Zip Code 94070
San Carlos, California — San Mateo County
📍 ZIP code 94070 is in San Carlos, San Mateo County, California.
ZIP code 94070 is located in San Carlos, San Mateo County, California. It is a zip code in the Pacific (PST/PDT) Time Zone with an estimated population of 30,696. The area code for ZIP code 94070 is 408.
Quick Answer
Zip code 94070 is in San Carlos, California (San Mateo County). It has a population of 30,696, median household income of $235,373, and median home value of $2M+.
Population
30,696
Income
$235,373
Home Value
$2M+
Climate
81°F / 41°F
About Zip Code 94070
Zip code 94070 is located in San Carlos, California, within San Mateo County. Home to approximately 30,696 residents, this area sits at an elevation of 337 ft and falls within the Pacific (PST/PDT) timezone. The local area code is 408.
The median household income is $235,373 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $2M+, and the cost of living index is 250 (150% above the national average of 100).
Summers average a high of 81°F while winters drop to 41°F. The area receives about 19 in of rain annually. The zip code covers 6.1 square miles of land area.
Key Statistics
30,696
$235,373
$2M+
Pacific (PST/PDT)
408
337 ft
6.1 sq mi
41.6
11,958
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Compare With Nearby Zip Codes
| Metric | 94070 | 94002 | 94065 | 94061 | 94403 | 94404 |
|---|---|---|---|---|---|---|
| City | San Carlos, CA | Belmont, CA | Redwood City, CA | Redwood City, CA | San Mateo, CA | Foster City, CA |
| Population | 30,696 | 27,730 | 11,620 | 37,369 | 43,459 | 35,950 |
| Median Income | $235,373 | $204,573 | $213,361 | $141,599 | $179,825 | $182,417 |
| Home Value | $2M+ | $2M+ | $1,847,000 | $1,938,300 | $1,725,900 | $1,682,700 |
| Cost of Living | 250 | 250 | 250 | 250 | 250 | 250 |
| Median Age | 41.6 | 40.4 | 42.6 | 37.6 | 38.5 | 40.1 |
Cost of Living
100 = National Average. San Carlos's cost of living is 150% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
8.5x
Demographics
Zip code 94070 has a population of 30,696 people with a median age of 41.6. There are 11,958 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
San Carlos (94070) population trend from 2010 to 2024
↑ 15.6%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
81°F
41°F
19 in
0 in
San Carlos experiences warm summers with average highs around 81°F. Winters are mild with lows averaging 41°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$2M+
Median Household Income
$235,373
With 11,958 housing units across 6.1 square miles, 94070 has a housing density of 1,960 units per square mile. The home price-to-income ratio is 8.5x.
Location & Geography
Latitude
37.4965°
Longitude
-122.2726°
Land Area
6.1 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 94070 (San Carlos, CA) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 94070's $235,373. A way to compare San Carlos 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 94070 (San Carlos, 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.
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People Also Ask
What zip code is San Carlos, California?
San Carlos, California uses zip code 94070.
What county is zip code 94070 in?
Zip code 94070 is located in San Mateo County, California.
What is the population of zip code 94070?
The population of zip code 94070 is 30,696 with a median age of 41.6.
Is 94070 in San Carlos, California?
Yes, zip code 94070 is in San Carlos, San Mateo County, California. The area code is 408.
Frequently Asked Questions
What city is zip code 94070 in?
Zip code 94070 is in San Carlos, California. It is part of San Mateo County and uses the Pacific (PST/PDT) timezone.
What is zip code 94070?
Zip code 94070 is a U.S. postal code in San Carlos, California (San Mateo County). It has a population of 30,696 and covers 6.1 square miles.
What is the population of zip code 94070?
The population of zip code 94070 (San Carlos, CA) is 30,696 with a median age of 41.6. There are approximately 11,958 housing units in this area.
What is the median income in zip code 94070?
The median household income in zip code 94070 (San Carlos, CA) is $235,373 per year. The cost of living index is 250 (100 = national average).
What is the average home price in zip code 94070?
The median home value in zip code 94070 (San Carlos, CA) is $2M+. The cost of living index is 250 compared to the national average of 100.
What county is zip code 94070 in?
Zip code 94070 is located in San Mateo County, California. The primary city is San Carlos.
What is the area code for zip code 94070?
Zip code 94070 in San Carlos, CA uses area code 408. It is located in the Pacific (PST/PDT) timezone.
Is zip code 94070 a good place to live?
Zip code 94070 (San Carlos, CA) has a cost of living index of 250 (100 = national average), a median household income of $235,373, and median home values of $2M+. The median age is 41.6. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 94070?
The cost of living index for zip code 94070 (San Carlos, CA) is 250, where 100 represents the national average. This area is above the national average. Median home value: $2M+.
What schools serve zip code 94070?
Zip code 94070 in San Carlos, California is served by the local school district of San Mateo 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.
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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.