State
County
Land Area (mi²)
16.5 sq mi
Density (mi²)
1,050.60/sq mi
2020 Growth Rate
-0.47%
Growth Since 2010
0.95%
Rank in State
Rank in Country
Metro Population
133,904
World Population Review
Marion, Illinois Population 2021
17,356
Marion is a city located in Williamson County Illinois. It is also the county seat of Williamson County. With a 2020 population of 17,356, it is the 147th largest city in Illinois and the 2089th largest city in the United States . Marion is currently declining at a rate of -0.47% annually but its population has increased by 0.95% since the most recent census, which recorded a population of 17,193 in 2010. Marion reached it's highest population of 17,757 in 2013. Spanning over 17 miles, Marion has a population density of 1,051 people per square mile.
The average household income in Marion is $62,472 with a poverty rate of 18.53%. The median rental costs in recent years comes to $740 per month, and the median house value is $115,500. The median age in Marion is 39.3 years, 36.2 years for males, and 41.9 years for females.
Marion Demographics
According to the most recent ACS, the racial composition of Marion was:
- White: 85.29%
- Black or African American: 8.67%
- Two or more races: 4.36%
- Asian: 1.13%
- Other race: 0.40%
- Native Hawaiian or Pacific Islander: 0.12%
- Native American: 0.03%
The current population of Marion, Illinois is 17,356 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 17,602.The last official US Census in 2010 recorded the population at 17,193.
Marion, Illinois Population 2021
2019 and 2020 population is estimated by projecting the raw 2018 numbers.
| Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2021 | 133,904 | -930 | -0.69% |
| 2020 | 134,834 | -930 | -0.69% |
| 2019 | 135,764 | -930 | -0.69% |
| 2018 | 136,694 | -658 | -0.48% |
| 2017 | 137,352 | -1,282 | -0.93% |
| 2016 | 138,634 | -785 | -0.57% |
| 2015 | 139,419 | -239 | -0.17% |
| 2014 | 139,658 | -419 | -0.30% |
| 2013 | 140,077 | 1,379 | 0.98% |
| 2012 | 138,698 | -1,258 | -0.91% |
| 2011 | 139,956 | 547 | 0.39% |
| 2010 | 139,409 | 0.00% |
Marion Metro Area Population by Year
| Race | Population | Percentage |
|---|---|---|
| White | 15,007 | 85.29% |
| Black or African American | 1,525 | 8.67% |
| Two or More Races | 767 | 4.36% |
| Asian | 199 | 1.13% |
| Some Other Race | 70 | 0.40% |
| Native Hawaiian and Other Pacific Islander | 21 | 0.12% |
| American Indian and Alaska Native | 6 | 0.03% |
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Marion Population by Race
Marion Population Pyramid $2021
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Marion Population by Age
Marion Households and Families
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 7,479 | 2.29 | 54.8 |
| Non Family | 3,257 | 1.25 | 37.9 |
| Married | 2,911 | 2.93 | 82.3 |
| Female | 974 | 3.5 | 32.5 |
| Male | 337 | 3.31 | 44.5 |
2.98
Average Family Size
2.29
Average Household Size
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Marion Households by Type
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| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 287 | 2.31% |
| 9th to 12th Grade | 592 | 4.77% |
| High School Graduate | 3,934 | 31.67% |
| Some College | 3,616 | 29.11% |
| Associates Degree | 1,177 | 9.47% |
| Bachelors Degree | 1,509 | 12.15% |
| Graduate Degree | 1,308 | 10.53% |
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Marion Educational Attainment by Sex (over 25)
Marion Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 10,893 | 10,096 | 2,445 |
| Black | 1,074 | 1,022 | 255 |
| 2+ Races | 194 | 184 | 52 |
| Asian | 178 | 178 | 65 |
| Hispanic | 168 | 154 | 84 |
| Islander | 21 | 21 | |
| Other Race | 8 | 8 | |
| Native American | 6 |
The highest rate of high school graduation is among asian people with a rate of 100.00%.
The highest rate of bachelors degrees is among hispanic people with a rate of 50.00%.
Marion Educational Attainment by Race
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$33,738
Average Earnings
$42,586
Average Male
$28,198
Average Female
Marion Earnings by Educational Attainment
Marion Language by Age
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Marion Language
97.12% of Marion residents speak only English, while 2.88% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.58% of the population.
Marion Language
Marion Poverty by Race
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| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 14,330 | 2,265 | 15.81% |
| Black | 1,418 | 357 | 25.18% |
| Multiple | 761 | 351 | 46.12% |
| Hispanic | 399 | 159 | 39.85% |
| Asian | 199 | 26 | 13.07% |
| Islander | 21 | 21 | 100.00% |
18.53%
Overall Poverty Rate
16.67%
Male Poverty Rate
20.26%
Female Poverty Rate
Poverty in Marion
The race most likely to be in poverty in Marion is Islander, with 100.00% below the poverty level.
The race least likely to be in poverty in Marion is Asian, with 13.07% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 2.02%. Among those working part-time, it was 24.79%, and for those that did not work, the poverty rate was 22.52%.
Marion Poverty
Marion Poverty Rate by Education
Marion Marital Status
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Marriage Rates
44.2%
Overall Marriage Rate
46.6%
Male Marriage Rate
42.0%
Female Marriage Rate
Marion Married by Age and Sex
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Marion Marriage
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 35-44.
Marion Marital Status by Race
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Marion Marital Status
Marion Veterans by War
Marion Veterans by Age
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| Name | Veterans | % of Total |
|---|---|---|
| White | 1,372 | 11.55% |
| Black | 114 | 9.46% |
| 2+ Races | 27 | 10.98% |
| Hispanic | 11 | 4.93% |
Marion Veterans by Race
Marion Veterans by Education
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5.63%
Veteran Poverty Rate
35.30%
Veteran Disability Rate
Marion Veterans by Education
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53.9%
Labor Force Participation
50.7%
Employment Rate
5.5%
Unemployment Rate
Marion Employment by Age
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Marion Employment by Race
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Marion Employment by Education
Origin of Non-Citizens
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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Origin of Naturalized Citizens
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98.24%
Native Born
1.76%
Foreign Born
1.00%
Non Citizen
0.76%
Naturalized
Place of Birth
98.24% of Marion residents were born in the United States, with 76.16% having been born in Illinois. 1.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
Marion Place of Birth
| Year | Population | Growth | Annual Growth Rate |
|---|---|---|---|
| 2021 | 17,356 | -82 | -0.47% |
| 2020 | 17,438 | -82 | -0.47% |
| 2019 | 17,520 | -82 | -0.47% |
| 2018 | 17,602 | 14 | 0.08% |
| 2017 | 17,588 | -69 | -0.39% |
| 2016 | 17,657 | 44 | 0.25% |
| 2015 | 17,613 | -134 | -0.76% |
| 2014 | 17,747 | -10 | -0.06% |
| 2013 | 17,757 | 398 | 2.29% |
| 2012 | 17,359 | 14 | 0.08% |
| 2011 | 17,345 | 97 | 0.56% |
| 2010 | 17,248 | 1,213 | 0.73% |
| 2000 | 16,035 | 1,490 | 0.98% |
| 1990 | 14,545 | 514 | 0.36% |
| 1980 | 14,031 | 2,307 | 1.81% |
| 1970 | 11,724 | 450 | 0.39% |
| 1960 | 11,274 | 815 | 0.75% |
| 1950 | 10,459 | 1,208 | 1.23% |
| 1940 | 9,251 | 218 | 0.24% |
| 1930 | 9,033 | -549 | -0.59% |
| 1920 | 9,582 | 2,489 | 3.05% |
| 1910 | 7,093 | 4,583 | 10.95% |
| 1900 | 2,510 | 0.00% |