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ZIP CODE TABULATION AREA

94556

California · 15,998 residents · 19.3 sq mi
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With 15,998 people, ZIP 94556 is a ZIP code in Contra Costa County. Households take in $215,720 a year at the median, 162% more than the country as a whole. 82% of adults hold a bachelor's degree, against 36% nationally. Median home value sits at $1,659,600. That is roughly 70% ahead of the Contra Costa County median. Renters pay $2,906 a month at the median. Among the 42 ZIP codes in Contra Costa County, 94556 ranks 7th by median household income.

$215,720
US average: $82,259
$99,286
US average: $44,673
$1,659,600
US average: $376,019
81.9%
US average: 35.6%
Land area
19.3 sq mi
Age, sex & households
Under 18
23.9%
Age 65+
20.8%
49.5%
50.5%
2.74 people
Race & ethnicity · 2024
2024
White, non-Hispanic59.1%(9,448)
Black1%(165)
Hispanic / Latino8.8%(1,401)
Asian22.8%(3,645)
Other8.4%(1,339)
73
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
7.7
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Contra Costa County
Income rank vs other ZIPs
LOWEST7TH OF 42HIGHEST
Adjacent ZIPs
94505$146,480
94506$250,001
94507$250,001
94509$86,196
Frequently asked

How many people live in ZIP code 94556?

ZIP code 94556 has about 15,998 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 94556?

The typical household in ZIP code 94556 earns about $215,720 a year. Half of households make more than that, and half make less.

Is ZIP code 94556 expensive?

In ZIP code 94556, the median home is worth about $1,659,600, and the typical rent is about $2,906 a month.

How educated are people in ZIP code 94556?

About 81.9% of adults age 25 and over in ZIP code 94556 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 94556?

About 7.5% of people in ZIP code 94556 live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024