Millbrook is a city located in Grundy County, Kendall County, and LaSalle 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 age in Millbrook is 38.1 years: 38.1 years for males, and 38.1 years for females.
According to the most recent ACS, the racial composition of Millbrook was:
White
Two or more races
Black or African American
Native American
Asian
Native Hawaiian or Pacific Islander
Other race
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 106 | 2.96 | 95.3 | 4.7 |
| Married | 78 | 3.21 | 98.7 | 1.3 |
| Non Family | 19 | 1.11 | 78.9 | 21.1 |
| Male | 7 | 5.43 | 100 | 0 |
| Female | 2 | 2.5 | 100 | 0 |
3.23
Average Family Size
2.96
Average Household Size
95.3%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
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%.
All
Male
Female
$59,375
Average Earnings
$86,875
Average Male
$43,750
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
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.
rate
7.01%
Overall Poverty Rate
6.29%
Male Poverty Rate
7.6%
Female Poverty Rate
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%.
Married
Widowed
Divorced
Separated
NeverMarried
68.4%
Overall Marriage Rate
71.6%
Male Marriage Rate
65.9%
Female Marriage Rate
male
female
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.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
0%
Veteran Poverty Rate
0%
Veteran Disability Rate
LaborForceParticipation
70.1%
Labor Force Participation
67.5%
Employment Rate
3.7%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
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.
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
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.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 288 | 1 | 0.35% |
| 2028 | 287 | 2 | 0.7% |
| 2027 | 285 | 1 | 0.35% |
| 2026 | 284 | 2 | 0.71% |
| 2025 | 282 | 1 | 0.36% |
| 2024 | 281 | 2 | 0.72% |
| 2023 | 279 | 1 | 0.36% |
| 2022 | 278 | 1 | 0.36% |
| 2021 | 277 | 2 | 0.73% |
| 2020 | 275 | -48 | -14.86% |
| 2019 | 323 | -3 | -0.92% |
| 2018 | 326 | 2 | 0.62% |
| 2017 | 324 | 2 | 0.62% |
| 2016 | 322 | 3 | 0.94% |
| 2015 | 319 | 2 | 0.63% |
| 2014 | 317 | 3 | 0.96% |
| 2013 | 314 | 2 | 0.64% |
| 2012 | 312 | 2 | 0.65% |
| 2011 | 310 | 3 | 0.98% |
| 2010 | 307 | 0 | 0% |