Marengo, Illinois Population 2024

7,533

Marengo is a city located in McHenry County Illinois. Marengo has a 2024 population of 7,533. Marengo is currently declining at a rate of -0.21% annually and its population has decreased by -0.26% since the most recent census, which recorded a population of 7,553 in 2020.

The average household income in Marengo is $87,595 with a poverty rate of 15.74%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Marengo is 31.1 years, 31.1 years for males, and 31.1 years for females.

Marengo Demographics

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

  • White: 95.33%
  • Two or more races: 2.76%
  • Other race: 0.99%
  • Black or African American: 0.92%
  • Native American:
  • Asian:
  • Native Hawaiian or Pacific Islander:
Land Area (mi²)
7.9 sq mi
Density (mi²)
954.50/sq mi
Growth Since 2020
-0.26% (-20)
The current population of Marengo, Illinois is 7,533 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 7,553.

Marengo, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White7,12295.33%
Two or more races2062.76%
Other race740.99%
Black or African American690.92%
Native American
Asian
Native Hawaiian or Pacific Islander
showing: 7 rows

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Marengo Population by Race

Marengo Population Pyramid 2024

Marengo Median Age

31.1

Total

31.1

Male

31.1

Female

Marengo Adults

There are 5,629 adults, (1,044 of whom are seniors) in Marengo.

Marengo Age Dependency

62.9

Age Dependency Ratio

22.8

Old Age Dependency Ratio

40.2

Child Dependency Ratio

Marengo Sex Ratio

Female3,68549.32%
Male3,78650.68%

Marengo Population by Age

Marengo Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All2,9182.5463.236.8
Married1,2863.4681.618.4
Non Family1,0241.0863.936.1
Female4442.9523.476.6
Male1643.32278
showing: 5 rows

3.15

Average Family Size

2.54

Average Household Size

63.2%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Marengo 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

Marengo Educational Attainment by Sex (over 25)

Marengo 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 other race people with a rate of 36.59%.

Marengo Educational Attainment by Race

All

Male

Female

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$49,950

Average Earnings

$67,118

Average Male

$32,356

Average Female

Marengo Earnings by Educational Attainment

Marengo Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Marengo Language

86.41% of Marengo residents speak only English, while 13.59% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 10.96% of the population.

Marengo Language

Marengo Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White6,11095315.6%
Hispanic1,17918215.44%
Multiple2065024.27%
Black652132.31%
showing: 4 rows

15.74%

Overall Poverty Rate

10.05%

Male Poverty Rate

21.65%

Female Poverty Rate

Poverty in Marengo

The race most likely to be in poverty in Marengo is Black, with 32.31% below the poverty level.

The race least likely to be in poverty in Marengo is Hispanic, with 15.44% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 5.1%. Among those working part-time, it was 17.44%, and for those that did not work, the poverty rate was 24.16%.

Marengo Poverty

rate

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Rate
Poverty
Less Than 9th Grade33.1%
Some College16.24%
High School10.73%
Bachelors or Greater3.2%
showing: 4 rows

Marengo Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed76.92%
Male Unemployed28.63%
Female Employed10.9%
Male Employed4.51%
showing: 4 rows

Marengo Poverty Rate by Employment Status and Sex

Marengo Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Marengo Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

45.9%

Overall Marriage Rate

46.9%

Male Marriage Rate

44.9%

Female Marriage Rate

Marengo Married by Age and Sex

male

female

Marengo Marriage

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

Marengo Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Marengo Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

379

Number of Veterans

379

Male Veterans

Female Veterans

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Marengo Veterans by War

count

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Marengo Veterans by Age

count

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Marengo Veterans by Race

Marengo Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

Veteran Poverty Rate

38.26%

Veteran Disability Rate

Marengo Veterans by Education

LaborForceParticipation

68.4%

Labor Force Participation

63.3%

Employment Rate

7.1%

Unemployment Rate

Marengo Employment by Age

LaborForceParticipation

Marengo Employment by Race

LaborForceParticipation

Marengo 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

77.91%

Born in Marengo

91.62%

Native Born

8.38%

Foreign Born

3.08%

Non Citizen

5.3%

Naturalized

Place of Birth

91.62% of Marengo residents were born in the United States, with 77.91% having been born in Illinois. 3.08% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Marengo Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20297,453-16-0.21%
20287,469-16-0.21%
20277,485-16-0.21%
20267,501-16-0.21%
20257,517-16-0.21%
20247,533-16-0.21%
20237,549-16-0.21%
20227,565-16-0.21%
20217,581280.37%
20207,5531181.59%
20197,435-34-0.46%
20187,46910.01%
20177,468-10-0.13%
20167,478-38-0.51%
20157,516-26-0.34%
20147,542-28-0.37%
20137,570-47-0.62%
20127,617-26-0.34%
20117,643-29-0.38%
20107,6721,31720.72%
20006,3551,58733.28%
19904,7684079.33%
19804,3611262.98%
19704,23566718.69%
19603,56884230.89%
19502,726
showing: 26 rows

Marengo Population by Year