Martinez ZIP Code List — Contra Costa County, CA

There is one unique ZIP code in Martinez, California and it is 94553. Area code: 925.

ZIP codes

61.64

sq mi land

3.26

sq mi water

925

area code

Martinez, CA ZIP code map

About Martinez, CA

Martinez, California, is a charming city located in the heart of Contra Costa County. Known for its rich history and vibrant community, Martinez offers a unique blend of suburban comfort and easy access to the natural beauty of the San Francisco Bay Area. The city features a range of amenities and recreational activities, making it a desirable place to live and visit.

Location & geography

Martinez is situated about 30 miles northeast of San Francisco, making it an ideal location for commuters who work in the Bay Area. The city is bordered by a number of other cities, including Pleasant Hill, which is approximately 5 miles to the south, and Concord, located about 6 miles to the east. The land area of Martinez consists of 123.27 square miles, with a water area of 6.52 square miles, showcasing a mix of uplands and waterfront along the Carquinez Strait.

Community & economy

The community of Martinez boasts a friendly and welcoming atmosphere, with many local events and gatherings that embody the city's small-town charm. The economy is supported by a diverse range of industries including retail, healthcare, and education, providing residents with various employment opportunities. Daily life in Martinez is enriched by its beautiful parks, historic downtown area, and cultural attractions that foster a strong sense of community.

Transportation

Transportation in Martinez is facilitated by major highways such as Interstate 680, providing easy access to neighboring cities and the wider Bay Area. The city is also served by the Martinez Amtrak station, connecting residents to regional rail services, while the nearest airports include the Oakland International Airport and the Buchanan Field Airport, both within a reasonable driving distance. Public transit options help residents navigate everyday travel needs.

History

Martinez was founded in the mid-19th century and has a storied past tied to the development of the regional economy, particularly through industries like shipbuilding and agriculture. The city played a crucial role during the Gold Rush, serving as a logistical center for supplies and services. Notable events in its history include the establishment of the Martinez courthouse in 1850, which marks the evolution of local governance.

Did you know?

A surprising fact about Martinez is that it was once home to the infamous John Muir, a naturalist and environmentalist who significantly influenced the conservation movement in the United States. Additionally, Martinez is known for its local culinary specialties, particularly its almond-flavored olive oil, which reflects its agricultural heritage.

ZIP codes for Martinez, CA (1)

ZIP code	City	County	Map
94553	Martinez	Contra Costa	View map

Demographics & statistics

49,062

Population

42.2

Median age

$118,704

Median household income

$58,883

Per capita income

$723,400

Median home value

$2,170

Median monthly rent

72.0%

Home ownership

6.4%

Poverty rate

5.2%

Unemployment

14,581

Housing units

41.6%

Bachelor's or higher

Age distribution

Male Female

1,578

Under 5

1,581

1,438

5–9

1,441

1,324

10–14

1,326

1,044

15–19

1,046

1,284

20–24

1,287

2,828

25–34

2,833

3,831

35–44

3,838

3,421

45–54

3,428

1,801

55–59

1,805

1,780

60–64

1,784

2,440

65–74

2,445

1,209

75–84

1,212

528

85+

530

← Male

Female →

Age summary

Group	Count	%
Under 18	10,043	20.5%
18 and over	39,019	79.5%
65 and over	8,364	17.0%
Median age	42.2 years

Race & ethnicity

White 59%

Two or more races 13.3%

Hispanic or Latino 10.4%

Asian 9.6%

Other race 3.7%

Black or African American 3.3%

American Indian / Alaska Native 0.8%

Group	Count	%
White	32,314	59%
Two or more races	7,260	13.3%
Hispanic or Latino	5,681	10.4%
Asian	5,232	9.6%
Other race	2,014	3.7%
Black or African American	1,803	3.3%
American Indian / Alaska Native	439	0.8%

Household income

Under $10k 4.1%

$10k–$15k 1.7%

$15k–$25k 3.2%

$25k–$35k 3.7%

$35k–$50k 6.0%

$50k–$75k 10.3%

$75k–$100k 11.9%

$100k–$150k 20.1%

$150k–$200k 15.2%

$200k+ 23.8%

Range	% of households
Under $10k	4.1%
$10k–$15k	1.7%
$15k–$25k	3.2%
$25k–$35k	3.7%
$35k–$50k	6.0%
$50k–$75k	10.3%
$75k–$100k	11.9%
$100k–$150k	20.1%
$150k–$200k	15.2%
$200k+	23.8%
Median income	$118,704

Housing

Home values

Under $50k 1.7%

$50k–$100k 3.5%

$100k–$150k 1.5%

$150k–$200k 0.5%

$200k–$300k 3.1%

$300k–$500k 11.3%

$500k–$1M 62.5%

$1M+ 16.1%

Housing overview

Metric	Value
Median home value	$723,400
Median rent / month	$2,170
Owner occupied	72.0%
Renter occupied	28.0%
Vacant	3.9%
Single-family detached	63.7%
Large apartment buildings	4.9%
Mobile homes	4.8%
Median rooms	5.7
Avg household size (owned)	2.61

Year built

Era	%
2020 or later	0.1%
2010–2019	1.9%
2000–2009	5.4%
1990–1999	10.0%
1980–1989	22.1%
1970–1979	21.9%
1960–1969	12.7%
1950–1959	10.8%
1940–1949	4.8%
1939 or earlier	10.3%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	8.2%
2 bedrooms	24.4%
3 bedrooms	40.2%
4 bedrooms	21.3%
5+ bedrooms	4.3%

Vehicles per household

Vehicles	% of households
No vehicle	2.9%
1 vehicle	29.2%
2 vehicles	41.5%
3 or more	26.4%

Heating fuel

Fuel type	%
Utility gas	69.8%
Electricity	25.1%
Propane / LP gas	2.0%
Wood	0.9%
Solar	0.9%
No fuel used	1.0%

Households & families

Household type	Count	%
Married-couple family	9,753	50.9%
Cohabiting couple	1,654	8.6%
Male householder, no spouse	2,839	14.8%
Female householder, no spouse	4,928	25.7%
Households with children under 18	6,104	31.8%
Households with seniors (65+)	5,912	30.8%
Average household size	2.52

Marital status

Status	Male	Female
Never married	34.1%	25.8%
Married	53.6%	49.9%
Separated	1.9%	1.4%
Widowed	1.8%	6.6%
Divorced	8.6%	16.3%

Education

Less than 9th grade 1.8%

Some HS, no diploma 4.3%

HS graduate 18.1%

Some college, no degree 23.3%

Associate's degree 10.8%

Bachelor's degree 27.8%

Graduate / professional 13.9%

Metric	%
HS diploma or higher	93.9%
Bachelor's or higher	41.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	1,271	11.9%
Kindergarten	608	5.7%
Elementary school	4,186	39.0%
High school	1,889	17.6%
College / grad school	2,766	25.8%

Employment

Industry of employment

Education & healthcare 23.7%

Professional & management 15.0%

Retail trade 11.4%

Construction 9.2%

Public administration 7.8%

Finance & real estate 7.0%

Arts, food & hospitality 5.9%

Manufacturing 5.4%

Other services 5.3%

Transportation & utilities 4.2%

Information 2.8%

Wholesale trade 2.0%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	48.4%
Service	14.5%
Sales & office	20.7%
Natural resources & construction	7.2%
Production & transportation	9.2%

Employment type

Type	%
Private sector	74.4%
Government	19.7%
Self-employed	5.8%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	66.8%
Carpool	8.6%
Public transit	4.5%
Walk	2.7%
Other means	1.8%
Avg commute (minutes)	31.1

Poverty

All people 6.4%

Under 18 years 3.9%

18 and over 7.0%

Married-couple families 2.1%

Female-led households 12.9%

Income support

Source	% of households
Social Security	27.4%
Retirement income	26.8%
Supplemental Security	4.7%
Cash public assistance	4.1%
Food stamps / SNAP	6.0%

Health indicators

Condition	%
High blood pressure	25.8%
High cholesterol	29.3%
Heart disease	4.9%
Stroke	2.3%
Asthma	9.6%
Arthritis	21.7%
Kidney disease	2.4%
Pulmonary disease	5.2%
Cancer	6.2%

Behavior / access	%
Binge drinking	19.5%
No physical activity	16.8%
Less than 7 hrs sleep	30.4%
Fair or poor health	11.5%
Poor mental health	13.7%
Poor physical health	8.9%
No health insurance	8.7%
Visited doctor (checkup)	65.0%
Visited dentist	71.8%
Cholesterol screening	92.0%
Teeth loss	7.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	2,630	6.7%

Disability	%
Any disability	13.1%
Under 18	4.7%
18–64 years	10.6%
65 and over	32.9%

Health insurance coverage

Type	%
Private insurance	81.1%
Public insurance	29.2%
Uninsured under 19	3.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	45,903	93.6%
Spanish	2,200	4.8%
Other Indo-European	875	1.9%
Asian & Pacific Islander	442	1.0%
Other languages	873	1.9%

Place of birth & citizenship

Origin	Count	%
Native born (US)	42,630	86.9%
Born in same state	41,919	85.4%
Born in different state	33,314	67.9%
Foreign born	711	1.4%
Naturalized citizen	6,432	13.1%
Not a US citizen	4,503	70.0%

Ancestry

Ancestry	Count	%
Italian	6,670	13.6%
French	6,287	12.8%
Arab	2,019	4.1%
Polish	1,103	2.2%
English	540	1.1%

Ancestry	Count	%
Dutch	211	0.4%
Irish	174	0.4%
Norwegian	101	0.2%
German	91	0.2%

Technology access

Metric	% of households
Computer access	39.1%
Internet access	98.4%

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

Frequently asked questions

What is the ZIP code for Martinez, CA?

Martinez, CA has one ZIP code: 94553.

What is the main ZIP code for Martinez, CA?

The primary ZIP code for Martinez, CA is 94553. The city uses area code 925 for phone service.

What county is Martinez, CA in?

Martinez is located in Contra Costa County, California.

How many ZIP codes are in Martinez, CA?

Martinez, CA has 1 ZIP code.

What ZIP code covers downtown Martinez and the waterfront area along the Carquinez Strait?

Downtown Martinez and the waterfront district are located in ZIP code 94553, which encompasses the historic downtown area and the scenic Carquinez Strait waterfront.

What is the ZIP code for the Martinez Refinery area and surrounding industrial district?

The Martinez Refinery and its surrounding industrial areas are located in ZIP code 94553, which covers the city's important petrochemical and refining operations along the waterfront.