94583 ZIP Code — San Ramon, CA

Contra Costa County, California

ZIP code 94583 is located in San Ramon, California, within Contra Costa County. It covers approximately 21.24 square miles and serves a population of 39,758 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 925.

About ZIP code 94583

The housing stock consists of a mix of housing types. Most homes were built in the 1970s, giving the area an established character. Median home value is $1,179,800. Owner-occupancy sits near the national average at 73%.

The gap between median ($178,212) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 3% is below the national average.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 33 minutes is near the national average. Remote work is prevalent — 26% of workers work from home.

Educational attainment is high — 63% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 94583 reflects a community defined by a highly educated population and a high rate of remote workers.

39,758

population

21.24

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

94583 ZIP code map

Cities in ZIP code 94583

Below are the cities the US Postal Service accepts for ZIP code 94583. Using any city not on this list may result in mail delivery delays.

City	Status
San Ramon	Preferred

Nearby ZIP codes

94526 Danville (3 mi) 94582 San Ramon (4.9 mi) 94552 Castro Valley (5.3 mi) 94506 Danville (5.7 mi) 94507 Alamo (5.8 mi) 94568 Dublin (6.1 mi) 94546 Castro Valley (6.5 mi) 94556 Moraga (7.3 mi) 94588 Pleasanton (7.7 mi) 94595 Walnut Creek (7.9 mi) 94595 Walnut Creek (7.9 mi) 94541 Hayward (8 mi)

Demographics updated 05/2026

Population
Total population	39,758
Population density	1,872 / sq mi
State FIPS	06
County FIPS	013

Geography
Land area	21.24 sq mi
Water area	0.02 sq mi
Latitude	37.7699
Longitude	-122.0014
Timezone	Pacific (PT)
Area code	925

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	13.1%	23.2%	32.6%
$50k – $100k	14.2%	25.1%	27.7%
$100k – $200k	36.2%	31.3%	26.4%
Over $200k	36.5%	20.4%	13.3%

Demographics & statistics

39,758

Population

1,872

People per sq mi

40.5

Median age

$178,212

Median household income

$72,262

Per capita income

$1,179,800

Median home value

$2,799

Median monthly rent

73.1%

Home ownership

3.2%

Poverty rate

5.2%

Unemployment

10,421

Housing units

63.2%

Bachelor's or higher

Age distribution

Male Female

1,158

Under 5

1,047

1,439

5–9

1,300

1,737

10–14

1,569

1,464

15–19

1,323

1,084

20–24

979

1,834

25–34

1,657

3,121

35–44

2,819

3,309

45–54

2,990

1,634

55–59

1,477

1,061

60–64

959

1,734

65–74

1,567

876

75–84

791

436

85+

393

← Male

Female →

Age summary

Group	Count	%
Under 18	10,185	25.6%
18 and over	29,573	74.4%
65 and over	5,797	14.6%
Median age	40.5 years

Race & ethnicity

White 45.9%

Asian 33.7%

Two or more races 8.6%

Hispanic or Latino 6.6%

Other race 3.2%

Black or African American 1.5%

Native Hawaiian / Pacific Islander 0.3%

American Indian / Alaska Native 0.2%

Group	Count	%
White	19,550	45.9%
Asian	14,350	33.7%
Two or more races	3,669	8.6%
Hispanic or Latino	2,806	6.6%
Other race	1,341	3.2%
Black or African American	626	1.5%
Native Hawaiian / Pacific Islander	146	0.3%
American Indian / Alaska Native	76	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	13.1%	23.2%	32.6%
$50k – $100k	14.2%	25.1%	27.7%
$100k – $200k	36.2%	31.3%	26.4%
Over $200k	36.5%	20.4%	13.3%

Under $10k 1.8%

$10k–$15k 1.0%

$15k–$25k 2.0%

$25k–$35k 3.1%

$35k–$50k 3.4%

$50k–$75k 6.8%

$75k–$100k 5.6%

$100k–$150k 17.0%

$150k–$200k 14.4%

$200k+ 44.9%

Range	% of households
Under $10k	1.8%
$10k–$15k	1.0%
$15k–$25k	2.0%
$25k–$35k	3.1%
$35k–$50k	3.4%
$50k–$75k	6.8%
$75k–$100k	5.6%
$100k–$150k	17.0%
$150k–$200k	14.4%
$200k+	44.9%
Median income	$178,212

Housing

Home values

Under $50k 1.2%

$50k–$100k 0.6%

$100k–$150k 0.7%

$150k–$200k 0.6%

$200k–$300k 0.7%

$300k–$500k 2.0%

$500k–$1M 21.4%

$1M+ 72.7%

Housing overview

Metric	Value
Median home value	$1,179,800
Median rent / month	$2,799
Owner occupied	73.1%
Renter occupied	26.9%
Vacant	2.8%
Single-family detached	69.4%
Large apartment buildings	7.8%
Mobile homes	0.0%
Median rooms	6.2
Avg household size (owned)	3.04

Year built

Era	%
2020 or later	0.3%
2010–2019	4.6%
2000–2009	6.8%
1990–1999	15.0%
1980–1989	24.3%
1970–1979	32.7%
1960–1969	13.2%
1950–1959	2.5%
1940–1949	0.2%
1939 or earlier	0.4%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	9.8%
2 bedrooms	14.0%
3 bedrooms	26.9%
4 bedrooms	39.4%
5+ bedrooms	8.0%

Vehicles per household

Vehicles	% of households
No vehicle	4.1%
1 vehicle	22.8%
2 vehicles	44.8%
3 or more	28.3%

Heating fuel

Fuel type	%
Utility gas	69.0%
Electricity	26.6%
Propane / LP gas	1.6%
Fuel oil	0.1%
Wood	0.4%
Solar	0.7%
No fuel used	1.2%

Households & families

Household type	Count	%
Married-couple family	9,527	69.5%
Cohabiting couple	564	4.1%
Male householder, no spouse	1,472	10.7%
Female householder, no spouse	2,144	15.6%
Households with children under 18	5,945	43.4%
Households with seniors (65+)	3,978	29.0%
Average household size	2.89

Marital status

Status	Male	Female
Never married	28.7%	22.3%
Married	62.5%	64.4%
Separated	1.1%	0.2%
Widowed	1.3%	6.3%
Divorced	6.4%	6.8%

Education

Less than 9th grade 1.7%

Some HS, no diploma 2.3%

HS graduate 11.1%

Some college, no degree 14.4%

Associate's degree 7.3%

Bachelor's degree 36.0%

Graduate / professional 27.2%

Metric	%
HS diploma or higher	96.0%
Bachelor's or higher	63.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	600	5.3%
Kindergarten	580	5.1%
Elementary school	4,656	41.0%
High school	2,844	25.0%
College / grad school	2,676	23.6%

Employment

Industry of employment

Professional & management 23.9%

Education & healthcare 21.6%

Retail trade 9.9%

Manufacturing 9.8%

Finance & real estate 6.5%

Construction 5.8%

Arts, food & hospitality 5.7%

Transportation & utilities 5.1%

Information 3.8%

Public administration 3.3%

Other services 2.9%

Wholesale trade 1.6%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	64.0%
Service	9.0%
Sales & office	17.2%
Natural resources & construction	4.6%
Production & transportation	5.1%

Employment type

Type	%
Private sector	82.8%
Government	11.5%
Self-employed	5.3%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	60.9%
Carpool	5.7%
Public transit	3.9%
Walk	2.1%
Work from home	25.6%
Other means	1.7%
Avg commute (minutes)	32.7

Poverty

All people 3.2%

Under 18 years 2.2%

18 and over 3.5%

Married-couple families 1.1%

Female-led households 7.3%

Income support

Source	% of households
Social Security	25.3%
Retirement income	20.8%
Supplemental Security	1.9%
Cash public assistance	2.2%
Food stamps / SNAP	2.0%

Health indicators

Condition	%
Obesity	24.4%
High blood pressure	22.5%
High cholesterol	27.7%
Diabetes	7.0%
Heart disease	3.8%
Stroke	1.8%
Asthma	8.4%
Arthritis	18.1%
Kidney disease	2.0%
Pulmonary disease	3.6%
Cancer	5.6%

Behavior / access	%
Smoking	7.9%
Binge drinking	18.6%
No physical activity	13.7%
Less than 7 hrs sleep	28.7%
Depression	15.2%
Fair or poor health	8.3%
Poor mental health	11.5%
Poor physical health	6.7%
No health insurance	6.4%
Visited doctor (checkup)	64.4%
Visited dentist	76.4%
Cholesterol screening	93.1%
Teeth loss	5.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,088	3.7%

Disability	%
Any disability	7.0%
Under 18	4.5%
18–64 years	4.3%
65 and over	22.8%

Health insurance coverage

Type	%
Private insurance	89.1%
Public insurance	19.3%
No insurance	1.6%
Uninsured under 19	0.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	37,553	94.5%
Spanish	3,302	8.8%
Other Indo-European	157	0.4%
Asian & Pacific Islander	767	2.0%
Other languages	2,210	5.9%

Place of birth & citizenship

Origin	Count	%
Native born (US)	28,160	70.8%
Born in same state	27,577	69.4%
Born in different state	20,560	51.7%
Foreign born	583	1.5%
Naturalized citizen	11,598	29.2%
Not a US citizen	6,289	54.2%

Ancestry

Ancestry	Count	%
French	3,666	9.2%
Italian	2,887	7.3%
Arab	869	2.2%
Polish	426	1.1%
Dutch	371	0.9%

Ancestry	Count	%
English	283	0.7%
Irish	207	0.5%
Norwegian	91	0.2%
German	52	0.1%

Technology access

Metric	% of households
Computer access	34.5%
Internet access	98.5%

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

Frequently asked questions about ZIP code 94583

What city is ZIP code 94583 in?

ZIP code 94583 is primarily assigned to San Ramon, California.

What county is ZIP code 94583 in?

ZIP code 94583 falls within Contra Costa County, California.

How educated is the population of ZIP code 94583?

63% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the median household income in ZIP code 94583?

The median household income in ZIP code 94583 is $178,212, above the national median of ~$75,000.

What is the typical home value in ZIP code 94583?

The median home value in ZIP code 94583 is $1,179,800.

What is the population of ZIP code 94583?

ZIP code 94583 has an estimated population of 39,758 residents, with a density of 1,872 people per square mile.

What timezone is ZIP code 94583 in?

ZIP code 94583 observes the PST timezone.