Zip code 94548: Knightsen, California

Q: What city is zip code 94548?

94548 is assigned to Knightsen, California. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 94548 in?

94548 is in Contra Costa County, California.

Q: What is the population of 94548?

About 832 people live in 94548, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 94548?

The median household income in 94548 is $189,653.

Q: What zip codes are near 94548?

The closest zip codes to 94548 are 94561, 94513, 94511, 94531, 94505.

Residential delivery areaContra Costa CountyPacific Time

Population

832

Median household income

$190K

U.S. $81K

Median home value

$960K

U.S. $333K

Median rent

—

U.S. $1,413

Median age

44.2

U.S. 38.9

Land area

2.3 sq mi

360 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 94548

94548 is a small-town zip code in Knightsen, California (Contra Costa County), covering 2.3 sq mi of land. About 832 people live here, or 360 per square mile. The median resident is 44.2 years old, compared with 38.9 nationally.

The median household earns $189,653 a year, about 2.3× the national median of $80,734. 9.1% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $959,900, or 5.1 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 100% of occupied homes are lived in by their owners.

22% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 53.2 minutes each way, and 19% of workers work from home. The most common jobs among working residents are in computer and math (tech); healthcare; and sales. 36% of households speak a language other than English at home, most often Spanish.

How 94548 compares

Sorted from highest to lowest national percentile

Median household income$189,653
99th
StrengthU.S. $80,734 · CA $99,12290th of 1,575 in CA
Homeownership rate100%
99th
StrengthU.S. 65.2% · CA 55.9%6th of 1,662 in CA
Average commute53.2 min
99th
WeaknessU.S. 26.4 min · CA 28.7 min23rd of 1,584 in CA
Unemployment rate14.4%
99th
WeaknessU.S. 5.2% · CA 6.6%112th of 1,681 in CA
Tech workers20.1%
99th
U.S. 3.8% · CA 4.4%35th of 1,678 in CA
Healthcare workers19.8%
99th
U.S. 9.7% · CA 9.4%49th of 1,678 in CA
Median earnings per worker$95,586
97th
StrengthU.S. $49,666 · CA $52,643140th of 1,658 in CA
Median home value$959,900
95th
U.S. $332,700 · CA $734,700414th of 1,586 in CA
Uninsured rate17.5%
92nd
WeaknessU.S. 8.4% · CA 6.6%53rd of 1,675 in CA
Per capita income$64,991
89th
StrengthU.S. $44,673 · CA $49,513374th of 1,685 in CA
Foreign-born residents27.5%
84th
U.S. 14.1% · CA 27%519th of 1,688 in CA
Median age44.2
82nd
U.S. 38.9 · CA 37.9517th of 1,687 in CA
Work from home19%
75th
U.S. 15.1% · CA 17.2%650th of 1,680 in CA
Residents under 1822.4%
53rd
U.S. 22% · CA 22%634th of 1,688 in CA
Diversity index46.4
46th
U.S. 61.4 · CA 69.71,125th of 1,688 in CA
Veterans5.5%
45th
U.S. 6.2% · CA 4.3%605th of 1,686 in CA
Poverty rate9.1%
39th
U.S. 12.5% · CA 12%991st of 1,666 in CA
Population density360/sq mi
28th
U.S. 95/sq mi · CA 252/sq mi1,009th of 1,688 in CA
Bachelor's degree or higher22.3%
27th
U.S. 35.7% · CA 37.1%1,121st of 1,687 in CA
Residents 65 and older12.9%
23rd
U.S. 17.2% · CA 15.7%1,229th of 1,688 in CA
Broadband access85.3%
13th
WeaknessU.S. 91% · CA 93.5%1,431st of 1,662 in CA
Self-employed workers4%
2nd
U.S. 10% · CA 11.4%1,542nd of 1,678 in CA
Population832
1st
U.S. 334,922,499 · CA 39,287,3771,448th of 1,688 in CA
Housing vacancy0%
1st
U.S. 10.1% · CA 7.5%1,614th of 1,664 in CA
Government workers0%
1st
U.S. 14.5% · CA 14.8%1,639th of 1,678 in CA
Income inequality (Gini)0.304
1st
StrengthU.S. 0.483 · CA 0.4891,584th of 1,651 in CA

Measure	94548	Contra Costa	CA	U.S.	National percentile	Rank in CA
Median household incomeStrength	$189,653	$127,229	$99,122	$80,734	99th	90th of 1,575
Homeownership rateStrength	100%	68%	55.9%	65.2%	99th	6th of 1,662
Average commuteWeakness	53.2 min	35.3 min	28.7 min	26.4 min	99th	23rd of 1,584
Unemployment rateWeakness	14.4%	6.5%	6.6%	5.2%	99th	112th of 1,681
Tech workers	20.1%	5.3%	4.4%	3.8%	99th	35th of 1,678
Healthcare workers	19.8%	9.2%	9.4%	9.7%	99th	49th of 1,678
Median earnings per workerStrength	$95,586	$67,204	$52,643	$49,666	97th	140th of 1,658
Median home value	$959,900	$866,800	$734,700	$332,700	95th	414th of 1,586
Uninsured rateWeakness	17.5%	4.6%	6.6%	8.4%	92nd	53rd of 1,675
Per capita incomeStrength	$64,991	$62,927	$49,513	$44,673	89th	374th of 1,685
Foreign-born residents	27.5%	26.6%	27%	14.1%	84th	519th of 1,688
Median age	44.2	40.5	37.9	38.9	82nd	517th of 1,687
Work from home	19%	21.3%	17.2%	15.1%	75th	650th of 1,680
Residents under 18	22.4%	22%	22%	22%	53rd	634th of 1,688
Diversity index	46.4	73.3	69.7	61.4	46th	1,125th of 1,688
Veterans	5.5%	4.2%	4.3%	6.2%	45th	605th of 1,686
Poverty rate	9.1%	8.4%	12%	12.5%	39th	991st of 1,666
Population density	360/sq mi	1,625/sq mi	252/sq mi	95/sq mi	28th	1,009th of 1,688
Bachelor's degree or higher	22.3%	45.2%	37.1%	35.7%	27th	1,121st of 1,687
Residents 65 and older	12.9%	17.1%	15.7%	17.2%	23rd	1,229th of 1,688
Broadband accessWeakness	85.3%	95.6%	93.5%	91%	13th	1,431st of 1,662
Self-employed workers	4%	11.4%	11.4%	10%	2nd	1,542nd of 1,678
Population	832	1,165,012	39,287,377	334,922,499	1st	1,448th of 1,688
Housing vacancy	0%	3.5%	7.5%	10.1%	1st	1,614th of 1,664
Government workers	0%	14.6%	14.8%	14.5%	1st	1,639th of 1,678
Income inequality (Gini)Strength	0.304	0.471	0.489	0.483	1st	1,584th of 1,651

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

14%

5–17

10%

18–24

25–34

16%

35–44

25%

45–54

55–64

11%

65–74

75+

Median age

44.2

Under 18

22.4%

65 and over

12.9%

Race and ethnicity

White37%
Black0%
Hispanic63%
Asian0%
Native American0%
Pacific Islander0%
Other0%
Multiracial0%

Diversity index

46.4

U.S. 61.4

Foreign-born

27.5%

U.S. 14.1%

Born in state

72.5%

Language spoken at home (households)

English only

64%

Spanish

36%

Other Indo-European

Asian / Pacific

Other

Households

Households: 259
Average household size: 3.2
Family households: 73%
Married couples: 54.4%
Living alone: 27%
Veterans (of adults): 5.5%
Male / female: 51% / 49%

Income and poverty

Household income distribution

<$25k

$25–50k

$50–75k

12%

$75–100k

$100–150k

12%

$150–200k

22%

$200k+

49%

Median household income

94548

$189,653

Contra Costa Co.

$127,229

California

$99,122

United States

$80,734

Per capita income

$64,991

U.S. $44,673

Poverty rate

9.1%

U.S. 12.5%

Households earning $150K+

70.7%

U.S. 23%

Income inequality (Gini)

0.304

U.S. 0.483

Housing

Median home value

94548

$959,900

Contra Costa Co.

$866,800

California

$734,700

United States

$332,700

Median gross rent

94548

—

Contra Costa Co.

$2,375

California

$2,036

United States

$1,413

Types of housing

Single-family

87%

2–4 units

5–19 units

20+ units

Mobile home

13%

Boat, RV, van

Housing units: 259
Owner-occupied: 100%
Vacant: 0%
Median year built: 1968
Median rooms: 6.8
Renters paying 30%+ of income: —
Renters paying 50%+ of income: —
Home value to income: 5.1× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

38%

Carpooled

34%

Transit

Walked

Bicycle

Worked from home

19%

Other

Commute time (one way)

<10 min

10–19

19%

20–29

17%

30–44

45–59

60+

59%

Average commute

53.2 min

U.S. 26.4 min

Unemployment

14.4%

U.S. 5.2%

In labor force

70.5%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Computer and math

20%

Healthcare

20%

Sales

10%

Engineering and science

10%

Production

Education

Office and admin

Construction and repair

Food service

Cleaning and personal care

Business and finance

Management

Legal and social services

Arts, media and sports

Police and fire

Farming, fishing and forestry

Transportation and moving

Industries

Health care and social assistance

20%

Other services

17%

Education

17%

Retail

17%

Finance, insurance and real estate

13%

Professional and technical services

11%

Admin, support and management

Manufacturing

Construction

Restaurants and hotels

Transportation, warehousing and utilities

Public administration

Wholesale

Information

Arts and recreation

Agriculture and mining

Median earnings per worker

$95,586

U.S. $49,666

Self-employed

U.S. 10%

Government workers

U.S. 14.5%

Nonprofit workers

25.7%

U.S. 8.8%

Median earnings by type of work

Type of work	94548	U.S.
Management, business, science and arts	$130,993	$74,888
Service	$51,597	$26,804
Sales and office	—	$40,476
Construction and maintenance	—	$49,199
Production and transportation	—	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

17%

High school

27%

Some college

23%

Associate's

12%

Bachelor's

Graduate

15%

High school graduate or higher: 83.4%
Bachelor's degree or higher: 22.3%
Graduate or professional degree: 15%
Households with broadband: 85.3%
Cable, fiber or DSL: 52.9%
No internet access: 14.7%
Without health insurance: 17.5%
Limited-English households: 0%

Geography

City (USPS): Knightsen
State: California
County: Contra Costa County
Center point: 37.9743° N, 121.6514° W
Land area: 2.3 sq mi
Water area: 0.1 sq mi
Time zone: Pacific Time (UTC-8, UTC-7 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Knightsen (unincorporated)100% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 94548

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
94561	Oakley, CA	2.5 mi	46,368	$134,678	$659,800
94513	Brentwood, CA	3.9 mi	69,755	$142,223	$837,800
94511	Bethel Island, CA	3.9 mi	1,864	$74,972	$682,700
94531	Antioch, CA	7 mi	46,387	$120,927	$701,600
94505	Discovery Bay, CA	7.7 mi	14,970	$146,480	$830,500
95219	Stockton, CA	8.7 mi	31,713	$112,268	$581,300
94509	Antioch, CA	8.9 mi	70,090	$86,196	$584,100
94514	Byron, CA	10 mi	1,953	$76,511	$735,600
95208	Stockton, CA · PO box	12 mi	—	—	—
95234	Holt, CA · PO box	13 mi	—	—	—
95641	Isleton, CA	13 mi	2,214	$74,886	$246,700
94571	Rio Vista, CA	14 mi	10,974	$87,740	$490,200

Questions about 94548

What city is zip code 94548?

94548 is assigned to Knightsen, California. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 94548 in?

94548 is in Contra Costa County, California.

What is the population of 94548?

About 832 people live in 94548, according to the Census Bureau's American Community Survey.

What time zone is 94548 in?

94548 is in Pacific Time.

What is the median household income in 94548?

The median household income in 94548 is $189,653.

What zip codes are near 94548?

The closest zip codes to 94548 are 94561, 94513, 94511, 94531, 94505.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 94548, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.