest city in Illinois. The median household income is $47,308, the median home value is $81,600, and the median age is 40.0.
The population has declined 9.5% since 2010 (13,021 → 11,787).
12,009
Population
1465
People / sq mi
$47,308
Median Income
$81,600
Median Home Value
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Centralia covers 8.2 sq mi of land at 1465 people per square mile.
About Centralia, IL
Housing cost is the defining feature of Centralia: the median home is valued at $81,600. With 12,009 residents, Centralia is a city in Illinois.
Money is tight relative to the rest of US cities: the median household earns just $47,308, below the US median of $78,538. The poverty rate is 14.6%, above the national 12.4%. Home prices sit near the bottom of the range at $81,600, with typical rent around $775.
College attainment is 17.8%, below the national 35.0%. Most workers commute: only 6.7% work from home, below the national 14.0%, and the average commute runs about 20 minutes each way.
Centralia city Population History (2010-2024)
The city of Centralia city had a population of 13,021 in 2010 and 11,787 in 2024, a -9.5% growth over 14 years. The peak was 13,021 in 2010. Average annual growth rate: -0.71%.
11,787
Population (2024)
13,021
Population (2010)
13,021
Peak (2010)
-0.71%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 13,021 |
| 2011 | 12,941 |
| 2012 | 12,854 |
| 2013 | 12,750 |
| 2014 | 12,676 |
| 2015 | 12,587 |
| 2016 | 12,476 |
| 2017 | 12,372 |
| 2018 | 12,272 |
| 2019 | 12,210 |
| 2020 | 12,144 |
| 2021 | 12,064 |
| 2022 | 11,919 |
| 2023 | 11,838 |
| 2024 | 11,787 |
Race & Ethnicity
| White | 82.3% |
| Black or African American | 9.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.5% |
| Two or More Races | 0.0% |
Economy & Income
$47,308
Median Household Income
$28,698
Per Capita Income
14.6%
Poverty Rate
5.8%
Unemployment Rate
Housing
$81,600
Median Home Value
$775
Median Rent
64.2%
Owner-Occupied
Education
89.0%
High School+
17.8%
Bachelor's+
Commute
0.2%
Drive Alone
79.2%
Public Transit
6.7%
Work From Home
19.5 min
Avg Commute
Community Profile
19.4%
Foreign Born
95.5%
Non-English at Home
8.0%
Veterans
21.3%
With Disability
93.6%
Health Insurance
89.0%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 29.3% |
| Manufacturing | 16.4% |
| Education, Health Care & Social Services | 8.8% |
| Retail Trade | 7.6% |
| Arts, Entertainment & Food Services | 5.7% |
| Public Administration | 5.1% |
| Information | 4.2% |
| Construction | 4.1% |
| Transportation & Warehousing | 4.0% |
| Finance, Insurance & Real Estate | 2.4% |
| Agriculture & Mining | 0.5% |
Largest cities in Illinois
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City rankings
Frequently Asked Questions
Centralia, Illinois has a population of 12,009 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 198th-largest city in Illinois.
The median household income in Centralia, Illinois is $47,308, with 14.6% of residents living below the federal poverty level.
The median home value in Centralia, Illinois is $81,600, with median monthly rent at $775 and a homeownership rate of 64.2%.
The median age in Centralia, Illinois is 40.0 years. The population is 48.3% male and 51.7% female.
The population has declined 9.5% since 2010 (13,021 → 11,787).
Centralia city, IL Climate
Centralia city, IL has an average annual temperature of 12.7°C (55°F) and receives about 1038 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12.7°C
Avg Temp
1038
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -2° / 28° | 51 mm |
| February | 1° / 33° | 63 mm |
| March | 7° / 44° | 103 mm |
| April | 13° / 55° | 100 mm |
| May | 18° / 65° | 110 mm |
| June | 23° / 74° | 98 mm |
| July | 26° / 78° | 100 mm |
| August | 24° / 76° | 75 mm |
| September | 21° / 69° | 79 mm |
| October | 14° / 57° | 77 mm |
| November | 7° / 45° | 95 mm |
| December | 1° / 34° | 87 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 Centralia city, IL
The most comfortable months to visit Centralia 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 -7°C low). May is usually the wettest month.
Where to stay near Centralia
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.