What kinds of homes are in Castle Hill, CA?

Name: Types of homes in Castle Hill, CA, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Castle Hill, CA has 353 (±109) homes (2020–2024 American Community Survey).

That is about 603 homes per square mile of land.

94.9% are detached single-family houses.

0.0% are in buildings of two to four units.

0.0% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 353 (±109)
Detached houses: 94.9%
2–4 unit buildings: 0.0%
5+ unit buildings: 0.0%

Homes in Castle Hill by building size

Housing units by units in structure, 2020–2024
Building type	Castle Hill	Contra Costa County	California	United States
Single-family, detached	94.9% (±6.9 points)	67.5%	57.0%	61.3%
Single-family, attached (townhouse, rowhouse)	5.1% (±6.9 points)	8.9%	7.4%	6.2%
2 units	0.0% (±11.3 points)	1.4%	2.4%	3.4%
3 or 4 units	0.0% (±11.3 points)	4.2%	5.4%	4.3%
5 to 9 units	0.0% (±11.3 points)	3.7%	5.7%	4.5%
10 to 19 units	0.0% (±11.3 points)	3.1%	4.9%	4.3%
20 or more units	0.0% (±11.3 points)	9.7%	13.6%	10.3%
Mobile home	0.0% (±11.3 points)	1.4%	3.5%	5.6%
Boat, RV, van, etc.	0.0% (±11.3 points)	0.1%	0.1%	0.1%

In Castle Hill, the share of homes in buildings of five or more units is not measurably different from Contra Costa County (16.5%).

It is also lower than in California (24.2%).

It is not measurably different from the national figure (19.1%).

Homes in buildings of 5 or more units in places near Castle Hill

Nearest places with a published estimate, compared with Castle Hill
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Castle Hill	—	0.0% (±19.6 points)	—
Saranap	1.3 mi	29.5% (±9.7 points)	Higher
San Miguel (Contra Costa County)	1.4 mi	0.5% (±4.5 points)	Not measurably different
Walnut Creek	2.2 mi	36.9% (±2.5 points)	Higher
Acalanes Ridge	2.3 mi	0.0% (±16.8 points)	Not measurably different
Alamo	2.8 mi	1.9% (±2.4 points)	Not measurably different
Lafayette	3.5 mi	12.0% (±2.9 points)	Not measurably different
Contra Costa Centre	3.5 mi	81.4% (±8.4 points)	Higher
Moraga	4.1 mi	9.1% (±3.0 points)	Not measurably different

Nearby places with a measurably higher figure: Saranap, CA (29.5%), Walnut Creek, CA (36.9%), Contra Costa Centre, CA (81.4%).

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

Homes in buildings of 5 or more units across Contra Costa County, place by place

Rank	Place	Homes in buildings of 5 or more units
36	Discovery Bay	1.3% (±2.0 points)
37	Clayton	0.6% (±1.6 points)
38	San Miguel (Contra Costa County)	0.5% (±4.5 points)
39 (tie)	Acalanes Ridge	0.0% (±16.8 points)
39 (tie)	Bayview (Contra Costa County)	0.0% (±8.3 points)
39 (tie)	Bethel Island	0.0% (±6.9 points)
39 (tie)	Castle Hill	0.0% (±19.6 points)
39 (tie)	Diablo	0.0% (±14.7 points)
39 (tie)	East Richmond Heights	0.0% (±5.0 points)
39 (tie)	Kensington	0.0% (±3.3 points)
39 (tie)	Knightsen	0.0% (±12.1 points)
39 (tie)	Montalvin Manor	0.0% (±9.9 points)
39 (tie)	Norris Canyon	0.0% (±18.2 points)

Showing 13 of 48 places in Contra Costa County, ranked from highest to lowest.

Castle Hill 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 Castle Hill

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

Own or manage a rental?

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

Create a landlord account · See what landlords get

Looking for a place to rent?

Browse homes for rent near Castle Hill, save the ones you like and apply online.

Browse rentals · Create a renter account

Do repairs, renovations or maintenance?

Get found by owners and renters near Castle Hill, and send estimates and invoices from your phone.

Join as a pro · Find a pro

Questions about Castle Hill

How many homes are in Castle Hill?

Castle Hill, CA has an estimated 353 (±109) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Castle Hill houses or apartments?

94.9% are detached houses and 5.1% attached houses, while 0.0% are in buildings of two or more units.

How many two-family and small multifamily homes are in Castle Hill?

0.0% of homes in Castle Hill are in buildings of two to four units, the small rental buildings that are often owner-occupied.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Castle Hill 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 Castle Hill CDP, California (place:11915, 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_0001E, DP04_0001M, DP04_0007PE, DP04_0007PM, DP04_0008PE, DP04_0008PM, DP04_0009PE, DP04_0009PM, DP04_0010PE, DP04_0010PM, DP04_0011PE, DP04_0011PM, DP04_0012PE, DP04_0012PM, DP04_0013PE, DP04_0013PM, DP04_0014PE, DP04_0014PM, DP04_0015PE, DP04_0015PM

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.