Northbrook, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Northbrook, Illinois is 34,642 as of the 2023 American Community Survey, making it the 54th-largest city in Illinois. The median household income is $155,321, the median home value is $644,100, and the median age is 49.2.
The population has grown 3.9% since 2010 (33,237 → 34,546).
34,642
Population
2615
People / sq mi
$155,321
Median Income
$644,100
Median Home Value
Northbrook covers 13.2 sq mi of land at 2615 people per square mile.
About Northbrook, IL
Northbrook is a city in Illinois with a population of 34,642. It ranks #54 among cities in Illinois by population. The median age is 49.2, older than the national median. The population is 48.6% male and 51.4% female.
The median household income in Northbrook is $155,321, above the US median of $74,580. 2.4% of residents live below the federal poverty level. Home values sit at a median of $644,100, with monthly rent averaging $2,334. The homeownership rate of 86.6% is higher than the national rate of 64.8%.
Educational attainment in Northbrook reflects 73.1% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 27.4% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 27.7 minutes each way.
Northbrook village Population History (2010-2024)
The city of Northbrook village had a population of 33,237 in 2010 and 34,546 in 2024, a 3.9% growth over 14 years. The peak was 35,152 in 2020. Average annual growth rate: 0.29%.
34,546
Population (2024)
33,237
Population (2010)
35,152
Peak (2020)
0.29%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 33,237 |
| 2011 | 33,400 |
| 2012 | 33,541 |
| 2013 | 33,657 |
| 2014 | 33,711 |
| 2015 | 33,653 |
| 2016 | 33,517 |
| 2017 | 33,334 |
| 2018 | 33,110 |
| 2019 | 32,958 |
| 2020 | 35,152 |
| 2021 | 34,613 |
| 2022 | 34,268 |
| 2023 | 34,291 |
| 2024 | 34,546 |
Race & Ethnicity
| White | 75.5% |
| Black or African American | 2.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.1% |
| Two or More Races | 0.0% |
Economy & Income
$155,321
Median Household Income
$85,680
Per Capita Income
2.4%
Poverty Rate
2.0%
Unemployment Rate
Housing
$644,100
Median Home Value
$2,334
Median Rent
86.6%
Owner-Occupied
Education
97.3%
High School+
73.1%
Bachelor's+
Commute
7.0%
Drive Alone
56.9%
Public Transit
27.4%
Work From Home
27.7 min
Avg Commute
Community Profile
18.6%
Foreign Born
74.6%
Non-English at Home
3.7%
Veterans
8.2%
With Disability
98.0%
Health Insurance
95.8%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 22.8% |
| Finance, Insurance & Real Estate | 22.2% |
| Information | 14.8% |
| Manufacturing | 7.7% |
| Education, Health Care & Social Services | 5.2% |
| Construction | 4.4% |
| Arts, Entertainment & Food Services | 3.8% |
| Retail Trade | 2.6% |
| Transportation & Warehousing | 2.5% |
| Public Administration | 1.5% |
| Agriculture & Mining | 0.1% |
Largest cities in Illinois
Largest counties in Illinois
Part of Illinois
Metro areas in Illinois
City rankings
Frequently Asked Questions
Northbrook, Illinois has a population of 34,642 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 54th-largest city in Illinois.
The median household income in Northbrook, Illinois is $155,321, with 2.4% of residents living below the federal poverty level.
The median home value in Northbrook, Illinois is $644,100, with median monthly rent at $2,334 and a homeownership rate of 86.6%.
The median age in Northbrook, Illinois is 49.2 years. The population is 48.6% male and 51.4% female.
The population has grown 3.9% since 2010 (33,237 → 34,546).
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.