94904 ZIP Code — Greenbrae, CA

Marin County, California

ZIP code 94904 is located in Greenbrae, California, within Marin County. It covers approximately 4.95 square miles and serves a population of 13,132 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 415.

About ZIP code 94904

The housing stock consists of a mix of housing types. Most homes were built in the 1960s, giving the area an established character. Median home value is $1,939,900. Owner-occupancy sits near the national average at 63%.

The gap between median ($158,338) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 5% is below the national average. 35% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 30 minutes is near the national average. Remote work is prevalent — 33% of workers work from home.

Educational attainment is high — 72% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 94904 reflects a community defined by a highly educated population, a high rate of remote workers, and a significant Social Security-dependent population.

13,132

population

4.95

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

94904 ZIP code map

Cities in ZIP code 94904

Below are the cities the US Postal Service accepts for ZIP code 94904. Using any city not on this list may result in mail delivery delays.

City	Status
Greenbrae	Acceptable
Greenbrae	Acceptable

Demographics updated 06/2026

Population
Total population	13,132
Population density	2,653 / sq mi
State FIPS	06
County FIPS	041

Geography
Land area	4.95 sq mi
Water area	0.10 sq mi
Latitude	37.9499
Longitude	-122.5407
Timezone	Pacific (PT)
Area code	415

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.2%	21.4%	32.6%
$50k – $100k	16.4%	21.0%	27.7%
$100k – $200k	21.4%	27.8%	26.4%
Over $200k	39.1%	29.8%	13.3%

Demographics & statistics

13,132

Population

2,653

People per sq mi

50.5

Median age

$158,338

Median household income

$117,910

Per capita income

$1,939,900

Median home value

$2,557

Median monthly rent

62.9%

Home ownership

5.4%

Poverty rate

3.8%

Unemployment

3,802

Housing units

71.5%

Bachelor's or higher

Age distribution

Male Female

311

Under 5

377

241

5–9

292

463

10–14

560

329

15–19

398

183

20–24

221

346

25–34

419

527

35–44

637

1,010

45–54

1,222

524

55–59

634

461

60–64

559

689

65–74

835

545

75–84

660

312

85+

377

← Male

Female →

Age summary

Group	Count	%
Under 18	2,725	20.8%
18 and over	10,407	79.2%
65 and over	3,418	26.0%
Median age	50.5 years

Race & ethnicity

White 74%

Hispanic or Latino 7.6%

Asian 7.2%

Two or more races 6.4%

Other race 4%

Black or African American 0.6%

American Indian / Alaska Native 0.1%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	10,517	74%
Hispanic or Latino	1,074	7.6%
Asian	1,022	7.2%
Two or more races	913	6.4%
Other race	563	4%
Black or African American	85	0.6%
American Indian / Alaska Native	18	0.1%
Native Hawaiian / Pacific Islander	14	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.2%	21.4%	32.6%
$50k – $100k	16.4%	21.0%	27.7%
$100k – $200k	21.4%	27.8%	26.4%
Over $200k	39.1%	29.8%	13.3%

Under $10k 2.5%

$10k–$15k 0.8%

$15k–$25k 3.0%

$25k–$35k 4.2%

$35k–$50k 8.3%

$50k–$75k 8.5%

$75k–$100k 8.9%

$100k–$150k 10.9%

$150k–$200k 10.2%

$200k+ 42.7%

Range	% of households
Under $10k	2.5%
$10k–$15k	0.8%
$15k–$25k	3.0%
$25k–$35k	4.2%
$35k–$50k	8.3%
$50k–$75k	8.5%
$75k–$100k	8.9%
$100k–$150k	10.9%
$150k–$200k	10.2%
$200k+	42.7%
Median income	$158,338

Housing

Home values

Under $50k 2.9%

$100k–$150k 1.1%

$150k–$200k 0.3%

$200k–$300k 0.9%

$300k–$500k 2.6%

$500k–$1M 14.5%

$1M+ 77.8%

Housing overview

Metric	Value
Median home value	$1,939,900
Median rent / month	$2,557
Owner occupied	62.9%
Renter occupied	37.1%
Vacant	4.0%
Single-family detached	58.9%
Large apartment buildings	11.5%
Mobile homes	1.6%
Median rooms	5.7
Avg household size (owned)	2.48

Year built

Era	%
2020 or later	0.1%
2010–2019	2.5%
2000–2009	2.7%
1990–1999	4.6%
1980–1989	5.4%
1970–1979	16.6%
1960–1969	25.9%
1950–1959	25.8%
1940–1949	9.1%
1939 or earlier	7.3%

Bedrooms

Size	% of units
No bedroom (studio)	6.5%
1 bedroom	14.3%
2 bedrooms	20.2%
3 bedrooms	31.1%
4 bedrooms	18.7%
5+ bedrooms	9.2%

Vehicles per household

Vehicles	% of households
No vehicle	6.4%
1 vehicle	34.5%
2 vehicles	39.8%
3 or more	19.3%

Heating fuel

Fuel type	%
Utility gas	70.1%
Electricity	24.4%
Propane / LP gas	2.8%
Solar	1.6%
No fuel used	1.1%

Households & families

Household type	Count	%
Married-couple family	2,920	51.5%
Cohabiting couple	197	3.5%
Male householder, no spouse	670	11.8%
Female householder, no spouse	1,888	33.3%
Households with children under 18	1,544	27.2%
Households with seniors (65+)	2,392	42.1%
Average household size	2.29

Marital status

Status	Male	Female
Never married	20.7%	24.3%
Married	65.3%	48.1%
Separated	0.7%	1.2%
Widowed	3.6%	9.5%
Divorced	9.7%	16.9%

Education

Less than 9th grade 1.3%

Some HS, no diploma 0.6%

HS graduate 7.9%

Some college, no degree 12.9%

Associate's degree 5.9%

Bachelor's degree 37.9%

Graduate / professional 33.7%

Metric	%
HS diploma or higher	98.2%
Bachelor's or higher	71.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	175	5.5%
Kindergarten	99	3.1%
Elementary school	1,252	39.2%
High school	742	23.2%
College / grad school	928	29.0%

Employment

Industry of employment

Education & healthcare 26.9%

Professional & management 18.7%

Finance & real estate 14.3%

Arts, food & hospitality 8.9%

Retail trade 6.3%

Other services 6.1%

Manufacturing 4.3%

Construction 3.6%

Information 3.6%

Transportation & utilities 3.3%

Public administration 2.4%

Wholesale trade 1.6%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	65.8%
Service	10.9%
Sales & office	19.1%
Natural resources & construction	1.5%
Production & transportation	2.6%

Employment type

Type	%
Private sector	80.0%
Government	7.9%
Self-employed	12.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	52.2%
Carpool	5.9%
Public transit	5.9%
Walk	1.8%
Work from home	32.5%
Other means	1.7%
Avg commute (minutes)	29.7

Poverty

All people 5.4%

Under 18 years 3.8%

18 and over 5.8%

Married-couple families 0.5%

Female-led households 10.5%

Income support

Source	% of households
Social Security	34.9%
Retirement income	30.2%
Supplemental Security	1.6%
Cash public assistance	1.0%
Food stamps / SNAP	2.5%

Health indicators

Condition	%
Obesity	22.7%
High blood pressure	28.8%
High cholesterol	33.7%
Diabetes	8.8%
Heart disease	6.3%
Stroke	2.7%
Asthma	9.2%
Arthritis	25.9%
Kidney disease	2.9%
Pulmonary disease	5.3%
Cancer	9.2%

Behavior / access	%
Smoking	7.1%
Binge drinking	15.5%
No physical activity	13.5%
Less than 7 hrs sleep	25.0%
Depression	15.8%
Fair or poor health	9.7%
Poor mental health	10.9%
Poor physical health	8.2%
No health insurance	5.5%
Visited doctor (checkup)	70.2%
Visited dentist	77.3%
Cholesterol screening	95.5%
Teeth loss	5.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	485	4.7%

Disability	%
Any disability	10.1%
Under 18	1.6%
18–64 years	5.4%
65 and over	27.0%

Health insurance coverage

Type	%
Private insurance	83.2%
Public insurance	31.2%
No insurance	1.9%
Uninsured under 19	0.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	12,444	94.8%
Spanish	758	6.1%
Other Indo-European	199	1.6%
Asian & Pacific Islander	244	2.0%
Other languages	263	2.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	10,980	83.6%
Born in same state	10,650	81.1%
Born in different state	5,837	44.4%
Foreign born	330	2.5%
Naturalized citizen	2,152	16.4%
Not a US citizen	1,216	56.5%

Ancestry

Ancestry	Count	%
French	2,085	15.9%
Italian	1,932	14.7%
Arab	347	2.6%
Dutch	203	1.5%

Ancestry	Count	%
Polish	190	1.4%
Irish	175	1.3%
English	114	0.9%
Norwegian	41	0.3%

Technology access

Metric	% of households
Computer access	43.2%
Internet access	95.8%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 94904

What city is ZIP code 94904 in?

ZIP code 94904 is primarily assigned to Greenbrae, California.

What county is ZIP code 94904 in?

ZIP code 94904 falls within Marin County, California.

How educated is the population of ZIP code 94904?

72% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 94904 have an older population?

26% of residents in ZIP code 94904 are 65 or older, above the national average of ~17%.

What is the median household income in ZIP code 94904?

The median household income in ZIP code 94904 is $158,338, above the national median of ~$75,000.

What is the typical home value in ZIP code 94904?

The median home value in ZIP code 94904 is $1,939,900.

What timezone is ZIP code 94904 in?

ZIP code 94904 observes the PST timezone.