Green Brook, NJ demographics:
population, income, and more

Total population
11,040
0.3% year-over-year change
Median household income
$118,316/yr
-1.0% year-over-year change
Housing units
3,899
2.2% year-over-year change

Green Brook population

How many people live in Green Brook

Green Brook is home to 11,040 residents, according to the most recent Census data. Gender-wise, 56.8% of Green Brook locals are male, and 43.2% are female.

Total population
11,040
0.3% year-over-year change
Gender ratio
Male
56.8%
6,272
Female
43.2%
4,768
Value Percent YoY change
Male 6,272 56.8% 2.3%
Female 4,768 43.2% -2.1%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Green Brook is 43, with the population distributed as follows: about 15.2% are children under 15, then 15.9% are in the 15 to 24 age group. Adults between 25 and 44 make up 23.1% of the population, while another 31% fall into the 45 to 64 bracket. Finally, around 14.8% are 65 or older.

Median age
42.9
Age breakdown
Under 15
15.2%
15 to 24
15.9%
25 to 44
23.1%
45 to 64
31%
Over 65
14.8%
Value Percent YoY change
Under 15 1,673 15.2% 1.7%
15 to 24 1,753 15.9% -7.0%
25 to 44 2,555 23.1% 1.5%
45 to 64 3,421 31% 0.7%
Over 65 1,638 14.8% 5.1%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Green Brook, 67.1% of the population are US-born citizens, while 20.1% have gained naturalized citizenship. At the same time, 12.8% of residents are non-citizens. As for race, 50.9% of locals are Caucasian, 4.1% are African American and 10.4% have Asian roots. There’s also a share of 16% that includes residents with two or more races.

Citizenship
U.S.-born citizens
67.1%
Non-U.S.-born citizens
20.1%
Non-citizens
12.8%
Value Percent YoY change
U.S.-born citizens 7,405 67.1% 4.6%
Non-U.S.-born citizens 2,223 20.1% -14.3%
Non-citizens 1,412 12.8% 6.1%
Racial breakdown
White
50.9%
Black or African American
4.1%
American Indian and Alaska Native
0%
Asian
10.4%
Native Hawaiian and other Pacific Islander
0%
Two or more races
16%
Other
18.6%
Value Percent
White 5,615 50.9%
Black or African American 453 4.1%
Asian 1,149 10.4%
Two or more races 1,767 16%
Other 2,057 18.6%

Households in Green Brook

A peek inside Green Brook households

Green Brook has 3,671 households, with an average of 3 members in each. Of these, 75.2% are families, while the remaining 24.8% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
3,671
3.9% year-over-year change
Average people per household
3
Non-family households
910
Family households
2,762
Value Percent YoY change
Non-family households 910 24.8% 12.9%
Family households 2,762 75.2% 1.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Green Brook

The housing landscape of Green Brook

Green Brook's housing consists of 3,899 units, with 62.4% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 5.1% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 0.3% of the housing landscape.

Housing units
3,899
2.2% year-over-year change
Housing types
Value Percent
1 unit, detached 2,435 62.4%
1 unit, attached 199 5.1%
2 units 508 13%
3 or 4 units 255 6.5%
5 to 9 units 338 8.7%
10 to 19 units 140 3.6%
20 to 49 units 14 0.4%
Mobile home 10 0.3%
Homes built since 2020
13
% year-over-year change

The age of buildings in Green Brook

In Green Brook, the median construction year is 1960. About 18.3% of homes were built before the 1940s, with another 7.1% going up by 1949. Most development happened in the second half of the 20th century. Then, 8.4% of homes were added from 2000 to 2009, 6.9% between 2010 and 2019, and 0.3% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 715 18.3% -20.8%
Built between 1940 and 1949 276 7.1% 42.3%
Built between 1950 and 1959 983 25.2% 53.6%
Built between 1960 and 1969 349 9% 6.4%
Built between 1970 and 1979 507 13% -10.3%
Built between 1980 and 1989 82 2.1% -13.7%
Built between 1990 and 1999 376 9.6% -2.1%
Built between 2000 and 2009 328 8.4% -29.3%
Built between 2010 and 2019 270 6.9% 11.6%
Built in 2020 or later 13 0.3% N/A
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Green Brook occupancy rates

Out of the 3,671 occupied housing units in Green Brook, 75.3% are owner-occupied, while 24.7% are lived in by tenants. Meanwhile, 5.8% of all homes on the local market sit vacant.

Occupied housing units
3,671
3.9% year-over-year change
Occupancy breakdown
Renter occupied
907
Owner occupied
2,764
Value Percent YoY
change
Renter occupied 907 24.7% 9.7%
Owner occupied 2,764 75.3% 2.1%
Unoccupied housing units
5.8%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Green Brook housing costs

Housing costs in Green Brook come to a median of $2,361 per month, while tenants specifically pay a median gross rent of $1,866.

Median housing costs per month
$2,361/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Green Brook
$1,866/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Green Brook

Green Brook education at a glance

About 35.1% of the population in Green Brook went to high school, while 17% pursued college studies. Another 6.9% earned an associate degree and 25.9% hold a bachelor’s. Meanwhile, 11.8% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 297 3.4% -5.7%
High school diploma 3,077 35.1% -0.4%
College diploma 1,493 17% 7.9%
Associate degree 603 6.9% 15.3%
Bachelor's degree 2,270 25.9% -2.1%
Graduate degree 1,031 11.8% 4.6%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Green Brook

How much people earn in Green Brook

The average annual household income in Green Brook was $146,964 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -0.8% change from the previous year. At the same time, the median income stood at $118,316, reflecting a -1% shift over the same period.

Average household income in Green Brook
$146,964/year
-0.8% year-over-year change
Median household income in Green Brook
$118,316/year
-1.0% year-over-year change

Green Brook income by age

In Green Brook, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $111,014. Those with someone between 45 and 64 in charge, often well established professionally, earn $167,639 overall. Overall, 84.6% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $111,014 -8.7%
45 - 64 $167,639 7.5%
Over 65 $73,179 19.1%
Above poverty level
9,167
Below poverty level
1,673
Value Percent YoY
change
Above poverty level 9,167 84.6% 1.0%
Below poverty level 1,673 15.4% 0.0%

Employment in Green Brook

Workforce and job types in Green Brook

82.9% of the working population are employed in professional or administrative positions, while 17.1% are in hands-on or service-based jobs. Also, 9.9% run their own businesses, 79.6% are employed by private companies, and 7.4% work in the public sector.

Workforce demographics

White collar
5,043
Blue collar
1,038
Value Percent YoY change
White collar 5,043 82.9% 9.3%
Blue collar 1,038 17.1% -9.1%
Employer type
Self employees
9.9%
Private companies
79.6%
Governmental workers
7.4%
Not for profit companies
3.1%
Value Percent YoY change
Self employees 602 9.9% 21.9%
Private companies 4,840 79.6% 6.9%
Governmental workers 447 7.4% 5.7%
Not for profit companies 191 3.1% -38.8%

Transportation in Green Brook

How people get around in Green Brook

Means of transportation
Value Percent YoY change
Car 4,728 97% 6.7%
Bus or trolleybus 25 0.5% -61.5%
Railroad 122 2.5% 6.1%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Green Brook by zipcode?

Zipcode Population Number of households Median income Average income
08812 14,224 4,730 $118,316 $157,905

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FAQs about Green Brook demographics 

What is the total population of Green Brook?

Green Brook has a total population of 11,040 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.3% compared to a year ago.

What is the gender ratio in Green Brook?

The gender ratio in Green Brook is as follows:
  • 56.8% males (6,272 residents)
  • 43.2% females (4,768 residents)

What is the median age in Green Brook?

The median age in Green Brook is 42.9.

What is the age distribution of the population in Green Brook?

The age distribution in Green Brook is as follows:
  • Under 15: 15.2% (1,673 residents)
  • Ages 15-24: 15.9% (1,753 residents)
  • Ages 25-44: 23.1% (2,555 residents)
  • Ages 45-64: 31% (3,421 residents)
  • Over 65: 14.8% (1,638 residents)

What is the racial and ethnic makeup of Green Brook?

The racial and ethnic makeup of Green Brook is as follows:
  • White: 50.9% (5,615 residents)
  • Black or African American: 4.1% (453 residents)
  • American Indian and Alaska Native: 0% ( residents)
  • Asian: 10.4% (1,149 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 16% (1,767 residents)
  • Other: 18.6% (2,057 residents)

What percentage of the population in Green Brook are U.S.-born citizens?

U.S.-born citizens represent 67.1% of the population in Green Brook.

How many housing units are there in Green Brook?

There are 3,899 housing units in Green Brook, reflecting a +2.2% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Green Brook and what is the average household size?

Green Brook has a total of 3,671 households, with an average of 3 people in each.

What is the median household income in Green Brook?

Green Brook has a median household income of $118,316, representing a -1.0% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Green Brook?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 82.9% (5,043 residents)
  • Blue-collar workers: 17.1% (1,038 residents)

Places of employment:
  • Self-employed: 9.9% (602 residents)
  • Private companies: 79.6% (4,840 residents)
  • Governmental workers: 7.4% (447 residents)
  • Not-for-profit companies: 3.1% (191 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025