ZIP Code Tabulation Area · California

ZIP Code 94548: Knightsen, CA

ZIP Code 94548 (Knightsen, Contra Costa County, California) has an estimated 832 residents in 259 households. The median household income is $189,653, the median home value is $959,900 and the median gross rent is —. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Some estimates have a large margin of error. 6 figures for this ZIP (population, household income, poverty rate, unemployment, bachelor's or higher, commute) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

832*

Margin of error ±424· estimate has a large margin of error

Median household income

$189,653*

Margin of error ±$93,798· estimate has a large margin of error

Median home value

$959,900

Margin of error ±$151,173

Median gross rent

—

Margin of error not available

Median age

44.2 yrs

Margin of error ±15.4 yrs

Mean travel time to work

53.2 min*

Margin of error ±43.9 min· estimate has a large margin of error

How ZIP 94548 compares with California and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 9454844.2 yrsCalifornia37.9 yrsUnited States38.9 yrs

Median household income

ZIP 94548$189,653*California$99,122United States$80,734

Per capita income

ZIP 94548$64,991California$49,513United States$44,673

Poverty rate

ZIP 945489.1%*California12.0%United States12.5%

Unemployment rate

ZIP 9454814.4%*California6.6%United States5.2%

Bachelor's degree or higher

ZIP 9454822.3%*California37.1%United States35.7%

Median home value

ZIP 94548$959,900California$734,700United States$332,700

Median gross rent

ZIP 94548—California$2,036/moUnited States$1,413/mo

Owner-occupied homes

ZIP 94548100.0%California55.9%United States65.2%

Mean travel time to work

ZIP 9454853.2 min*California28.7 minUnited States26.4 min

Worked from home

ZIP 9454819.0%California17.2%United States15.1%

All figures for ZIP 94548

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 94548 — ACS 2020–2024 5-year estimates
MeasureZIP 94548Margin of errorCaliforniaUnited States
Total population832*±42439,287,377334,922,499
Median age44.2 yrs±15.4 yrs37.9 yrs38.9 yrs
Households259±11413,548,091129,227,496
Median household income$189,653*±$93,798$99,122$80,734
Per capita income$64,991±$21,821$49,513$44,673
Poverty rate9.1%*±11.5 pts12.0%12.5%
Unemployment rate14.4%*±21.3 pts6.6%5.2%
Bachelor's degree or higher22.3%*±11.2 pts37.1%35.7%
Median home value$959,900±$151,173$734,700$332,700
Median gross rent——$2,036/mo$1,413/mo
Owner-occupied homes100.0%±0.0 pts55.9%65.2%
Mean travel time to work53.2 min*±43.9 min28.7 min26.4 min
Worked from home19.0%±7.3 pts17.2%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 94548
GroupZIP 94548CaliforniaUnited States
White alone, not Hispanic or Latino36.7%33.8%57.4%
Black or African American alone, not Hispanic or Latino0.0%5.2%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.0%0.3%0.5%
Asian alone, not Hispanic or Latino0.0%15.3%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.3%0.2%
Some other race alone, not Hispanic or Latino0.0%0.6%0.6%
Two or more races, not Hispanic or Latino0.0%4.4%4.3%
Hispanic or Latino (of any race)63.3%40.2%19.3%

Where ZIP 94548 is

State
California
Main county
Contra Costa County
Largest overlapping place
Knightsen (100% of the ZIP's land area)
Land area
2.31 sq mi· about 360 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Contra Costa County

94514 Contra Costa County, CA94516 Contra Costa County, CA94517 Contra Costa County, CA94518 Concord, CA94519 Concord, CA94520 Concord, CA94521 Concord, CA94523 Pleasant Hill, CA94525 Crockett, CA94526 Danville, CA94528 Diablo, CA94530 El Cerrito, CA94531 Antioch, CA94547 Hercules, CA94549 Lafayette, CA94553 Martinez, CA94556 Moraga, CA94561 Oakley, CA94563 Orinda, CA94564 Pinole, CA94565 Pittsburg, CA94569 Contra Costa County, CA94572 Rodeo, CA94575 Moraga, CA

See every ZIP code in California, or compare ZIP 94548 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.