Castro Valley, CA · standard
ZIP Code 94546
Alameda County, California - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 42,209
- 1,708/sq mi High-density area
- $128,385
- Median income Above-median income area
- $1,043,500
- Median home value Above-median home value
- 41.7%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Castro Valley pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated area.
- Top 7%
- household income, US ZIPs
- Top 2%
- home value, US ZIPs
- 1,708
- people per sq mi
- 66%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 94546 against every reporting US ZIP.
ZIP code 94546 is a densely settled ZIP (a standard USPS delivery area) in Castro Valley, Alameda County, California, with 42,209 residents across 24.7 square miles, a density of 1,708 people per square mile, in the Los Angeles time zone.
ZIP 94546 skews affluent, with a median household income of $128,385 (26% above the average California ZIP), while per-capita income is $57,324. Both reported hardship measures are comparatively low in absolute terms: poverty is 6.6% and unemployment is 3.7%. Housing is both higher-cost and owner-heavy: median home value is $1,043,500 (35% above the average California ZIP), while 66.3% of occupied homes are owner-occupied and median rent is $2,539.
A solid share of residents have a four-year degree: 41.7% of adults hold a bachelor's degree or higher, the median age is 41.7, and the average commute is 32 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Alameda County, so 94546 can be compared with both its immediate and county-level context.
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 →
Top industries in ZIP 94546
Top 5 sectors by establishment count in Castro Valley, CA
Which industries have the most business establishments in ZIP 94546.
- Health care and social assistance
Health care and social assistance
193 establishments
- Construction
Construction
113 establishments
- Accommodation and food services
Accommodation and food services
108 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
94 establishments
- Other services (except public administration)
Other services (except public administration)
92 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
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 94546, Castro Valley, 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
42,209
Population
24.7
Area (sq mi)
1,708
People / sq mi
Los Angeles
Time Zone
standard
ZIP Type
Who lives in ZIP 94546?
41.7
Median Age
48.8%
Male
51.2%
Female
28.2%
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?
$128,385
Median Household Income
+26% vs state ZIP avg
$57,324
Per Capita Income
6.6%
Poverty Rate
3.7%
Unemployment Rate
31.9 min
Mean Commute Time
How ZIP 94546 ranks nationally
Castro Valley, CA household income vs. every US ZIP code
Median household income, the full national distribution, with this ZIP marked
$128,385 Top 7% higher than 93% 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?
Housing stock: occupied vs vacant
16,233housing units
16,233
Total Housing Units
15,565
Occupied Units
668
Vacant Units
2.84
Avg Household Size
Occupancy Type
$1,043,500
Median Home Value
+35% vs state ZIP avg
$2,539
Median Rent
1960
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
-0.4%
YoY Change (2024)
332
HPI Index (2000 = 100)
+232%
Total Change Since 2000
Home values in ZIP 94546 have decreased 0.4% over the past year (2024). Since 2000, this ZIP has seen +232% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +1.9% | 248 |
| 2021 | +10.9% | 276 |
| 2022 | +14.1% | 315 |
| 2023 | +5.8% | 333 |
| 2024 | -0.4% | 332 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 923 business establishments in ZIP 94546, employing approximately 8,763 people with a combined annual payroll of $528,033,000.
923
Businesses
8,763
Employees
$528.0M
Annual Payroll
16
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Health care and social assistance | 193 | 20.9% |
| Construction | 113 | 12.2% |
| Accommodation and food services | 108 | 11.7% |
| Professional, scientific, and technical services | 94 | 10.2% |
| Other services (except public administration) | 92 | 10.0% |
| Retail trade | 69 | 7.5% |
| Real estate and rental and leasing | 62 | 6.7% |
| Administrative and support and waste management and remediation services | 40 | 4.3% |
| Finance and insurance | 39 | 4.2% |
| Transportation and warehousing | 29 | 3.1% |
| Educational services | 27 | 2.9% |
| Arts, entertainment, and recreation | 22 | 2.4% |
| Wholesale trade | 18 | 1.9% |
| Information | 9 | 1.0% |
| Manufacturing | 3 | 0.3% |
| Management of companies and enterprises | 3 | 0.3% |
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 94546 vs 94541 →
ZIP 94546 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 94544
Hayward (94544)
73,026 residents
- 94541
Hayward (94541)
61,635 residents
- 94577
San Leandro (94577)
45,560 residents
- 94546
Castro Valley (94546)
42,209 residents
- 94605
Oakland (94605)
39,016 residents
- 94578
San Leandro (94578)
38,558 residents
- 94580 27,152
San Lorenzo (94580)
27,152 residents
- 94619 23,299
Oakland (94619)
23,299 residents
- 94579 20,571
San Leandro (94579)
20,571 residents
What this shows Among its immediate neighbors, ZIP 94546 ranks #4 by population - useful context the national average alone can't give.
ZIP 94546 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 94552
Castro Valley (94552)
$212,605 median income
- 94542
Hayward (94542)
$133,734 median income
- 94619
Oakland (94619)
$129,867 median income
- 94546
Castro Valley (94546)
$128,385 median income
- 94580
San Lorenzo (94580)
$110,729 median income
- 94577
San Leandro (94577)
$108,772 median income
- 94544
Hayward (94544)
$107,785 median income
- 94605
Oakland (94605)
$106,068 median income
- 94541
Hayward (94541)
$105,729 median income
What this shows By household income, ZIP 94546 ranks #4 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 94541 | Hayward, CA | 61,635 | 2.8 mi |
| 94578 | San Leandro, CA | 38,558 | 2.5 mi |
| 94552 | Castro Valley, CA | 14,454 | 3.4 mi |
| 94577 | San Leandro, CA | 45,560 | 4.7 mi |
| 94580 | San Lorenzo, CA | 27,152 | 3.9 mi |
| 94542 | Hayward, CA | 12,717 | 4.5 mi |
| 94544 | Hayward, CA | 73,026 | 5.7 mi |
| 94579 | San Leandro, CA | 20,571 | 4.7 mi |
| 94605 | Oakland, CA | 39,016 | 4.9 mi |
| 94619 | Oakland, CA | 23,299 | 5.2 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 94546, both outside CA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (42,209 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Alameda County
Related Areas
Frequently Asked Questions
What county is ZIP code 94546 in?
ZIP code 94546 (Castro Valley) is located in Alameda County, California. Alameda County contains multiple ZIP codes, see the full list at /counties/alameda-ca.
What is the population of ZIP code 94546?
ZIP code 94546 in Castro Valley, CA has a population of 42,209 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 94546?
The median household income in ZIP 94546 is $128,385, which is 68% above the national average of $76,288.
What is the average home value in ZIP 94546?
The median home value in ZIP 94546 is $1,043,500, which is 275% above the national average of $278,155.
What is the demographic makeup of ZIP 94546?
The largest racial group in ZIP 94546 is White at 37.7%. Hispanic or Latino residents make up 23.5% of the population.
How many businesses are in ZIP code 94546?
ZIP code 94546 has 923 business establishments employing approximately 8,763 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 94546?
The top industries by establishment count in ZIP 94546 are: Health care and social assistance (193), Construction (113), Accommodation and food services (108). There are 16 industry sectors represented in total.
How have home values changed in ZIP code 94546?
According to the FHFA House Price Index, home values in ZIP 94546 decreased by 0.4% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 232%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 94546?
In ZIP code 94546, 59.6% of residents aged 25+ have a high school diploma or higher, and 41.7% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 94546?
The mean commute time for workers in ZIP code 94546 is 31.9 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 94546?
In ZIP code 94546, approximately 66.3% of occupied housing units are owner-occupied and 33.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 94546?
The poverty rate in ZIP code 94546 is 6.6% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 94546's numbers, next.
- See how ZIP 94546 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Castro Valley, CA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.