Knightsen, CA · standard
ZIP Code 94548
Contra Costa County, California - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 412
- 58/sq mi
- $189,653
- Median income
- $959,900
- Median home value
- 22.3%
- Bachelor's or higher
The verdict
Knightsen pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.
- Top 1%
- household income, US ZIPs
- Top 3%
- home value, US ZIPs
- 58
- people per sq mi
- 100%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 94548 against every reporting US ZIP.
ZIP code 94548 is a sparsely populated ZIP (a standard USPS delivery area) in Knightsen, Contra Costa County, California, home to just 412 residents across 7.2 square miles, a density of 58 people per square mile, in the Los Angeles time zone.
ZIP 94548 skews affluent, with a median household income of $189,653 (87% above the California average), while per-capita income is $64,991. Poverty here runs at 9.1%, with unemployment measured at 13.5%. The typical home here is valued at $959,900 (24% above the state average); renters pay a median of - monthly, and 100.0% of units are owner-occupied.
Educational attainment sits below the national norm: 22.3% of adults hold a bachelor's degree or higher, the median age is 44.2, and the average commute is -. We also surface 7 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Contra Costa County, so you can benchmark 94548 against its immediate geography rather than a national average alone.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 94548, Knightsen, CA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
412
Population
7.2
Area (sq mi)
58
People / sq mi
Los Angeles
Time Zone
standard
ZIP Type
Who lives in ZIP 94548?
44.2
Median Age
50.6%
Male
49.4%
Female
27.5%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$189,653
Median Household Income
+87% vs state
$64,991
Per Capita Income
9.1%
Poverty Rate
13.5%
Unemployment Rate
How ZIP 94548 ranks nationally
Knightsen, CA household income vs. every US ZIP code
Median household income, the full national distribution, with this ZIP marked
$189,653 Top 1% higher than 99% of 30,318 US ZIPs
Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
259
Total Housing Units
259
Occupied Units
0
Vacant Units
3.21
Avg Household Size
Occupancy Type
$959,900
Median Home Value
+24% vs state
1968
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 10 business establishments in ZIP 94548, employing approximately 60 people with a combined annual payroll of $2,528,000.
10
Businesses
60
Employees
$2.5M
Annual Payroll
2
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 3 | 30.0% |
| Administrative and support and waste management and remediation services | 3 | 30.0% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 94548 vs 94561 →
ZIP 94548 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 94513
Brentwood (94513)
54,605 residents
- 94531
Antioch (94531)
40,290 residents
- 94561
Oakley (94561)
36,515 residents
- 94505 13,403
Discovery Bay (94505)
13,403 residents
- 94511 2,137
Bethel Island (94511)
2,137 residents
- 94514 1,360
Byron (94514)
1,360 residents
- 94548 412
Knightsen (94548)
412 residents
- 95234 70
Holt (95234)
70 residents
What this shows Among its immediate neighbors, ZIP 94548 ranks #7 by population - useful context the national average alone can't give.
ZIP 94548 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 94548
Knightsen (94548)
$189,653 median income
- 94505
Discovery Bay (94505)
$146,480 median income
- 94513
Brentwood (94513)
$142,223 median income
- 94561
Oakley (94561)
$134,678 median income
- 94531
Antioch (94531)
$120,927 median income
- 94514
Byron (94514)
$76,511 median income
- 94511 $74,972
Bethel Island (94511)
$74,972 median income
What this shows By household income, ZIP 94548 ranks the highest of 7 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
More ZIP Codes in Contra Costa County
Related Areas
Frequently Asked Questions
What county is ZIP code 94548 in? ▼
What is the population of ZIP code 94548? ▼
What is the median household income in ZIP 94548? ▼
What is the average home value in ZIP 94548? ▼
What is the demographic makeup of ZIP 94548? ▼
How many businesses are in ZIP code 94548? ▼
What is the education level in ZIP code 94548? ▼
What is the poverty rate in ZIP code 94548? ▼
Read our methodology to see how this data is sourced, computed, and verified.