What kinds of homes are in Simi Valley, CA?

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

Simi Valley, CA has 45,290 (±792) homes (2020–2024 American Community Survey).

That is about 1,090 homes per square mile of land.

71.3% are detached single-family houses.

5.8% are in buildings of two to four units.

12.9% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 45,290 (±792)
Detached houses: 71.3%
2–4 unit buildings: 5.8%
5+ unit buildings: 12.9%

Homes in Simi Valley by building size

Housing units by units in structure, 2020–2024
Building type	Simi Valley	Ventura County	California	United States
Single-family, detached	71.3% (±1.5 points)	62.7%	57.0%	61.3%
Single-family, attached (townhouse, rowhouse)	8.4% (±1.0 points)	11.1%	7.4%	6.2%
2 units	0.8% (±0.3 points)	1.4%	2.4%	3.4%
3 or 4 units	5.0% (±0.8 points)	4.5%	5.4%	4.3%
5 to 9 units	3.8% (±0.7 points)	4.5%	5.7%	4.5%
10 to 19 units	2.3% (±0.5 points)	4.0%	4.9%	4.3%
20 or more units	6.8% (±0.9 points)	7.5%	13.6%	10.3%
Mobile home	1.6% (±0.4 points)	4.1%	3.5%	5.6%
Boat, RV, van, etc.	0.0% (±0.1 points)	0.1%	0.1%	0.1%

In Simi Valley, the share of homes in buildings of five or more units is lower than in Ventura County (16.0%).

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 Simi Valley

Nearest places with a published estimate, compared with Simi Valley
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Simi Valley	—	12.9% (±1.2 points)	—
Santa Susana	4.8 mi	0.0% (±13.3 points)	Not measurably different
Bell Canyon	5.3 mi	0.0% (±10.4 points)	Lower
Oak Park	5.8 mi	12.3% (±3.5 points)	Not measurably different
Moorpark	7.5 mi	9.8% (±2.0 points)	Lower
Agoura Hills	8.2 mi	11.3% (±2.8 points)	Not measurably different
Hidden Hills	8.7 mi	0.0% (±9.7 points)	Lower
Thousand Oaks	8.8 mi	15.9% (±1.8 points)	Higher
Santa Rosa Valley	8.9 mi	0.0% (±7.1 points)	Lower

Nearby places with a measurably lower figure: Bell Canyon, CA (0.0%), Moorpark, CA (9.8%), Hidden Hills, CA (0.0%).

Nearby places with a measurably higher figure: Thousand Oaks, CA (15.9%).

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 Ventura County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Port Hueneme	25.1% (±4.1 points)
2	Oxnard	22.6% (±1.7 points)
3	San Buenaventura (Ventura)	21.5% (±1.7 points)
4	Camarillo	18.3% (±2.1 points)
5	Thousand Oaks	15.9% (±1.8 points)
6	Simi Valley	12.9% (±1.2 points)
7	Oak Park	12.3% (±3.5 points)
8	Santa Paula	10.9% (±2.4 points)
9	Moorpark	9.8% (±2.0 points)
10	Ojai	8.4% (±4.1 points)
11	Fillmore	6.7% (±2.9 points)
12	Mira Monte	4.2% (±3.3 points)

Showing 12 of 24 places in Ventura 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 Simi Valley

How many homes are in Simi Valley?

Simi Valley, CA has an estimated 45,290 (±792) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Simi Valley houses or apartments?

71.3% are detached houses and 8.4% attached houses, while 18.7% are in buildings of two or more units.

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

5.8% of homes in Simi Valley 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 — Simi Valley city, 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 Simi Valley city, California (place:72016, 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.