ZIP Code 94556

ZIP Code Tabulation Area in Contra Costa County, California.

Population: 15,922
Median household income: $199,300
Median home value: $1,594,100

ZIP Code 94556 is a ZIP Code Tabulation Area in Contra Costa County, California, home to about 15,922 residents. At $199,300, its median household income sits above Contra Costa County's $125,727.

From 2019 to 2023, ZIP Code 94556's population declined 3.1% from 16,428 to 15,922, while its median gross rent rose 46.6% from $2,128 to $3,119.

80.8% of adults 25 and older hold a bachelor's degree or higher. Owners occupy 84.5% of the area's occupied homes.

Demographics

ACS 2019–2023

Population: 15,922
Median age: 43.5 yrs
Median household income: $199,300
Median home value: $1,594,100
Median gross rent: $3,119
Housing units: 5,830
Homeownership rate: 84.5%
Bachelor's degree or higher: 80.8%
Unemployment rate: 5.7%

Trends

ACS 5-year · 2019–2023

Population

16,42815,922

Median household income

$141,366$199,300

Median home value

$1,142,100$1,594,100

Median gross rent

$2,128$3,119

Year	Population	Median household income	Median home value	Median gross rent
2019	16,428	$141,366	$1,142,100	$2,128
2020	15,776	$152,965	$1,171,200	$2,311
2021	15,672	$167,500	$1,224,100	$2,378
2022	15,959	$193,750	$1,475,900	$2,741
2023	15,922	$199,300	$1,594,100	$3,119

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 55.4%

5 to 1717.5%

18 to 2411.0%

25 to 344.5%

35 to 4413.2%

45 to 5413.4%

55 to 6412.9%

65 to 7411.9%

75 and over10.2%

	Count	Share
Under 5	864	5.4%
5 to 17	2,789	17.5%
18 to 24	1,756	11.0%
25 to 34	712	4.5%
35 to 44	2,108	13.2%
45 to 54	2,129	13.4%
55 to 64	2,055	12.9%
65 to 74	1,890	11.9%
75 and over	1,619	10.2%

Race & ethnicity

	Count	Share
White (non-Hispanic)	9,813	61.6%
Black or African American	80	0.5%
American Indian & Alaska Native	0	0.0%
Asian	3,511	22.1%
Native Hawaiian & Pacific Islander	20	0.1%
Some other race	125	0.8%
Two or more races	1,077	6.8%
Hispanic or Latino (any race)	1,296	8.1%

Educational attainment (age 25+)

No high school diploma0.9%

High school graduate4.7%

Some college or associate's13.6%

Bachelor's degree41.8%

Graduate or professional degree39.0%

	Count	Share
No high school diploma	93	0.9%
High school graduate	489	4.7%
Some college or associate's	1,435	13.6%
Bachelor's degree	4,398	41.8%
Graduate or professional degree	4,098	39.0%

Commute to work

Mean travel time to work: 32 min

Drove alone46.5%

Carpooled5.8%

Public transit6.8%

Walked4.0%

Bicycle0.1%

Worked from home36.0%

Other means0.8%

How workers get to work

	Count	Share
Drove alone	3,284	46.5%
Carpooled	408	5.8%
Public transit	481	6.8%
Walked	279	4.0%
Bicycle	8	0.1%
Worked from home	2,541	36.0%
Other means	59	0.8%

Travel time

	Count	Share
Under 15 min	922	20.4%
15 to 29 min	1,126	24.9%
30 to 44 min	1,306	28.9%
45 to 59 min	578	12.8%
60+ min	587	13.0%

Households

Average household size: 2.69
Poverty rate: 8.3% (1,265 of 15,298)

	Count	Share
Family households	4,375	77.0%
Nonfamily households	1,307	23.0%

Housing

Median year structure built: 1972

Occupancy

	Count	Share
Occupied	5,682	97.5%
Vacant	148	2.5%

Tenure (of occupied units)

	Count	Share
Owner-occupied	4,800	84.5%
Renter-occupied	882	15.5%

1-unit, detached71.1%

1-unit, attached13.4%

2 to 4 units7.9%

5 to 19 units3.6%

20 or more units3.6%

Mobile home & other0.3%

Units in structure

	Count	Share
1-unit, detached	4,148	71.1%
1-unit, attached	784	13.4%
2 to 4 units	462	7.9%
5 to 19 units	208	3.6%
20 or more units	209	3.6%
Mobile home & other	19	0.3%

ZIP Code 94556

Demographics

Trends

Age distribution

Race & ethnicity

Educational attainment (age 25+)

Commute to work

Households

Housing

Geography

Counties this ZIP covers

Compare with nearby ZIP codes

National ZIP rankings

Nearby ZIP codes