PlainZIP

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
$128,385
Median income
$1,043,500
Median home value
41.7%
Bachelor's or higher

The verdict

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 California average), while per-capita income is $57,324. Poverty here runs at 6.6%, with unemployment measured at 3.7%. Housing costs here run $1,043,500 for a typical home value (35% above the state average), with rent averaging $2,539 a month; 66.3% of homes are owner-occupied.

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. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Alameda County, letting you compare 94546 to its immediate surroundings rather than a national baseline 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 →

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.

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 · ZIP Code Business Patterns (ZBP) As of 2023

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 94546?

41.7

Median Age

48.8%

Male

51.2%

Female

28.2%

Foreign-Born

White 37.7%
African American 8.2%
Asian 29.2%
American Indian or Alaska Native 0.9%
Native Hawaiian or Pacific Islander 0.5%
Two or More Ethnicities 13.8%
Hispanic or Latino 23.5%

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

$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

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). This entry sits in this band. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

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?

High School Graduate or Higher 59.6%
Bachelor's Degree or Higher 41.7%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

16,233

Total Housing Units

15,565

Occupied Units

668

Vacant Units

2.84

Avg Household Size

Occupancy Type

Owner 66.3%
Renter 33.7%

$1,043,500

Median Home Value

+35% vs state

$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.

residents

What this shows Among its immediate neighbors, ZIP 94546 ranks #4 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 94546 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

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.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
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

More ZIP Codes in Alameda County

94544 standard
Hayward, CA
Pop: 73,026
94587 standard
Union City, CA
Pop: 69,516
94536 standard
Fremont, CA
Pop: 68,790
94541 standard
Hayward, CA
Pop: 61,635
94538 standard
Fremont, CA
Pop: 61,148
94501 standard
Alameda, CA
Pop: 60,212

Related Areas

Alameda County Castro Valley, CA California

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.

Read our methodology to see how this data is sourced, computed, and verified.