Millbrook, Illinois Population 2024

281

Millbrook is a city located in Kendall County Illinois. Millbrook has a 2024 population of 281. Millbrook is currently growing at a rate of 0.72% annually and its population has increased by 2.18% since the most recent census, which recorded a population of 275 in 2020.

The average household income in Millbrook is $120,990 with a poverty rate of 7.01%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Millbrook is 38.1 years, 38.1 years for males, and 38.1 years for females.

Millbrook Demographics

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

  • White: 99.04%
  • Two or more races: 0.96%
  • Black or African American: 0%
  • Native American: 0%
  • Asian: 0%
  • Native Hawaiian or Pacific Islander: 0%
  • Other race: 0%
Land Area (mi²)
1.8 sq mi
Density (mi²)
152.20/sq mi
Growth Since 2020
2.18% (6)
The current population of Millbrook, Illinois is 281 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 275.

Millbrook, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White31199.04%
Two or more races30.96%
Black or African American00%
Native American00%
Asian00%
Native Hawaiian or Pacific Islander00%
Other race00%

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Millbrook Population by Race

Millbrook Population Pyramid 2024

Millbrook Median Age

38.1

Total

38.1

Male

38.1

Female

Millbrook Adults

There are 217 adults, (34 of whom are seniors) in Millbrook.

Millbrook Age Dependency

71.6

Age Dependency Ratio

18.6

Old Age Dependency Ratio

53

Child Dependency Ratio

Millbrook Sex Ratio

Female17154.46%
Male14345.54%

Millbrook Population by Age

Millbrook Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All1062.9695.34.7
Married783.2198.71.3
Non Family191.1178.921.1
Male75.431000
Female22.51000

3.23

Average Family Size

2.96

Average Household Size

95.3%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Millbrook 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

Millbrook Educational Attainment by Sex (over 25)

Millbrook Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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

The highest rate of bachelors degrees is among white people with a rate of 35.18%.

Millbrook Educational Attainment by Race

All

Male

Female

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$59,375

Average Earnings

$86,875

Average Male

$43,750

Average Female

Millbrook Earnings by Educational Attainment

Millbrook Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Millbrook Language

98.62% of Millbrook residents speak only English, while 1.38% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.38% of the population.

Millbrook Language

Millbrook Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White309216.8%
Multiple3133.33%

7.01%

Overall Poverty Rate

6.29%

Male Poverty Rate

7.6%

Female Poverty Rate

Poverty in Millbrook

The race most likely to be in poverty in Millbrook is Multiple, with 33.33% below the poverty level.

The race least likely to be in poverty in Millbrook is White, with 6.8% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0%. Among those working part-time, it was 1.61%, and for those that did not work, the poverty rate was 14.04%.

Millbrook Poverty

rate

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Rate
Poverty
Less Than 9th Grade75%
Bachelors or Greater2.86%
High School2.33%
Some College0%

Millbrook Poverty Rate by Education

rate

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Rate
Poverty
Male Employed1.35%
Male Unemployed0%
Female Employed0%
Female Unemployed0%

Millbrook Poverty Rate by Employment Status and Sex

Millbrook Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Millbrook Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

68.4%

Overall Marriage Rate

71.6%

Male Marriage Rate

65.9%

Female Marriage Rate

Millbrook Married by Age and Sex

male

female

Millbrook Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Millbrook Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Millbrook Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

9

Number of Veterans

8

Male Veterans

1

Female Veterans

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Millbrook Veterans by War

count

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Millbrook Veterans by Age

count

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Millbrook Veterans by Race

Millbrook Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

0%

Veteran Poverty Rate

0%

Veteran Disability Rate

Millbrook Veterans by Education

LaborForceParticipation

70.1%

Labor Force Participation

67.5%

Employment Rate

3.7%

Unemployment Rate

Millbrook Employment by Age

LaborForceParticipation

Millbrook Employment by Race

LaborForceParticipation

Millbrook 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

82.8%

Born in Millbrook

99.68%

Native Born

0.32%

Foreign Born

0%

Non Citizen

0.32%

Naturalized

Place of Birth

99.68% of Millbrook residents were born in the United States, with 82.8% having been born in Illinois. 0% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Millbrook Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202928810.35%
202828720.7%
202728510.35%
202628420.71%
202528210.36%
202428120.72%
202327910.36%
202227810.36%
202127720.73%
2020275-48-14.86%
2019323-3-0.92%
201832620.62%
201732420.62%
201632230.94%
201531920.63%
201431730.96%
201331420.64%
201231220.65%
201131030.98%
201030700%

Millbrook Population by Year