ZIP Code 94521

ZIP Code Tabulation Area in Contra Costa County, California.

Population: 41,118
Median household income: $127,312
Median home value: $823,100

Covering part of Contra Costa County, California, ZIP Code 94521 has about 41,118 residents. The median household income of $127,312 is in line with the Contra Costa County median ($125,727).

From 2019 to 2023, ZIP Code 94521's population declined 5.0% from 43,281 to 41,118, while its median gross rent rose 27.2% from $1,877 to $2,388.

5.6% of residents live below the poverty line. Households average 2.61 people.

Demographics

ACS 2019–2023

Population: 41,118
Median age: 43.0 yrs
Median household income: $127,312
Median home value: $823,100
Median gross rent: $2,388
Housing units: 16,083
Homeownership rate: 73.3%
Bachelor's degree or higher: 44.0%
Unemployment rate: 5.6%

Trends

ACS 5-year · 2019–2023

Population

43,28141,118

Median household income

$106,938$127,312

Median home value

$603,600$823,100

Median gross rent

$1,877$2,388

Year	Population	Median household income	Median home value	Median gross rent
2019	43,281	$106,938	$603,600	$1,877
2020	42,891	$104,141	$620,400	$1,939
2021	42,388	$112,030	$649,100	$2,068
2022	41,092	$121,368	$778,300	$2,284
2023	41,118	$127,312	$823,100	$2,388

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

Age distribution

Under 55.4%

5 to 1713.5%

18 to 247.3%

25 to 3412.1%

35 to 4414.3%

45 to 5412.9%

55 to 6414.8%

65 to 7412.1%

75 and over7.5%

	Count	Share
Under 5	2,240	5.4%
5 to 17	5,571	13.5%
18 to 24	3,002	7.3%
25 to 34	4,972	12.1%
35 to 44	5,887	14.3%
45 to 54	5,299	12.9%
55 to 64	6,075	14.8%
65 to 74	4,985	12.1%
75 and over	3,087	7.5%

Race & ethnicity

	Count	Share
White (non-Hispanic)	22,008	53.5%
Black or African American	1,960	4.8%
American Indian & Alaska Native	86	0.2%
Asian	6,405	15.6%
Native Hawaiian & Pacific Islander	120	0.3%
Some other race	303	0.7%
Two or more races	3,239	7.9%
Hispanic or Latino (any race)	6,997	17.0%

Educational attainment (age 25+)

No high school diploma5.5%

High school graduate17.6%

Some college or associate's32.9%

Bachelor's degree30.2%

Graduate or professional degree13.8%

	Count	Share
No high school diploma	1,663	5.5%
High school graduate	5,330	17.6%
Some college or associate's	9,981	32.9%
Bachelor's degree	9,157	30.2%
Graduate or professional degree	4,174	13.8%

Commute to work

Mean travel time to work: 33 min

Drove alone62.9%

Carpooled8.5%

Public transit5.4%

Walked1.5%

Bicycle1.5%

Worked from home18.2%

Other means2.0%

How workers get to work

	Count	Share
Drove alone	12,966	62.9%
Carpooled	1,746	8.5%
Public transit	1,110	5.4%
Walked	317	1.5%
Bicycle	318	1.5%
Worked from home	3,743	18.2%
Other means	416	2.0%

Travel time

	Count	Share
Under 15 min	2,691	15.9%
15 to 29 min	5,971	35.4%
30 to 44 min	3,940	23.4%
45 to 59 min	1,630	9.7%
60+ min	2,641	15.7%

Households

Average household size: 2.61
Poverty rate: 5.6% (2,290 of 40,859)

	Count	Share
Family households	10,806	69.2%
Nonfamily households	4,801	30.8%

Housing

Median year structure built: 1974

Occupancy

	Count	Share
Occupied	15,607	97.0%
Vacant	476	3.0%

Tenure (of occupied units)

	Count	Share
Owner-occupied	11,440	73.3%
Renter-occupied	4,167	26.7%

1-unit, detached66.9%

1-unit, attached9.1%

2 to 4 units5.9%

5 to 19 units8.6%

20 or more units9.4%

Mobile home & other0.2%

Units in structure

	Count	Share
1-unit, detached	10,763	66.9%
1-unit, attached	1,462	9.1%
2 to 4 units	941	5.9%
5 to 19 units	1,380	8.6%
20 or more units	1,506	9.4%
Mobile home & other	31	0.2%

ZIP Code 94521

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

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