Nicasio ZIP Code List — Marin County, CA

There is one unique ZIP code in Nicasio, California and it is 94946. Area code: 415/628.

ZIP codes

37.22

sq mi land

1.37

sq mi water

415/628

area code

Nicasio, CA ZIP code map

About Nicasio, CA

Nicasio, California, is a small, charming community located in Marin County. Known for its picturesque landscapes and tranquil atmosphere, this quaint town provides a perfect escape from the hustle and bustle of urban life. Surrounded by rolling hills and open spaces, Nicasio is a hidden gem in Northern California.

Location & geography

Nicasio is nestled in Marin County, about 15 miles northwest of San Rafael and approximately 20 miles from the Pacific Ocean. The town features a total land area of 37.22 square miles with an additional 1.37 square miles of water, creating a diverse natural habitat. It is characterized by its rural terrain, with scenic views and a majority of open space, making it ideal for outdoor activities.

Community & economy

The community of Nicasio is known for its close-knit and friendly atmosphere, with a population that embraces a slower pace of life. Many residents work in agriculture, tourism, and local businesses that cater to both locals and visitors. Daily life in Nicasio often involves outdoor activities, community gatherings, and appreciation of the area's natural beauty.

Transportation

Nicasio is accessible via various local roads, with nearby Highway 101 offering a convenient route to larger urban areas. The closest major airport is San Francisco International Airport, which is about 32 miles away. For public transit, local bus services provide limited connectivity, but most residents rely on personal vehicles for transportation.

History

Nicasio was founded in the mid-19th century and has maintained much of its rural charm over the years. Initially, agriculture and dairy farming were key industries that supported the town's growth, reflecting the area's fertile landscape. The town is also significant in California history as the location of the historic Nicasio Valley Cheese Company, which remains a popular local artisan producer.

Did you know?

One little-known fact about Nicasio is that it is home to the Nicasio Valley, which provides excellent opportunities for wine country exploration and farming. Additionally, the town features the iconic Nicasio School, which has been serving the community for over a century and reflects the area's commitment to education.

ZIP codes for Nicasio, CA (1)

ZIP code	City	County	Map
94946	Nicasio	Marin	View map

Demographics & statistics

673

Population

55.5

Median age

$125,179

Median household income

$109,320

Per capita income

$2,000,000

Median home value

$2,025

Median monthly rent

75.8%

Home ownership

5.1%

Poverty rate

4.1%

Unemployment

243

Housing units

54.1%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	75	11.1%
18 and over	598	88.9%
65 and over	225	33.4%
Median age	55.5 years

Race & ethnicity

White 87.2%

Hispanic or Latino 3.3%

Asian 2.7%

Black or African American 2.2%

Two or more races 2.2%

Other race 2.2%

American Indian / Alaska Native 0.3%

Group	Count	%
White	607	87.2%
Hispanic or Latino	23	3.3%
Asian	19	2.7%
Black or African American	15	2.2%
Two or more races	15	2.2%
Other race	15	2.2%
American Indian / Alaska Native	2	0.3%

Household income

Under $10k 0.7%

$10k–$15k 1.7%

$15k–$25k 3.1%

$25k–$35k 1.0%

$35k–$50k 14.7%

$50k–$75k 7.8%

$75k–$100k 11.3%

$100k–$150k 15.4%

$150k–$200k 8.2%

$200k+ 36.2%

Range	% of households
Under $10k	0.7%
$10k–$15k	1.7%
$15k–$25k	3.1%
$25k–$35k	1.0%
$35k–$50k	14.7%
$50k–$75k	7.8%
$75k–$100k	11.3%
$100k–$150k	15.4%
$150k–$200k	8.2%
$200k+	36.2%
Median income	$125,179

Housing

Home values

Under $50k 0.9%

$500k–$1M 10.4%

$1M+ 88.7%

Housing overview

Metric	Value
Median home value	$2,000,000
Median rent / month	$2,025
Owner occupied	75.8%
Renter occupied	24.2%
Vacant	6.7%
Single-family detached	93.9%
Large apartment buildings	1.0%
Mobile homes	1.6%
Median rooms	5.5
Avg household size (owned)	2.45

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	7.0%
1990–1999	15.9%
1980–1989	17.8%
1970–1979	29.0%
1960–1969	8.0%
1950–1959	2.9%
1940–1949	2.2%
1939 or earlier	17.2%

Bedrooms

Size	% of units
No bedroom (studio)	2.2%
1 bedroom	15.0%
2 bedrooms	26.8%
3 bedrooms	31.5%
4 bedrooms	14.3%
5+ bedrooms	10.2%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	17.1%
2 vehicles	47.8%
3 or more	35.2%

Heating fuel

Fuel type	%
Utility gas	4.1%
Electricity	15.7%
Propane / LP gas	66.9%
Fuel oil	1.0%
Wood	9.6%
Solar	1.7%

Households & families

Household type	Count	%
Married-couple family	148	50.5%
Cohabiting couple	26	8.9%
Male householder, no spouse	40	13.7%
Female householder, no spouse	79	27.0%
Households with children under 18	44	15.0%
Households with seniors (65+)	160	54.6%
Average household size	2.30

Marital status

Status	Male	Female
Never married	33.6%	23.3%
Married	51.3%	48.5%
Separated	1.3%	2.6%
Widowed	1.6%	3.2%
Divorced	12.2%	22.3%

Education

Less than 9th grade 0.7%

Some HS, no diploma 1.4%

HS graduate 12.8%

Some college, no degree 27.2%

Associate's degree 3.7%

Bachelor's degree 26.0%

Graduate / professional 28.1%

Metric	%
HS diploma or higher	97.9%
Bachelor's or higher	54.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	43	40.2%
High school	38	35.5%
College / grad school	26	24.3%

Employment

Industry of employment

Professional & management 22.9%

Education & healthcare 17.3%

Arts, food & hospitality 13.0%

Agriculture & mining 11.2%

Retail trade 8.1%

Construction 6.1%

Finance & real estate 4.6%

Information 4.3%

Wholesale trade 2.8%

Public administration 2.8%

Other services 2.5%

Transportation & utilities 2.3%

Manufacturing 2.0%

Occupation

Category	%
Management, business & arts	58.0%
Service	16.8%
Sales & office	14.8%
Natural resources & construction	6.6%
Production & transportation	3.8%

Employment type

Type	%
Private sector	66.2%
Government	7.1%
Self-employed	26.2%
Unpaid family workers	0.5%

Commute

Method	%
Drive alone	63.7%
Carpool	3.0%
Public transit	0.8%
Walk	8.1%
Other means	1.5%
Avg commute (minutes)	38.2

Poverty

All people 5.1%

Under 18 years 0.0%

18 and over 5.7%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	47.8%
Retirement income	22.2%
Supplemental Security	8.9%
Cash public assistance	2.0%
Food stamps / SNAP	2.4%

Health indicators

Condition	%
High blood pressure	28.1%
High cholesterol	32.4%
Heart disease	5.9%
Stroke	2.6%
Asthma	9.7%
Arthritis	24.4%
Kidney disease	2.7%
Pulmonary disease	6.0%
Cancer	7.3%

Behavior / access	%
Binge drinking	18.0%
No physical activity	15.1%
Less than 7 hrs sleep	27.7%
Fair or poor health	11.2%
Poor mental health	12.8%
Poor physical health	9.3%
No health insurance	7.1%
Visited doctor (checkup)	66.8%
Visited dentist	72.4%
Cholesterol screening	94.0%
Teeth loss	7.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	22	3.7%

Disability	%
Any disability	11.6%
Under 18	8.0%
18–64 years	6.8%
65 and over	20.4%

Health insurance coverage

Type	%
Private insurance	71.8%
Public insurance	49.1%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	662	98.4%
Spanish	27	4.1%
Other Indo-European	21	3.2%
Asian & Pacific Islander	0	0.0%
Other languages	6	0.9%

Place of birth & citizenship

Origin	Count	%
Native born (US)	591	87.8%
Born in same state	582	86.5%
Born in different state	377	56.0%
Foreign born	9	1.3%
Naturalized citizen	82	12.2%
Not a US citizen	64	78.0%

Ancestry

Ancestry	Count	%
French	62	9.2%
Italian	61	9.1%
Polish	11	1.6%
Norwegian	6	0.9%

Ancestry	Count	%
Dutch	5	0.7%
Arab	5	0.7%
Irish	2	0.3%
English	2	0.3%

Technology access

Metric	% of households
Computer access	43.5%
Internet access	96.2%

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

Frequently asked questions

What is the ZIP code for Nicasio, CA?

Nicasio, CA has one ZIP code: 94946.

What is the main ZIP code for Nicasio, CA?

The primary ZIP code for Nicasio, CA is 94946. The city uses area code 415 or 628 for phone service.

What county is Nicasio, CA in?

Nicasio is located in Marin County, California.

How many ZIP codes are in Nicasio, CA?

Nicasio, CA has 1 ZIP code.

What is the ZIP code for Nicasio, the unincorporated community in Marin County known for its rural character and historic church?

Nicasio uses the ZIP code 94946, which serves this small pastoral community located in western Marin County.

If I'm sending mail to a business or residence in Nicasio near the Nicasio Reservoir area, what ZIP code should I use?

All addresses in Nicasio, including those near Nicasio Reservoir, use the ZIP code 94946.