Marion, Illinois Population 2024

16,685

Marion is a city located in Williamson County Illinois. Marion has a 2024 population of 16,685. It is also the county seat of Williamson County.Marion is currently declining at a rate of -0.13% annually and its population has decreased by -0.91% since the most recent census, which recorded a population of 16,838 in 2020.

The average household income in Marion is $77,870 with a poverty rate of 15.03%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Marion is 40.8 years, 39.5 years for males, and 41.9 years for females.

Marion Demographics

According to the most recent ACS, the racial composition of Marion was:

  • White: 86%
  • Two or more races: 5.4%
  • Black or African American: 4.93%
  • Asian: 2.76%
  • Other race: 0.82%
  • Native American: 0.08%
  • Native Hawaiian or Pacific Islander:
Land Area (mi²)
16.5 sq mi
Density (mi²)
1,010.0/sq mi
Growth Since 2020
-0.91% (-153)
The current population of Marion, Illinois is 16,685 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 16,838.

Marion, Illinois Population 2024

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Marion Metro Area Population by Year

Population by Race

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Race
Population
Percentage (of total)
White14,50686%
Two or more races9115.4%
Black or African American8314.93%
Asian4662.76%
Other race1390.82%
Native American140.08%
Native Hawaiian or Pacific Islander
showing: 7 rows

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Marion Population by Race

Marion Population Pyramid 2024

Marion Median Age

40.8

Total

39.5

Male

41.9

Female

Marion Adults

There are 13,269 adults, (4,015 of whom are seniors) in Marion.

Marion Age Dependency

82.3

Age Dependency Ratio

43.4

Old Age Dependency Ratio

38.9

Child Dependency Ratio

Marion Sex Ratio

Female8,59450.95%
Male8,27349.05%

Marion Population by Age

Marion Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All8,0282.056238
Non Family3,8291.249.550.5
Married2,9282.7487.312.7
Female8193.0337.462.6
Male452348.951.1
showing: 5 rows

2.71

Average Family Size

2.05

Average Household Size

62.0%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Marion Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Marion Educational Attainment by Sex (over 25)

Marion Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among other race people with a rate of 100%.

The highest rate of bachelors degrees is among native american people with a rate of 64.29%.

Marion Educational Attainment by Race

All

Male

Female

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$46,099

Average Earnings

$47,029

Average Male

$40,302

Average Female

Marion Earnings by Educational Attainment

Marion Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Marion Language

96.34% of Marion residents speak only English, while 3.66% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 2.59% of the population.

Marion Language

Marion Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White13,9001,75612.63%
Multiple86933738.78%
Black79522328.05%
Hispanic48619940.95%
Asian4664910.52%
showing: 5 rows

15.03%

Overall Poverty Rate

14.14%

Male Poverty Rate

15.88%

Female Poverty Rate

Poverty in Marion

The race most likely to be in poverty in Marion is Hispanic, with 40.95% below the poverty level.

The race least likely to be in poverty in Marion is Asian, with 10.52% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.41%. Among those working part-time, it was 16.44%, and for those that did not work, the poverty rate was 23.42%.

Marion Poverty

rate

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Rate
Poverty
Less Than 9th Grade32.08%
High School20.85%
Some College10.48%
Bachelors or Greater2.76%
showing: 4 rows

Marion Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed54.1%
Female Unemployed35.87%
Female Employed7.68%
Male Employed4.75%
showing: 4 rows

Marion Poverty Rate by Employment Status and Sex

Marion Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Marion Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

43.7%

Overall Marriage Rate

44.4%

Male Marriage Rate

43.1%

Female Marriage Rate

Marion Married by Age and Sex

male

female

Marion Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Marion Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Marion Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,544

Number of Veterans

1,366

Male Veterans

178

Female Veterans

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Marion Veterans by War

count

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Marion Veterans by Age

count

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Marion Veterans by Race

Marion Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.65%

Veteran Poverty Rate

47.05%

Veteran Disability Rate

Marion Veterans by Education

LaborForceParticipation

57.8%

Labor Force Participation

55.1%

Employment Rate

4.6%

Unemployment Rate

Marion Employment by Age

LaborForceParticipation

Marion Employment by Race

LaborForceParticipation

Marion Employment by Education

Origin of Non-Citizens

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.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

76.71%

Born in Marion

97.78%

Native Born

2.22%

Foreign Born

1.29%

Non Citizen

0.92%

Naturalized

Place of Birth

97.78% of Marion residents were born in the United States, with 76.71% having been born in Illinois. 1.29% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Marion Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202916,575-22-0.13%
202816,597-22-0.13%
202716,619-22-0.13%
202616,641-22-0.13%
202516,663-22-0.13%
202416,685-22-0.13%
202316,707-22-0.13%
202216,729-22-0.13%
202116,751-87-0.52%
202016,838-672-3.84%
201917,510-82-0.47%
201817,592170.1%
201717,575-75-0.42%
201617,650490.28%
201517,601-134-0.76%
201417,735-9-0.05%
201317,7444002.31%
201217,344140.08%
201117,330990.57%
201017,2311,1967.46%
200016,0351,49010.24%
199014,5455143.66%
198014,0312,30719.68%
197011,7244503.99%
196011,2748157.79%
195010,4591,20813.06%
19409,2512182.41%
19309,033-549-5.73%
19209,5822,48935.09%
19107,0934,583182.59%
19002,510
showing: 31 rows

Marion Population by Year