Housing data for Castro Valley, CA

Castro Valley, CA has an estimated 65,001 residents and 22,957 homes (US Census Bureau, 2020–2024 American Community Survey).

It is an unincorporated community in Alameda County.

27.5% of households rent.

The median gross rent is $2,554 a month.

Figures last updated on .

Residents
65,001 (±2,001)
Housing units
22,957 (±700)
Households that rent
27.5%
Median gross rent
$2,554
Residents since 2015–2019
+3.2%

What stands out in Castro Valley

Homes in buildings of 5 or more units: 12.1% (±1.8 points) in Castro Valley, lower than in Alameda County (28.8%).

Households that rent: 27.5% (±2.2 points) in Castro Valley, lower than in Alameda County (45.6%).

Households without a vehicle: 5.5% (±1.3 points) in Castro Valley, lower than in Alameda County (10.0%).

Households that moved in since 2020: 18.3% (±2.2 points) in Castro Valley, lower than in Alameda County (24.7%).

Housing in Castro Valley at a glance

Castro Valley against Alameda County, its state and the nation

Estimate (90% margin of error)
Castro ValleyAlameda CountyCaliforniaUnited States
Residents65,001 (±2,001)1,649,473 (exact)39,287,377 (exact)334,922,499
Housing units22,957 (±700)637,212 (±385)14,644,735 (±1,665)143,775,355
Households that rent27.5% (±2.2 points)45.6% (±0.5 points)44.1% (±0.2 points)34.8%
Median gross rent$2,554 (±$105)$2,357 (±$16)$2,036 (±$5)$1,413
Median household income$142,779 (±$7,262)$129,367 (±$1,284)$99,122 (±$310)$80,734
Median home value$1,104,600 (±$21,750)$1,090,100 (±$6,313)$734,700 (±$1,307)$332,700
Median real estate taxes (a year)$8,225 (±$278)$8,474 (±$77)$5,124 (±$17)$3,119
Built before 198067.5% (±3.5 points)65.4% (±0.7 points)56.0% (±0.2 points)49.7%
Average commute32.7 minutes (±1.3)31.0 minutes (±0.2)28.7 minutes (±0.1)26.4 minutes
Households with broadband96.7% (±0.9 points)94.4% (±0.2 points)93.5% (±0.1 points)91.0%
Median age of residents42.9 years (±1.3)39.0 years (±0.2)37.9 years (±0.1)38.9 years

Castro Valley covers 16.8 square miles of land, about 3,858 residents per square mile (Census Bureau Gazetteer).

How Castro Valley has changed since 2015–2019

2015–2019 and 2020–2024 American Community Survey 5-year estimates
2015–20192020–2024Amount of changeVerdict
Residents63,013 (±1,091)65,001 (±2,001)+3.2%Not a measurable change
Housing units23,178 (±430)22,957 (±700)−1.0%Not a measurable change
Median gross rent$1,791 (±$48)$2,554 (±$105)+42.6%Up after inflation
Median home value$741,500 (±$15,313)$1,104,600 (±$21,750)+49.0%Up after inflation
Median household income$108,488 (±$5,268)$142,779 (±$7,262)+31.6%No measurable change after inflation
Median owner cost with a mortgage$2,806 (±$63)$3,627 (±$152)+29.3%Up after inflation
Median real estate taxes$5,651 (±$187)$8,225 (±$278)+45.5%Up after inflation
Households that rent28.7% (±1.8 points)27.5% (±2.2 points)−1.2 percentage pointsNot a measurable change
Rental vacancy rate2.5% (±1.5 points)5.8% (±2.8 points)+3.3 percentage pointsMeasurable increase

The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.

Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.

The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.

Crime reported to police in Alameda County

Castro Valley has no police department of its own in the FBI’s figures, so this is the figure for Alameda County as a whole.

In 2025, the police departments that report for Alameda County recorded 645 violent and 3,177 property crimes per 100,000 residents.

A county-wide figure describes the whole county, not this place; crime varies from one community to the next.

ZIP codes in Castro Valley

ZIP Code Tabulation Areas that cover this place (2020–2024 estimates)
ZIP codeShare of the ZIP’s land in this placeResidentsMedian gross rentMedian home valueMedian household income
9454643%44,855$2,539$1,043,500$128,385
9457837%41,769$2,116$823,000$94,084
9455216%14,506$3,197$1,394,300$212,605

A ZIP code is a mail route rather than a boundary, so the Census Bureau publishes figures for ZIP Code Tabulation Areas built from census blocks; the share column says how much of each one’s land lies in this place.

Places near Castro Valley

Nearest places with Census figures, by straight-line distance
PlaceDistanceMedian gross rentMedian home valueHouseholds that rent
Fairview2.3 mi$2,644$963,30021.2%
Cherryland3.0 mi$2,140$668,80060.7%
Ashland3.1 mi$2,110$775,80064.9%
San Lorenzo4.6 mi$2,163$847,10032.8%
Norris Canyon4.8 mi—$2,000,000 or more0.0%
San Leandro5.5 mi$2,186$844,20041.9%
Hayward6.1 mi$2,391$854,40042.0%
Union City7.7 mi$2,713$1,104,90035.3%

Places in California most like Castro Valley

PlaceMedian gross rentMedian home valueMedian household incomeHouseholds that rent
Newark$2,776$1,142,800$169,06430.6%
Cypress$2,483$913,900$130,21531.9%
Livermore$2,677$1,105,600$160,77528.0%
Martinez$2,353$859,800$127,35529.2%
Cerritos$2,930$935,300$135,43924.1%
Pinole$2,700$718,600$127,71720.6%

Matched on rent, home value, income, the share who rent, the age of the homes, the share in apartment buildings and the commute, each measured against the spread across California.

HUD Fair Market Rent for Castro Valley, fiscal year 2027

Oakland-Fremont, CA HUD Metro FMR Area, dollars a month
Studio1 bedroom2 bedrooms3 bedrooms4 bedrooms
$2,088$2,290$2,805$3,592$4,250

HUD income limits for Castro Valley, fiscal year 2026

Oakland-Fremont, CA HUD Metro FMR Area, annual household income
Household sizeExtremely low (30%)Very low (50%)Low (80%)
1 person$35,650$59,400$95,050
2 people$40,750$67,900$108,600
3 people$45,850$76,400$122,200
4 people$50,900$84,850$135,750
5 people$55,000$91,650$146,650
6 people$59,050$98,450$157,500
7 people$63,150$105,250$168,350
8 people$67,200$112,050$179,200

These are the limits HUD sets for its housing programs in the Oakland-Fremont, CA HUD Metro FMR Area, where HUD’s median family income for fiscal year 2026 is $162,800.

A program can use its own limits; tax-credit and local programs often do.

Castro Valley is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.

Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.

Margins of error are at the 90% confidence level.

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Questions about Castro Valley

What is the average rent in Castro Valley, CA?

The Census Bureau publishes the median rather than the average: the median gross rent in Castro Valley is $2,554 (±$105) a month (2020–2024 American Community Survey), so half of renting households pay less and half pay more.

How much is a one-bedroom apartment in Castro Valley?

The median gross rent for a one-bedroom home in Castro Valley, CA is $1,978 (±$193) a month (2020–2024 American Community Survey).

Are renters in Castro Valley rent-burdened?

53.8% of renting households in Castro Valley pay 30% or more of their income in gross rent, the share housing researchers usually call rent-burdened (2020–2024 American Community Survey).

How many renters are there in Castro Valley?

Castro Valley has an estimated 6,046 (±496) renting households, 27.5% of its occupied homes (2020–2024 American Community Survey).

What is the median household income in Castro Valley?

The median household income in Castro Valley is $142,779 (±$7,262) a year (2020–2024 American Community Survey).

What is the average home value in Castro Valley, CA?

The Census Bureau publishes the median: $1,104,600 (±$21,750) for owner-occupied homes in Castro Valley (2020–2024 American Community Survey).

Is Castro Valley growing?

In Castro Valley, the number of residents went from 63,013 in 2015–2019 to 65,001 in 2020–2024 (+3.2%), not a measurable change.

What ZIP codes are in Castro Valley?

The ZIP codes that cover Castro Valley are 94546, 94578, 94552.

What is the median rent in ZIP code 94546?

The median gross rent in ZIP Code Tabulation Area 94546 is $2,539 (±$103) a month (2020–2024 American Community Survey).

Sources

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Castro Valley CDP, California (place:11964, in state:06).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The 2015–2019 figures are B01003_001E, B01003_001M, B25064_001E, B25064_001M from the 2019 release.

The API needs a free key.

Request a Census API key.

DP05_0001E, DP05_0001M, DP04_0001E, DP04_0001M, DP04_0047PE, DP04_0047PM, DP04_0134E, DP04_0134M, DP03_0062E, DP03_0062M, DP04_0089E, DP04_0089M

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.

Figures last updated on .

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