Zip Code 94583
San Ramon, California — Contra Costa County
📍 ZIP code 94583 is in San Ramon, Contra Costa County, California.
ZIP code 94583 is located in San Ramon, Contra Costa County, California. It is a zip code in the Pacific (PST/PDT) Time Zone with an estimated population of 39,418. The area code for ZIP code 94583 is 408.
Quick Answer
Zip code 94583 is in San Ramon, California (Contra Costa County). It has a population of 39,418, median household income of $184,033, and median home value of $1,234,400.
Population
39,418
Income
$184,033
Home Value
$1,234,400
Climate
83°F / 42°F
About Zip Code 94583
Zip code 94583 is located in San Ramon, California, within Contra Costa County. Home to approximately 39,418 residents, this area sits at an elevation of 693 ft and falls within the Pacific (PST/PDT) timezone. The local area code is 408.
The median household income is $184,033 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $1,234,400, and the cost of living index is 250 (150% above the national average of 100).
Summers average a high of 83°F while winters drop to 42°F. The area receives about 26 in of rain and 1 in of snow annually. The zip code covers 14.9 square miles of land area.
Key Statistics
39,418
$184,033
$1,234,400
Pacific (PST/PDT)
408
693 ft
14.9 sq mi
40.6
14,208
Advertisement
Compare With Nearby Zip Codes
| Metric | 94583 | 94552 | 94526 | 94568 | 94506 | 94546 |
|---|---|---|---|---|---|---|
| City | San Ramon, CA | Castro Valley, CA | Danville, CA | Dublin, CA | Danville, CA | Castro Valley, CA |
| Population | 39,418 | 14,359 | 33,085 | 70,542 | 27,261 | 45,848 |
| Median Income | $184,033 | $205,170 | $216,974 | $205,046 | $250,001 | $125,780 |
| Home Value | $1,234,400 | $1,286,300 | $1,588,000 | $1,224,100 | $1,789,600 | $976,300 |
| Cost of Living | 250 | 250 | 250 | 250 | 250 | 250 |
| Median Age | 40.6 | 48.6 | 45.9 | 37.3 | 45.9 | 42.1 |
Cost of Living
100 = National Average. San Ramon's cost of living is 150% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
6.7x
Demographics
Zip code 94583 has a population of 39,418 people with a median age of 40.6. There are 14,208 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
San Ramon (94583) population trend from 2010 to 2024
↓ -33.6%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
83°F
42°F
26 in
1 in
San Ramon experiences warm summers with average highs around 83°F. Winters are mild with lows averaging 42°F. The area receives about 1 in of snow per year.
Advertisement
Housing & Economy
Median Home Value
$1,234,400
Median Household Income
$184,033
With 14,208 housing units across 14.9 square miles, 94583 has a housing density of 954 units per square mile. The home price-to-income ratio is 6.7x.
Location & Geography
Latitude
37.7555°
Longitude
-121.9730°
Land Area
14.9 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 94583 (San Ramon, CA) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 94583's $184,033. A way to compare San Ramon to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 94583 (San Ramon, CA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
Explore California
Popular "Near Me" Searches
Advertisement
People Also Ask
What zip code is San Ramon, California?
San Ramon, California uses zip code 94583.
What county is zip code 94583 in?
Zip code 94583 is located in Contra Costa County, California.
What is the population of zip code 94583?
The population of zip code 94583 is 39,418 with a median age of 40.6.
Is 94583 in San Ramon, California?
Yes, zip code 94583 is in San Ramon, Contra Costa County, California. The area code is 408.
Frequently Asked Questions
What city is zip code 94583 in?
Zip code 94583 is in San Ramon, California. It is part of Contra Costa County and uses the Pacific (PST/PDT) timezone.
What is zip code 94583?
Zip code 94583 is a U.S. postal code in San Ramon, California (Contra Costa County). It has a population of 39,418 and covers 14.9 square miles.
What is the population of zip code 94583?
The population of zip code 94583 (San Ramon, CA) is 39,418 with a median age of 40.6. There are approximately 14,208 housing units in this area.
What is the median income in zip code 94583?
The median household income in zip code 94583 (San Ramon, CA) is $184,033 per year. The cost of living index is 250 (100 = national average).
What is the average home price in zip code 94583?
The median home value in zip code 94583 (San Ramon, CA) is $1,234,400. The cost of living index is 250 compared to the national average of 100.
What county is zip code 94583 in?
Zip code 94583 is located in Contra Costa County, California. The primary city is San Ramon.
What is the area code for zip code 94583?
Zip code 94583 in San Ramon, CA uses area code 408. It is located in the Pacific (PST/PDT) timezone.
Is zip code 94583 a good place to live?
Zip code 94583 (San Ramon, CA) has a cost of living index of 250 (100 = national average), a median household income of $184,033, and median home values of $1,234,400. The median age is 40.6. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 94583?
The cost of living index for zip code 94583 (San Ramon, CA) is 250, where 100 represents the national average. This area is above the national average. Median home value: $1,234,400.
What schools serve zip code 94583?
Zip code 94583 in San Ramon, California is served by the local school district of Contra Costa County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
People Also Searched For
Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.