| City: | Millbrook, Illinois |
| County: | Kendall County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 8:05:53 AM |
| Population: | 80 [See All] |
| Area Codes: | 331 / 630 |
| Classification: | PO Box |
| Coordinates: | 41.5960, -88.5565 |
| Land Area: | 0.134 sq mi |
| Quick Link: |
Millbrook's post office serves a much wider area than its official population suggests. While just 80 people live within this ZIP code, the facility maintains 97 PO Boxes. That's an adoption rate of 2.77, meaning the post office handles mail for roughly three times as many boxes as there are local households. This isn't unusual for small rural communities where surrounding properties lack street delivery.
The community spans just 0.11 square miles of land in Kendall County, Illinois. That makes it one of the smallest ZIP code areas in the state. The 35 occupied housing units house about 2.3 people each, slightly below the national average. Median household income sits at $90,000, well above the state median.
Delivery here runs entirely through rural carrier routes. Two distinct rural routes handle the street delivery for addresses scattered across the service area. Harris Avenue has the most delivery points with 5 records, including upper-level units. Fox River Drive, Burton Street, and Sherman Street round out the core street grid. The post office itself operates under route designation "D" for drawer service.
Six business establishments employ 39 people within the ZIP code, according to Census business patterns data. The median age of 40.5 years sits right at the national average. About 89% of the population identifies as white, with 23% reporting Hispanic or Latino origin. The community doesn't maintain city-style carrier routes, which explains why so many residents and businesses rely on PO Box service for consistent mail delivery.
Fox River Drive references the nearby Fox River waterway that shapes this region of Kendall County. Sherman and Burton Streets suggest historical naming patterns common in 19th-century Illinois settlements. The compact street grid reflects the town's small 0.11 square mile footprint.
ZIP Code 60536 has 80 residents and 35 households (average 2.29 persons per household). The median age is 40.5 years, slightly older than the state (38.8) and slightly older than the nation (38.8). The gender split is 40.0% male and 60.0% female, which is much lower than the national male share (49.1%), making this a female-majority area. Largest groups are White (88.8%, much higher than the state average of 61.4% and well above the national average of 61.6%) and Hispanic or Latino (6.3%); Hispanic or Latino residents make up 6.3%, which is much lower than the national average (18.7%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 80Source: Census DHC |
| 2024 ACS Population Estimate: | 62Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 597.0 people per sq mile |
| Average Income: | $115,625Source: Census ACS |
| Households: | 35Source: Census DHC |
| Average House Value: | $183,300Source: Census ACS |
| Persons Per Household: | 2.29Source: Census DHC |
| Average Family Size: | 1.93Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 95 | 93 | 109 | 111 | 113 | 122 | 152 | 116 | 139 | 108 | 122 | 88 | 76 | 62 |
| Decennial Census | 126 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 80 | -- | -- | -- | -- |
Median Age: 40.5
Male Median Age: 39
Female Median Age: 55.2
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 2 | 1 | 4 | 3 | 3 | 0 | 2 | 1 | 9 | 2 | 0 | 0 | 1 | 0 | 2 | 1 | 1 | 0 |
| Female | 3 | 3 | 2 | 0 | 1 | 2 | 12 | 0 | 0 | 0 | 0 | 7 | 5 | 2 | 7 | 4 | 0 | 0 |
| Total | 5 | 4 | 6 | 3 | 4 | 2 | 14 | 1 | 9 | 2 | 0 | 7 | 6 | 2 | 9 | 5 | 1 | 0 |
| White: | 71 | 91.03% |
| Black: | 0 | 0% |
| Hispanic:* | 5 | 6.41% |
| Asian: | 0 | 0% |
| American Indian: | 0 | 0% |
| Hawaiian: | 0 | 0% |
| Other: | 2 | 2.56% |
| Total: | 78 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 32 | 40.00% | 39.0 years |
| Females: | 48 | 60.00% | 55.2 years |
| Total: | 80 | 100% | 40.5 years |
| Native, born in the United States: | 62 | 100.00% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0.00% |
| Foreign born, naturalized U.S. citizen: | 0 | 0.00% |
| Foreign born, not a U.S. citizen: | 0 | 0.00% |
| Total Population: | 62 | 100% |
| Total Native Population: | 62 | 100.00% |
| Total Foreign-born Population: | 0 | 0.00% |
In 2024, the Median household income is $115,625, which is much higher than the national median ($80,734), is up $41,696 (56.4%) since 2011 and above its 2019 pre-pandemic level by $40,208. Family households earn a median of $120,000 versus $0 for nonfamily households (a difference of $120,000). By gender, male median income is $121,250 and female is $66,250, which is far above the national female median ($55,274), with a current gap of $55,000 that has widened from 2011 to 2024. The labor-force participation rate is 70.8%, which is far greater than the national rate (63.5%). The unemployment rate is 0.0%, which is considerably lower than the national rate (5.2%). The largest occupation group is Management (41.2%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $73,929 | $74,250 | $76,875 | $76,875 | $65,625 | $70,000 | $61,250 | $71,250 | $75,417 | $68,750 | $83,750 | $89,375 | $90,000 | $115,625 |
| Median Family Income | $76,250 | $79,167 | $101,250 | $83,750 | $81,250 | $78,750 | $71,250 | $78,750 | $78,750 | $81,250 | $108,125 | $101,250 | $106,250 | $120,000 |
| Median NonFamily Income | $73,214 | $73,250 | $47,250 | $49,500 | $49,000 | $49,750 | $47,917 | $0 | $66,250 | $58,750 | $66,250 | $76,250 | $78,750 | $0 |
| Median Male Income | $55,000 | $61,250 | $48,750 | $47,188 | $0 | $51,875 | $53,750 | $59,000 | $60,000 | $52,500 | $86,250 | $69,375 | $73,333 | $121,250 |
| Median Female Income | $73,036 | $73,000 | $75,417 | $71,250 | $0 | $33,750 | $35,833 | $35,417 | $38,250 | $63,750 | $62,857 | $66,875 | $58,750 | $66,250 |
| Employed: | 34 | 70.83% |
| Unemployed: | 0 | 0.00% |
| Not In Labor Force: | 14 | 29.17% |
| Total: | 48 | 100% |
| Management, business, science, and arts: | 14 | 41.18% |
| Service: | 2 | 5.88% |
| Sales and Office: | 14 | 41.18% |
| Natural resources, construction, and maintenance: | 1 | 2.94% |
| Production, transportation, and material moving: | 3 | 8.82% |
| Total Civilian Employed Population: | 34 | 100% |
In 2024, the median home value is $183,300, which is considerably lower than the national median ($332,700), is down $14,600 (7.38%) since 2011 and below its 2019 pre-pandemic level by $20,500. The median gross rent is $0, which is well under the national median ($1,413), is down $825 (100.00%) since 2011 and below its 2019 pre-pandemic level by $1,125. Insufficient data for owner/renter mix. Insufficient data for vacancy rate.
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $197,900 | $198,600 | $179,700 | $167,200 | $159,100 | $156,300 | $164,300 | $191,700 | $203,800 | $219,200 | $162,500 | $187,500 | $200,000 | $183,300 |
| Less than $500: | 0 | 0.00% |
| $500 to $999: | 1 | 100.00% |
| $1,000 to $1,499: | 0 | 0.00% |
| $1,500 to $1,999: | 0 | 0.00% |
| $2,000 to $2,499: | 0 | 0.00% |
| $2,500 to $2,999: | 0 | 0.00% |
| $3,000 or more: | 0 | 0.00% |
| No Rent: | 0 | 0.00% |
| Total: | 1 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $825 | $825 | $0 | $700 | $917 | $950 | $1,111 | $1,125 | $1,125 | $1,100 | $1,063 | $1,094 | $1,100 | $0 |
| Owner Occupied (with mortgage): | 15 | 55.56% |
| Owner Occupied (free and clear, no mortgage): | 11 | 40.74% |
| Renter Occupied: | 1 | 3.70% |
| Total Occupied Housing Units: | 27 | 100% |
| Occupied Housing Units: | 27 | 87.10% |
| Vacant Housing Units (not graphed): | 4 | 12.90% |
| Total Housing Units: | 31 | 100% |
| Single-Family Units: | 31 | 100.00% |
| Multi-Family Units: | 0 | 0.00% |
| Other Units: | 0 | 0.00% |
| Total Housing Units: | 31 | 100% |
In 2024, 16.30% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.70%). High school or higher is 97.70%, which is far higher than the national rate (89.60%). The uninsured rate is 1.60%, which is far lower than the national rate (8.40%). Private coverage is 87.10%, which is well above the national rate (67.10%). The share of people in poverty is 4.50%, which is comparable to the national rate (8.80%), down 1.10 percentage points since 2011 and below its 2019 pre-pandemic level by 4.40 percentage points. This suggests a positive shift in the local economic and social landscape - higher incomes, steadier consumer demand, and a strengthening tax base. Among residents ages 3+, the largest enrollment group is elementary (100.00%). College enrollment is 0.00%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 0 | 0.00% |
| 9th to 12th grade, no diploma: | 1 | 2.33% |
| High school graduate (includes equivalency): | 14 | 32.56% |
| Some college, no degree: | 15 | 34.88% |
| Associate's degree: | 6 | 13.95% |
| Bachelor's degree: | 7 | 16.28% |
| Graduate or professional degree: | 0 | 0.00% |
| Total: | 43 | 100% |
| High school or higher: | 42 | 97.67% |
| Bachelor's degree or higher: | 7 | 16.28% |
| Private Insurance: | 54 | 77.14% |
| Public Insurance: | 15 | 21.43% |
| No Insurance: | 1 | 1.43% |
| Total: | 70 | 100% |
| Has Health Insurance: | 69 | 98.57% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 6.7% | 6.7% | 4.2% | 0.0% | 0.0% | 9.1% | 14.7% | 15.4% | 10.0% | 11.5% | 0.0% | 4.3% | 5.6% | 4.5% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 0 | 0.00% |
| Kindergarten: | 0 | 0.00% |
| Elementary school (grades 1-8): | 7 | 100.00% |
| High school (grades 9-12): | 0 | 0.00% |
| College or graduate school: | 0 | 0.00% |
| Total: | 7 | 100% |
| Early Childhood: | 0 | 0.00% |
| K-12 (Primary & Secondary School): | 7 | 100.00% |
ZIP Code 60536 supports both business and residential activity. According to the Business Census (2024), there are 6 business establishments, employing about 39 people with an annual payroll of $2,619,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 111Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 6Source: CBP |
| 1st Quarter Payroll: | $363,000Source: CBP |
| Annual Payroll: | $2,619,000Source: CBP |
| # of Employees: | 39Source: CBP |
ZIP Code 60536 is located in Kendall County, Illinois, within the Chicago-Naperville-Elgin, IL-IN Metropolitan Statistical Area (CBSA 16980) and Illinois's 14th Congressional District. This Metro area has a population of 9,461,105 people, about 0.00% of whom live in ZIP Code 60536, and is subdivided into the Elgin, IL division. It covers 0.134 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Chicago-Naperville-Elgin, IL-INSource: Census |
| CBSA Number: | 16980Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Elgin, IL (CBSA Div 20994)Source: Census |
| CBSA Population: | 9,461,105Source: Census |
| MSA: | Chicago-Gary-Kenosha, IL-IN-WI CMSASource: Census |
| Land Area: | 0.134 sq miSource: Census |
| Water Area: | --Source: Census |
| Congressional District: | 14Source: USPS |
| Congressional Land Area: | 1597.6 sq miSource: Census |
| PMSA: | Chicago, IL PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1749100Source: Census |
| Place Name: | Millbrook village; IllinoisSource: Census |
We could not locate which school district 60536 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on March 1, 2026.