How many homes in Castro Valley, CA are overcrowded?

Name: Crowding and facilities in Castro Valley, CA, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

5.5% (±1.6 points) of occupied homes in Castro Valley, CA have more than one occupant per room (2020–2024 American Community Survey).

1.4% have more than 1.5.

0.1% lack complete plumbing.

0.1% lack a complete kitchen.

Figures last updated on November 12, 2026.

More than 1 per room: 5.5% (±1.6 points)
Lacking plumbing: 0.1%
Lacking a kitchen: 0.1%

Crowding and facilities in Castro Valley

Share of occupied homes, estimate (90% margin of error)
	Castro Valley	Alameda County	California	United States
More than 1 person per room	5.5% (±1.6 points)	7.3% (±0.4 points)	8.2% (±0.1 points)	3.4%
More than 1.5 people per room	1.4% (±0.7 points)	2.7% (±0.2 points)	3.2% (±0.1 points)	1.2%
Lacking complete plumbing	0.1% (±0.1 points)	0.4% (±0.1 points)	0.4% (±0.1 points)	0.4%
Lacking a complete kitchen	0.1% (±0.1 points)	0.8% (±0.1 points)	1.2% (±0.1 points)	0.8%

A room is any whole room other than a bathroom, hall or porch; more than one person per room is the Census Bureau’s usual measure of crowding.

Complete plumbing means hot and cold running water and a bath or shower; a complete kitchen means a sink with a faucet, a stove or range and a refrigerator.

In Castro Valley, the share of crowded homes is lower than in Alameda County (7.3%).

It is also lower than in California (8.2%).

It is higher than the national figure (3.4%).

Crowded homes in places near Castro Valley

Nearest places with a published estimate, compared with Castro Valley
Place	Distance	Crowded homes	Compared with this place
Castro Valley	—	5.5% (±1.6 points)	—
Fairview	2.3 mi	6.4% (±3.1 points)	Not measurably different
Cherryland	3.0 mi	19.5% (±5.5 points)	Higher
Ashland	3.1 mi	14.2% (±3.8 points)	Higher
San Lorenzo	4.6 mi	11.8% (±2.8 points)	Higher
Norris Canyon	4.8 mi	0.0% (±21.8 points)	Not measurably different
San Leandro	5.5 mi	11.1% (±1.8 points)	Higher
Hayward	6.1 mi	13.0% (±1.4 points)	Higher
Union City	7.7 mi	6.5% (±1.0 points)	Not measurably different

Nearby places with a measurably higher figure: Cherryland, CA (19.5%), Ashland, CA (14.2%), San Lorenzo, CA (11.8%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

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).

Margins of error are at the 90% confidence level.

What you can do on Seayora in Castro Valley

One account for renting, owning, managing and fixing homes, with these figures beside you.

Do repairs, renovations or maintenance?

Get found by owners and renters near Castro Valley, and send estimates and invoices from your phone.

Join as a pro · Find a pro

Own or manage a rental?

List it, sign the lease and collect rent online, with the figures for Castro Valley beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

Browse homes for rent near Castro Valley, save the ones you like and apply online.

Browse rentals · Create a renter account

Questions about Castro Valley

How many homes in Castro Valley are overcrowded?

5.5% of occupied homes in Castro Valley, CA have more than one person per room (2020–2024 American Community Survey).

How many homes in Castro Valley lack plumbing or a kitchen?

0.1% lack complete plumbing facilities and 0.1% lack complete kitchen facilities.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Castro Valley CDP, California

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 API needs a free key.

Request a Census API key.

DP04_0078PE, DP04_0078PM, DP04_0079PE, DP04_0079PM, DP04_0073PE, DP04_0073PM, DP04_0074PE, DP04_0074PM

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.