Northbrook Population

1910–2026

34,597

2026 projection

1.6% since 2020 (decrease)

010K20K30K40K192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Northbrook. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202634,597-1470.42%
202534,744+1710.49%
202434,573+2610.76%
202334,312+600.18%
202234,252-3761.09%
202134,628-5311.51%
202035,159+2,2336.78%
201932,926-1790.54%
201833,105-2190.66%
201733,324-1880.56%

Showing 10 of 27 years.

Northbrook Demographics

49.6median age

Median age

Female51.3 yrs
Male48.2 yrs

Adults

27,266
9,188 seniors · 34%18,078 other adults

Sex

Female 50.9% · 17,605Male 49.1% · 16,980

Population by age

MaleFemale85+ years, male: 65485+ years, female: 91680–84 years, male: 61680–84 years, female: 70975–79 years, male: 77375–79 years, female: 99270–74 years, male: 1,14170–74 years, female: 1,24465–69 years, male: 99065–69 years, female: 1,15360–64 years, male: 1,09060–64 years, female: 1,22455–59 years, male: 1,50755–59 years, female: 1,51950–54 years, male: 1,22850–54 years, female: 1,31145–49 years, male: 1,17645–49 years, female: 1,05840–44 years, male: 80940–44 years, female: 1,01735–39 years, male: 1,05535–39 years, female: 1,15930–34 years, male: 70830–34 years, female: 43725–29 years, male: 51125–29 years, female: 48420–24 years, male: 52620–24 years, female: 51215–19 years, male: 1,22315–19 years, female: 1,03610–14 years, male: 1,09710–14 years, female: 8515–9 years, male: 1,0065–9 years, female: 1,2010–4 years, male: 8700–4 years, female: 78285+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 346 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Northbrook Income

$157,782median household income

Median household income

$157,782

Half of households earn more, half earn less

Median earnings

$98,613

Typical yearly pay for a worker 25 or older.

Poverty rate

4.3%

About 1 in 23 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Northbrook Marital Status

64% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married64%66%61%
Never married22%24%19%
Divorced7%5%9%
Widowed7%3%10%
Separated<1%<1%<1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year