What kinds of homes are in San Anselmo, CA?

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

San Anselmo, CA has 5,498 (±323) homes (2020–2024 American Community Survey).

That is about 2,055 homes per square mile of land.

76.9% are detached single-family houses.

11.0% are in buildings of two to four units.

9.7% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 5,498 (±323)
Detached houses: 76.9%
2–4 unit buildings: 11.0%
5+ unit buildings: 9.7%

Homes in San Anselmo by building size

Housing units by units in structure, 2020–2024
Building type	San Anselmo	Marin County	California	United States
Single-family, detached	76.9% (±4.6 points)	63.2%	57.0%	61.3%
Single-family, attached (townhouse, rowhouse)	2.4% (±1.6 points)	7.7%	7.4%	6.2%
2 units	4.9% (±2.8 points)	3.5%	2.4%	3.4%
3 or 4 units	6.1% (±2.7 points)	4.9%	5.4%	4.3%
5 to 9 units	3.5% (±1.9 points)	6.0%	5.7%	4.5%
10 to 19 units	2.4% (±1.5 points)	4.2%	4.9%	4.3%
20 or more units	3.8% (±2.1 points)	8.9%	13.6%	10.3%
Mobile home	0.0% (±0.8 points)	1.3%	3.5%	5.6%
Boat, RV, van, etc.	0.0% (±0.8 points)	0.3%	0.1%	0.1%

In San Anselmo, the share of homes in buildings of five or more units is lower than in Marin County (19.1%).

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

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

Homes in buildings of 5 or more units in places near San Anselmo

Nearest places with a published estimate, compared with San Anselmo
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
San Anselmo	—	9.7% (±3.2 points)	—
Ross	1.3 mi	0.0% (±7.8 points)	Lower
Fairfax	1.4 mi	11.1% (±5.0 points)	Not measurably different
Sleepy Hollow	2.3 mi	0.0% (±6.2 points)	Lower
Kentfield	3.3 mi	8.6% (±3.5 points)	Not measurably different
San Rafael	3.4 mi	31.6% (±3.0 points)	Higher
Larkspur	3.6 mi	45.1% (±6.3 points)	Higher
Santa Venetia	4.0 mi	14.4% (±8.6 points)	Not measurably different
Lucas Valley-Marinwood	4.1 mi	0.5% (±2.5 points)	Lower

Nearby places with a measurably lower figure: Ross, CA (0.0%), Sleepy Hollow, CA (0.0%), Lucas Valley-Marinwood, CA (0.5%).

Nearby places with a measurably higher figure: San Rafael, CA (31.6%), Larkspur, CA (45.1%).

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 Marin County, place by place

Rank	Place	Homes in buildings of 5 or more units
7	Novato	20.3% (±2.6 points)
8	Santa Venetia	14.4% (±8.6 points)
9	Corte Madera	13.7% (±4.9 points)
10 (tie)	Mill Valley	13.3% (±3.9 points)
10 (tie)	Sausalito	13.3% (±3.2 points)
12	Fairfax	11.1% (±5.0 points)
13	San Anselmo	9.7% (±3.2 points)
14	Kentfield	8.6% (±3.5 points)
15	Belvedere	2.6% (±4.3 points)
16	Tamalpais-Homestead Valley	2.0% (±1.3 points)
17	Lucas Valley-Marinwood	0.5% (±2.5 points)
18 (tie)	Ross	0.0% (±7.8 points)
18 (tie)	Black Point-Green Point	0.0% (±9.5 points)

Showing 13 of 24 places in Marin County, ranked from highest to lowest.

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 San Anselmo

How many homes are in San Anselmo?

San Anselmo, CA has an estimated 5,498 (±323) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in San Anselmo houses or apartments?

76.9% are detached houses and 2.4% attached houses, while 20.7% are in buildings of two or more units.

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

11.0% of homes in San Anselmo 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 — San Anselmo town, 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 San Anselmo town, California (place:64434, 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.