What kinds of homes are in Castle Rock, WA?

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

Castle Rock, WA has 907 (±156) homes (2020–2024 American Community Survey).

That is about 433 homes per square mile of land.

77.1% are detached single-family houses.

7.2% are in buildings of two to four units.

10.1% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 907 (±156)
Detached houses: 77.1%
2–4 unit buildings: 7.2%
5+ unit buildings: 10.1%

Homes in Castle Rock by building size

Housing units by units in structure, 2020–2024
Building type	Castle Rock	Cowlitz County	Washington	United States
Single-family, detached	77.1% (±7.8 points)	69.4%	61.9%	61.3%
Single-family, attached (townhouse, rowhouse)	0.4% (±0.7 points)	2.3%	4.4%	6.2%
2 units	6.0% (±5.1 points)	3.4%	2.3%	3.4%
3 or 4 units	1.2% (±2.0 points)	2.6%	3.5%	4.3%
5 to 9 units	1.3% (±1.8 points)	2.7%	4.3%	4.5%
10 to 19 units	4.1% (±3.9 points)	3.6%	4.9%	4.3%
20 or more units	4.7% (±3.0 points)	7.2%	13.0%	10.3%
Mobile home	5.2% (±3.7 points)	8.5%	5.5%	5.6%
Boat, RV, van, etc.	0.0% (±4.3 points)	0.2%	0.3%	0.1%

In Castle Rock, the share of homes in buildings of five or more units is not measurably different from Cowlitz County (13.5%).

It is also lower than in Washington (22.2%).

It is lower than the national figure (19.1%).

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

Nearest places with a published estimate, compared with Castle Rock
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Castle Rock	—	10.1% (±5.2 points)	—
Lexington	5.7 mi	2.7% (±4.0 points)	Lower
Longview Heights	6.8 mi	10.9% (±6.7 points)	Not measurably different
Beacon Hill	7.0 mi	15.7% (±13.1 points)	Not measurably different
Longview	9.2 mi	24.7% (±2.8 points)	Higher
Vader	9.5 mi	0.0% (±24.8 points)	Not measurably different
Kelso	11 mi	13.6% (±3.6 points)	Not measurably different
Toledo	12 mi	4.7% (±21.2 points)	Not measurably different
Rainier	14 mi	2.6% (±7.1 points)	Not measurably different

Nearby places with a measurably lower figure: Lexington, WA (2.7%).

Nearby places with a measurably higher figure: Longview, WA (24.7%).

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 Cowlitz County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Longview	24.7% (±2.8 points)
2	Woodland	19.8% (±8.3 points)
3	Kalama	18.7% (±20.4 points)
4	Beacon Hill	15.7% (±13.1 points)
5	Kelso	13.6% (±3.6 points)
6	Longview Heights	10.9% (±6.7 points)
7	Castle Rock	10.1% (±5.2 points)
8	Lexington	2.7% (±4.0 points)

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Castle Rock

How many homes are in Castle Rock?

Castle Rock, WA has an estimated 907 (±156) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Castle Rock houses or apartments?

77.1% are detached houses and 0.4% attached houses, while 17.3% are in buildings of two or more units.

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

7.2% of homes in Castle Rock 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 Rock city, Washington

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 Rock city, Washington (place:10565, in state:53).

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.