Marion County, Illinois's estimated 2024 population is 36,441 with a growth rate of -0.63% in the past year according to the most recent United States census data. Marion County, Illinois is the 37th largest county in Illinois. The 2010 population was 39,416 and has seen a growth of -7.55% since that time.
Year | Population | Growth | Change |
|---|---|---|---|
| 2029 | 35,281 | -232 | -0.65% |
| 2028 | 35,513 | -232 | -0.65% |
| 2027 | 35,745 | -232 | -0.64% |
| 2026 | 35,977 | -232 | -0.64% |
| 2025 | 36,209 | -232 | -0.64% |
| 2024 | 36,441 | -232 | -0.63% |
| 2023 | 36,673 | -232 | -0.63% |
| 2022 | 36,905 | -474 | -1.27% |
| 2021 | 37,379 | -273 | -0.73% |
| 2020 | 37,652 | 343 | 0.92% |
| 2019 | 37,309 | -144 | -0.38% |
| 2018 | 37,453 | -304 | -0.81% |
| 2017 | 37,757 | -300 | -0.79% |
| 2016 | 38,057 | -324 | -0.84% |
| 2015 | 38,381 | -192 | -0.5% |
| 2014 | 38,573 | -112 | -0.29% |
| 2013 | 38,685 | -333 | -0.85% |
| 2012 | 39,018 | -129 | -0.33% |
| 2011 | 39,147 | -269 | -0.68% |
| 2010 | 39,416 | 0 | 0% |
| 1990 | 41,561 | -1,962 | -4.51% |
| 1980 | 43,523 | 4,537 | 11.64% |
| 1970 | 38,986 | -363 | -0.92% |
| 1960 | 39,349 | -2,351 | -5.64% |
| 1950 | 41,700 | -6,289 | -13.11% |
| 1940 | 47,989 | 12,354 | 34.67% |
| 1930 | 35,635 | -1,862 | -4.97% |
| 1920 | 37,497 | 2,403 | 6.85% |
| 1910 | 35,094 | 4,648 | 15.27% |
| 1900 | 30,446 | 6,105 | 25.08% |
| 1890 | 24,341 | 655 | 2.77% |
| 1880 | 23,686 | 3,064 | 14.86% |
| 1870 | 20,622 | 7,883 | 61.88% |
| 1860 | 12,739 | 6,019 | 89.57% |
| 1850 | 6,720 | 1,978 | 41.71% |
| 1840 | 4,742 | 2,617 | 123.15% |
| 1830 | 2,125 | -33,156 | -93.98% |
White
Black or African American
Two or more races
Asian
Other race
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 15,236 | 2.41 | 73.8 | 26.2 |
| Married | 6,812 | 3.02 | 88.2 | 11.8 |
| Non Family | 5,908 | 1.21 | 64.7 | 35.3 |
| Female | 1,885 | 3.58 | 51.9 | 48.1 |
| Male | 631 | 3.56 | 68.8 | 31.2 |
3.03
Average Family Size
2.41
Average Household Size
73.8%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among native american people with a rate of 100%.
The highest rate of bachelors degrees is among islander people with a rate of 100%.
All
Male
Female
$40,867
Average Earnings
$47,246
Average Male
$33,678
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
97.98% of Marion County, Illinois residents speak only English, while 2.02% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.18% of the population.
rate
16.96%
Overall Poverty Rate
13.82%
Male Poverty Rate
20.02%
Female Poverty Rate
The race most likely to be in poverty in Marion County, Illinois is Black, with 33.58% below the poverty level.
The race least likely to be in poverty in Marion County, Illinois is White, with 15.76% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 2.74%. Among those working part-time, it was 24.25%, and for those that did not work, the poverty rate was 22.25%.
Married
Widowed
Divorced
Separated
NeverMarried
47.3%
Overall Marriage Rate
48.9%
Male Marriage Rate
45.8%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
4.45%
Veteran Poverty Rate
33.5%
Veteran Disability Rate
LaborForceParticipation
60.3%
Labor Force Participation
55.3%
Employment Rate
8.1%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
80.73%
Born in Marion County, Illinois
98.67%
Native Born
1.33%
Foreign Born
0.67%
Non Citizen
0.66%
Naturalized
98.67% of Marion County, Illinois residents were born in the United States, with 80.73% having been born in Illinois. 0.67% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.