Forest Knolls, Marin County, CA demographics:
population, income, and more

Total population
1,372
-10.6% year-over-year change
Median household income
$171,914/yr
14.4% year-over-year change
Housing units
726
3.0% year-over-year change

Forest Knolls population

How many people live in Forest Knolls

Forest Knolls is home to 1,372 residents, according to the most recent Census data. Gender-wise, 57.6% of Forest Knolls locals are male, and 42.4% are female.

Total population
1,372
-10.6% year-over-year change
Gender ratio
Male
57.6%
791
Female
42.4%
581
Value Percent YoY change
Male 791 57.6% 1.1%
Female 581 42.4% -22.7%
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 Forest Knolls is 46, with the population distributed as follows: about 8.4% are children under 15, then 11.4% are in the 15 to 24 age group. Adults between 25 and 44 make up 15% of the population, while another 28.3% fall into the 45 to 64 bracket. Finally, around 36.9% are 65 or older.

Median age
46.1
Age breakdown
Under 15
8.4%
15 to 24
11.4%
25 to 44
15%
45 to 64
28.3%
Over 65
36.9%
Value Percent YoY change
Under 15 115 8.4% -48.7%
15 to 24 156 11.4% -8.8%
25 to 44 206 15% -22.3%
45 to 64 388 28.3% -13.0%
Over 65 506 36.9% 18.5%
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 Forest Knolls, 86.2% of the population are US-born citizens, while 10.4% have gained naturalized citizenship. At the same time, 3.4% of residents are non-citizens. As for race, 65.8% of locals are Caucasian, 4.2% are African American and 6.5% have Asian roots. There’s also a share of 20.8% that includes residents with two or more races.

Citizenship
U.S.-born citizens
86.2%
Non-U.S.-born citizens
10.4%
Non-citizens
3.4%
Value Percent YoY change
U.S.-born citizens 1,183 86.2% -10.4%
Non-U.S.-born citizens 142 10.4% 20.3%
Non-citizens 47 3.4% -50.5%
Racial breakdown
White
65.8%
Black or African American
4.2%
American Indian and Alaska Native
2.3%
Asian
6.5%
Native Hawaiian and other Pacific Islander
0%
Two or more races
20.8%
Other
0.4%
Value Percent
White 903 65.8%
Black or African American 58 4.2%
American Indian and Alaska Native 31 2.3%
Asian 89 6.5%
Two or more races 286 20.8%
Other 5 0.4%

Households in Forest Knolls

A peek inside Forest Knolls households

Forest Knolls has 681 households, with an average of 2 members in each. Of these, 50.1% are families, while the remaining 49.9% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
681
-0.9% year-over-year change
Average people per household
2
Non-family households
340
Family households
341
Value Percent YoY change
Non-family households 340 49.9% 5.9%
Family households 341 50.1% -6.8%
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 Forest Knolls

The housing landscape of Forest Knolls

Forest Knolls's housing consists of 726 units, with 84.4% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 5% and offer a more compact, shared living style.

Housing units
726
3.0% year-over-year change
Housing types
Value Percent
1 unit, detached 613 84.4%
1 unit, attached 36 5%
2 units 19 2.6%
3 or 4 units 58 8%
Homes built since 2020
% year-over-year change

The age of buildings in Forest Knolls

In Forest Knolls, the median construction year is 1965. About 32.9% of homes were built before the 1940s, with another 7.6% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 239 32.9% -12.8%
Built between 1940 and 1949 55 7.6% -24.7%
Built between 1950 and 1959 104 14.3% 395.2%
Built between 1960 and 1969 92 12.7% -30.8%
Built between 1970 and 1979 32 4.4% -36.0%
Built between 1980 and 1989 82 11.3% 12.3%
Built between 1990 and 1999 34 4.7% 41.7%
Built between 2000 and 2009 56 7.7% 80.7%
Built between 2010 and 2019 32 4.4% 28.0%
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.

Forest Knolls occupancy rates

Out of the 681 occupied housing units in Forest Knolls, 79.7% are owner-occupied, while 20.3% are lived in by tenants. Meanwhile, 6.2% of all homes on the local market sit vacant.

Occupied housing units
681
-0.9% year-over-year change
Occupancy breakdown
Renter occupied
138
Owner occupied
543
Value Percent YoY
change
Renter occupied 138 20.3% -22.9%
Owner occupied 543 79.7% 6.7%
Unoccupied housing units
6.2%
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.

Forest Knolls housing costs

Median housing costs per month
$2,673/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.

Education in Forest Knolls

Forest Knolls education at a glance

About 5.8% of the population in Forest Knolls went to high school, while 24.2% pursued college studies. Another 11.8% earned an associate degree and 27% hold a bachelor’s. Meanwhile, 27.4% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 46 3.8% -6.1%
High school diploma 70 5.8% -43.1%
College diploma 291 24.2% 3.9%
Associate degree 142 11.8% 13.6%
Bachelor's degree 324 27% -5.3%
Graduate degree 329 27.4% 0.9%
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 Forest Knolls

How much people earn in Forest Knolls

The average annual household income in Forest Knolls was $180,005 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -11.8% change from the previous year. At the same time, the median income stood at $171,914, reflecting a +14.4% shift over the same period.

Average household income in Forest Knolls
$180,005/year
-11.8% year-over-year change
Median household income in Forest Knolls
$171,914/year
14.4% year-over-year change

Forest Knolls income by age

In Forest Knolls, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $146,157. Those with someone between 45 and 64 in charge, often well established professionally, earn $192,262 overall. Overall, 96.5% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $146,157 -0.0%
45 - 64 $192,262 -23.1%
Over 65 $117,756 32.7%
Above poverty level
1,323
Below poverty level
48
Value Percent YoY
change
Above poverty level 1,323 96.5% -0.9%
Below poverty level 48 3.5% -75.6%

Employment in Forest Knolls

Workforce and job types in Forest Knolls

95.7% of the working population are employed in professional or administrative positions, while 4.3% are in hands-on or service-based jobs. Also, 25% run their own businesses, 63.7% are employed by private companies, and 6% work in the public sector.

Workforce demographics

White collar
728
Blue collar
33
Value Percent YoY change
White collar 728 95.7% -4.5%
Blue collar 33 4.3% -45.0%
Employer type
Self employees
25%
Private companies
63.7%
Governmental workers
6%
Not for profit companies
5.3%
Value Percent YoY change
Self employees 190 25% -16.7%
Private companies 485 63.7% 0.0%
Governmental workers 46 6% 64.3%
Not for profit companies 40 5.3% -50.0%

Transportation in Forest Knolls

How people get around in Forest Knolls

Commuting methods vary: 87.3% of residents travel by personal vehicle and 4.5% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 467 87.3% -9.8%
Motorcycle 29 5.4% 26.1%
Bicycle 15 2.8% 114.3%
Walk 24 4.5% -14.3%
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 Forest Knolls by zipcode?

Zipcode Population Number of households Median income Average income
94933 1,033 563 $133,006 $155,543
94938 437 223 $0 $150,184
94963 739 239 $210,823 $234,562

Explore more communities

FAQs about Forest Knolls demographics 

What is the total population of Forest Knolls?

Forest Knolls has a total population of 1,372 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 -10.6% compared to a year ago.

What is the gender ratio in Forest Knolls?

The gender ratio in Forest Knolls is as follows:
  • 57.6% males (791 residents)
  • 42.4% females (581 residents)

What is the median age in Forest Knolls?

The median age in Forest Knolls is 46.1.

What is the age distribution of the population in Forest Knolls?

The age distribution in Forest Knolls is as follows:
  • Under 15: 8.4% (115 residents)
  • Ages 15-24: 11.4% (156 residents)
  • Ages 25-44: 15% (206 residents)
  • Ages 45-64: 28.3% (388 residents)
  • Over 65: 36.9% (506 residents)

What is the racial and ethnic makeup of Forest Knolls?

The racial and ethnic makeup of Forest Knolls is as follows:
  • White: 65.8% (903 residents)
  • Black or African American: 4.2% (58 residents)
  • American Indian and Alaska Native: 2.3% (31 residents)
  • Asian: 6.5% (89 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 20.8% (286 residents)
  • Other: 0.4% (5 residents)

What percentage of the population in Forest Knolls are U.S.-born citizens?

U.S.-born citizens represent 86.2% of the population in Forest Knolls.

How many housing units are there in Forest Knolls?

There are 726 housing units in Forest Knolls, reflecting a +3.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Forest Knolls and what is the average household size?

Forest Knolls has a total of 681 households, with an average of 2 people in each.

What is the median household income in Forest Knolls?

Forest Knolls has a median household income of $171,914, representing a +14.4% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Forest Knolls?

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

Job types:
  • White-collar workers: 95.7% (728 residents)
  • Blue-collar workers: 4.3% (33 residents)

Places of employment:
  • Self-employed: 25% (190 residents)
  • Private companies: 63.7% (485 residents)
  • Governmental workers: 6% (46 residents)
  • Not-for-profit companies: 5.3% (40 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