What kinds of homes are in Sumas, WA?

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

Sumas, WA has 618 (±111) homes (2020–2024 American Community Survey).

That is about 421 homes per square mile of land.

68.3% are detached single-family houses.

15.1% are in buildings of two to four units.

7.2% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 618 (±111)
Detached houses: 68.3%
2–4 unit buildings: 15.1%
5+ unit buildings: 7.2%

Homes in Sumas by building size

Housing units by units in structure, 2020–2024
Building type	Sumas	Whatcom County	Washington	United States
Single-family, detached	68.3% (±9.0 points)	62.8%	61.9%	61.3%
Single-family, attached (townhouse, rowhouse)	4.4% (±3.8 points)	3.5%	4.4%	6.2%
2 units	2.3% (±3.2 points)	2.6%	2.3%	3.4%
3 or 4 units	12.8% (±6.1 points)	4.4%	3.5%	4.3%
5 to 9 units	1.6% (±1.3 points)	4.1%	4.3%	4.5%
10 to 19 units	5.3% (±4.1 points)	5.8%	4.9%	4.3%
20 or more units	0.3% (±0.5 points)	10.2%	13.0%	10.3%
Mobile home	5.0% (±4.4 points)	6.3%	5.5%	5.6%
Boat, RV, van, etc.	0.0% (±6.3 points)	0.2%	0.3%	0.1%

In Sumas, the share of homes in buildings of five or more units is lower than in Whatcom County (20.1%).

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 Sumas

Nearest places with a published estimate, compared with Sumas
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Sumas	—	7.2% (±4.3 points)	—
Nooksack	5.2 mi	0.0% (±10.6 points)	Not measurably different
Peaceful Valley	6.3 mi	5.7% (±8.1 points)	Not measurably different
Everson	6.9 mi	5.2% (±8.0 points)	Not measurably different
Lynden	9.0 mi	12.9% (±3.6 points)	Higher
Ferndale	18 mi	17.1% (±6.4 points)	Higher
Geneva	18 mi	1.1% (±5.7 points)	Not measurably different
Bellingham	19 mi	38.7% (±1.9 points)	Higher
Sudden Valley	19 mi	2.7% (±2.9 points)	Not measurably different

Nearby places with a measurably higher figure: Lynden, WA (12.9%), Ferndale, WA (17.1%), Bellingham, WA (38.7%).

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 Whatcom County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Bellingham	38.7% (±1.9 points)
2	Marietta-Alderwood	29.9% (±9.9 points)
3	Ferndale	17.1% (±6.4 points)
4	Lynden	12.9% (±3.6 points)
5	Blaine	9.1% (±4.1 points)
6	Birch Bay	7.8% (±4.1 points)
7	Sumas	7.2% (±4.3 points)
8	Peaceful Valley	5.7% (±8.1 points)
9	Everson	5.2% (±8.0 points)
10	Sudden Valley	2.7% (±2.9 points)
11	Point Roberts	1.9% (±2.0 points)
12	Geneva	1.1% (±5.7 points)
13	Nooksack	0.0% (±10.6 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 Sumas

How many homes are in Sumas?

Sumas, WA has an estimated 618 (±111) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Sumas houses or apartments?

68.3% are detached houses and 4.4% attached houses, while 22.3% are in buildings of two or more units.

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

15.1% of homes in Sumas 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 — Sumas 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 Sumas city, Washington (place:68330, 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.