Millbrook, Illinois Population 2021

324
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Millbrook is a city located in Kendall County Illinois. With a 2020 population of 324, it is the 1000th largest city in Illinois and the 15036th largest city in the United States . Millbrook is currently declining at a rate of -0.61% annually and its population has decreased by -3.28% since the most recent census, which recorded a population of 335 in 2010. Millbrook reached it's highest population of in . Spanning over 2 miles, Millbrook has a population density of 176 people per square mile.

The average household income in Millbrook is $104,150 with a poverty rate of 15.31%. The median rental costs in recent years comes to $1,038 per month, and the median house value is $252,300. The median age in Millbrook is 36.4 years, 36.9 years for males, and 35.5 years for females.

Millbrook Demographics

According to the most recent ACS, the racial composition of Millbrookwas:

  • White: 98.54%
  • Two or more races: 1.46%
  • Black or African American: 0.00%
  • Native American: 0.00%
  • Asian: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
  • Other race: 0.00%
The current population of Millbrook, Illinois is 324 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 328.The last official US Census in 2010 recorded the population at 335.

Millbrook, Illinois Population 2021

Population by Race

Race Population Percentage
White40698.54%
Two or More Races61.46%
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Millbrook Population by Race

Millbrook Population Pyramid $2021

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Millbrook Median Age

36.4


Total

36.9


Male

35.5


Female

Millbrook Adults

There are 317 adults, (39 of whom are seniors) in Millbrook.

Millbrook Age Dependency

48.2

Age Dependency Ratio

14

Old Age Dependency Ratio

34.2

Child Dependency Ratio

Millbrook Sex Ratio

Female

223

54.13%

Male

189

45.87%

Millbrook Population by Age

Millbrook Renter vs Owner Occupied by Household Type

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Millbrook Household Types

Type Owner Renter
Non Family56.8%43.2%
Female75%25%
All85.4%14.6%
Married96.5%3.5%
Male100%0%

85.4%

Rate of Home Ownership

Millbrook Households and Families

Type Count Average Size Owned
All1373.0185.4
Married853.2196.5
Non Family371.8656.8
Male115.09100
Female43.575

3.18

Average Family Size

3.01

Average Household Size

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Millbrook Households by Type

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Education Attained Count Percentage
Less Than 9th Grade0.00%
9th to 12th Grade114.06%
High School Graduate9233.95%
Some College7628.04%
Associates Degree248.86%
Bachelors Degree5219.19%
Graduate Degree165.90%
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Millbrook Educational Attainment by Sex (over 25)

Millbrook Educational Attainment by Race

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Race Total High School Bachelors
White26325268
2+ Races66
Hispanic22

The highest rate of high school graduation is among 2+ races people with a rate of 100.00%.

The highest rate of bachelors degrees is among white people with a rate of 25.86%.

Millbrook Educational Attainment by Race

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Name Average Male Female
Overall$50,833$58,438$36,250
Less Than 9th Grade$$$
High School Graduate$45,313$51,250$8,750
Some College$51,136$57,500$31,667
Bachelors Degree$86,250$85,625$100,139
Graduate Degree$46,250$$38,750

$50,833

Average Earnings

$58,438

Average Male

$36,250

Average Female

Millbrook Earnings by Educational Attainment

Millbrook Language by Age

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Millbrook Language

98.46% of Millbrook residents speak only English, while 1.54% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.54% of the population.

Millbrook Language

Millbrook Poverty by Race

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Name Total In Poverty Poverty Rate
White3885313.66%
Hispanic11981.82%

15.31%

Overall Poverty Rate

13.19%

Male Poverty Rate

17.04%

Female Poverty Rate

Poverty in Millbrook

The race most likely to be in poverty in Millbrook is Hispanic, with 81.82% below the poverty level.

The race least likely to be in poverty in Millbrook is White, with 13.66% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.00%. Among those working part-time, it was 17.72%, and for those that did not work, the poverty rate was 32.65%.

Millbrook Poverty

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Name Poverty
Less Than 9th Grade81.82%
High School6.52%
Some College5.00%
Bachelors or Greater2.94%

Millbrook Poverty Rate by Education

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Rate Poverty
Male Unemployed53.85%
Female Employed8.00%
Female Unemployed0.00%
Male Employed0.00%

Millbrook Poverty Rate by Employment Status and Sex

Millbrook Income by Household Type

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Name Median Mean
Households$85,938$104,150
Families$91,250$110,704
Married Families$103,750-
Non Families$60,625$56,681
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Income by Household Type

Millbrook Marital Status

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Marriage Rates

53.5%

Overall Marriage Rate

55.6%

Male Marriage Rate

51.9%

Female Marriage Rate

Millbrook Married by Age and Sex

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Millbrook 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 55-64.

Millbrook Marital Status by Race

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Millbrook Marital Status

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10

Number of Veterans

7

Male Veterans

3

Female Veterans

War Veterans
First Gulf War4
Vietnam2
Second Gulf War2
World War II
Korea

Millbrook Veterans by War

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Age Group Veterans
35 to 543
75+2
55 to 642
18 to 342
65 to 741

Millbrook Veterans by Age

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Name Veterans % of Total
White103.22%
Hispanic19.09%

Millbrook Veterans by Race

Millbrook Veterans by Education

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0.00%

Veteran Poverty Rate

10.00%

Veteran Disability Rate

Millbrook Veterans by Education

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66.3%

Labor Force Participation

60.9%

Employment Rate

8%

Unemployment Rate

Millbrook Employment by Age

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Millbrook Employment by Race

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Millbrook 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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85.44%

Born in Millbrook

99.76%

Native Born

0.24%

Foreign Born

0.00%

Non Citizen

0.24%

Naturalized

Place of Birth

99.76% of Millbrook residents were born in the United States, with 85.44% having been born in Illinois. 0.00% 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: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
2021324-2-0.61%
2020326-2-0.61%
2019328-2-0.61%
201833020.61%
201732820.61%
201632630.93%
201532320.62%
201432130.94%
201331820.63%
201231620.64%
201131430.96%
20103110.00%

Millbrook Population by Year