Population 408 · Census ACS 2020–24
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Median age by neighborhoodHistory and comparison ↓︎
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Population and households in Millbrook
Household size in Millbrook
| Period | Millbrook | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.65 | 2.79 | 2.69 | 2.68 |
| 2010–14 | 2.53 | 2.82 | 2.71 | 2.73 |
| 2015–19 | 2.82 | 2.75 | 2.66 | 2.71 |
| 2020–24 | 2.65 | 2.66 | 2.58 | 2.65 |
| Change | +0.00 | −0.12 | −0.11 | −0.03 |
At 2.65 people per household, Millbrook sits right at the national average.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Millbrook
| Period | Millbrook | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 35.5 | 36.8 | 37.6 | 37.7 |
| 2010–14 | 48.1 | 37.8 | 38.5 | 38.6 |
| 2015–19 | 38.0 | 38.9 | 39.6 | 39.6 |
| 2020–24 | 44.8 | 39.7 | 40.2 | 40.1 |
| Change | +9.3 | +3.0 | +2.6 | +2.3 |
With a median age of 44.8, Millbrook is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. Since 2006–10, the median age has climbed from 35.5, but in a place this small, much of that may be survey noise rather than real change.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Millbrook
| Period | Millbrook | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.0% | 12.0% | 11.7% | 12.3% |
| 2010–14 | 5.6% | 12.0% | 11.7% | 12.3% |
| 2015–19 | 4.1% | 11.2% | 11.1% | 11.6% |
| 2020–24 | 8.3% | 11.5% | 11.3% | 11.6% |
| Change | +0.2 pts | −0.5 pts | −0.4 pts | −0.6 pts |
Single-parent households are relatively rare in Millbrook: 8.3% of households, against 11.6% nationally.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Millbrook
Renters in Millbrook
| Period | Millbrook | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.0% | 32.1% | 30.8% | 33.3% |
| 2010–14 | 7.9% | 34.8% | 33.1% | 35.6% |
| 2015–19 | 14.7% | 35.5% | 33.9% | 36.0% |
| 2020–24 | 14.0% | 34.5% | 32.9% | 34.8% |
| Change | +5.0 pts | +2.3 pts | +2.1 pts | +1.5 pts |
Millbrook is overwhelmingly a place of homeowners: only 14.0% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 40.9% have no mortgage at all, about the same as nationally.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Millbrook
| Period | Millbrook | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.3% | 9.8% | 10.0% | 11.4% |
| 2010–14 | 9.4% | 9.8% | 10.1% | 11.4% |
| 2015–19 | 15.9% | 8.9% | 9.8% | 11.1% |
| 2020–24 | 15.2% | 7.2% | 8.1% | 9.6% |
| Change | +10.9 pts | −2.6 pts | −1.9 pts | −1.8 pts |
Vacant homes make up 15.2% of the housing in Millbrook, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Millbrook
| Period | Millbrook | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 1976 | 1966 | 1966 | 1974 |
| 2010–14 | 1988 | 1967 | 1967 | 1975 |
| 2015–19 | 1981 | 1967 | 1968 | 1977 |
| 2020–24 | 1984 | 1970 | 1970 | 1980 |
| Change | +8 | +4 | +4 | +6 |
The housing in Millbrook is a little younger than the country's: half of it was built after 1984, against 1980 nationally.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Millbrook
| Period | Millbrook | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,567 | $1,060 | $953 | $965 |
| 2010–14 | $675 | $1,142 | $1,028 | $1,040 |
| 2015–19 | $1,098 | $1,306 | $1,165 | $1,213 |
| 2020–24 | $2,069 | $1,602 | $1,428 | $1,571 |
| Change | +$502 | +$542 | +$475 | +$606 |
A typical rental in Millbrook costs $2,069 a month with utilities, well above the national median of $1,571. The typical renter here spends 51.0% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Millbrook
Bachelor's degrees in Millbrook
| Period | Millbrook | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 22.5% | 33.9% | 31.2% | 28.4% |
| 2010–14 | 26.8% | 35.2% | 32.4% | 29.6% |
| 2015–19 | 20.7% | 37.9% | 34.7% | 32.1% |
| 2020–24 | 33.5% | 40.9% | 37.7% | 35.6% |
| Change | +11.1 pts | +7.0 pts | +6.5 pts | +7.2 pts |
About a third of adults 25 and older in Millbrook (33.5%) hold at least a bachelor's degree, close to the national share of 35.6%. The share is lower than in the Chicago area overall (40.9%).
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Millbrook
| Period | Millbrook | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 96.6% | 85.6% | 86.3% | 84.9% |
| 2010–14 | 90.6% | 86.7% | 87.5% | 86.1% |
| 2015–19 | 95.6% | 88.4% | 89.1% | 87.7% |
| 2020–24 | 97.2% | 89.5% | 90.3% | 89.3% |
| Change | +0.5 pts | +3.9 pts | +4.0 pts | +4.3 pts |
Finishing high school is nearly universal in Millbrook: 97.2% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Millbrook
| Period | Millbrook | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.8% | 9.1% | 8.7% | 8.1% |
| 2010–14 | 11.7% | 10.8% | 10.2% | 9.4% |
| 2015–19 | 4.3% | 6.3% | 6.1% | 5.6% |
| 2020–24 | 0.5% | 6.3% | 6.0% | 5.4% |
| Change | −5.2 pts | −2.8 pts | −2.7 pts | −2.7 pts |
The job market in Millbrook has been strong: just 0.5% of the labor force was out of work and looking, well below the national rate of 5.4%. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Millbrook compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Millbrook | 2.65 | 44.8 | 8.3% | 14.0% | 15.2% | 1984 | $2,069 | 33.5% | 97.2% | 0.5% |
| Millhurst | 2.50 | 47.1 | 7.6% | 12.2% | 10.2% | 1983 | $1,769 | 30.4% | 97.2% | 0.3% |
| Millington | 2.46 | 45.2 | 8.9% | 14.7% | 7.1% | 1979 | $1,467 | 22.3% | 89.6% | 3.1% |
| Newark | 2.92 | 40.0 | 9.0% | 17.9% | 10.0% | 1963 | $1,537 | 27.5% | 97.0% | 2.8% |
| Sandwich | 2.50 | 42.6 | 9.0% | 17.2% | 7.0% | 1981 | $1,213 | 22.9% | 93.5% | 3.7% |
| Plano | 3.04 | 33.2 | 19.0% | 26.8% | 4.3% | 1990 | $1,618 | 24.0% | 93.2% | 4.9% |
| Somonauk | 2.49 | 44.5 | 5.5% | 17.7% | 5.7% | 1977 | $1,305 | 27.6% | 97.4% | 2.6% |
| Yorkville | 2.97 | 37.5 | 9.9% | 14.8% | 3.9% | 1999 | $1,777 | 36.0% | 94.6% | 3.5% |
| Lisbon Center | 3.33 | 32.3 | 9.4% | 12.0% | 2.9% | 1981 | $1,806 | 31.7% | 93.4% | 7.3% |
| Sheridan | 2.32 | 44.3 | 8.3% | 17.7% | 4.0% | 1975 | $1,164 | 17.4% | 85.7% | 4.0% |
| Lisbon | 3.06 | 36.4 | 7.6% | 22.5% | 4.4% | 1972 | $1,425 | 22.2% | 95.7% | 3.4% |
All figures 2020–24.
Cities with similar populations: Heilwood, PA · Holden, UT · Hodgen, OK · Hitchcox, TN · Highpoint, MS · Hewlett Neck, NY · Hestand, KY · Herreid, SD · Herbert Springs, MS · Holly Ridge, LA
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Millbrook. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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