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
Get Northbrook's next ACS population data
Subscribe for Population Review updates by email. No spam, unsubscribe anytime.
Northbrook covers 13.2 sq mi of land at 2615 people per square mile.
About Northbrook, IL
Educational attainment is the headline number in Northbrook: 73.1% of adults 25 and older have a four-year degree. With 34,642 residents, Northbrook is a city in Illinois.
Households here are among the highest-earning of all US cities: median income is $155,321, above the US median of $78,538. The poverty rate, 2.4%, is on the lower side for US cities and below the national 12.4%. The median home value is $644,100, with typical rent around $2,334.
The population is unusually well-credentialed for US cities — 73.1% of adults have a four-year degree, above the national 35.0%. An unusually large 27.4% of workers are remote, above the national 14.0%, and the average commute runs about 28 minutes each way.
The education numbers are the throughline: a college-heavy population in Northbrook usually coincides with higher incomes and a workforce concentrated in professional and information industries.
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).
Where to stay in Northbrook
Visiting or relocating to Northbrook, IL? Compare hotels and short-term rentals across the metro — live availability and prices.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
More from Illinois
Population 2,707,648
Population 179,867
Population 149,785
Population 149,424
Population 147,649
Full rankings of Illinois cities by population
Statewide data for Illinois
Population, race, income, age, and trends across Illinois
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.