Population 128,462 · Census ACS 2020–24
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Population and households in Simi Valley
Household size in Simi Valley
| Period | Simi Valley | Oxnard area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.06 | 3.14 | 3.04 | 2.68 |
| 2010–14 | 3.03 | 3.23 | 3.10 | 2.73 |
| 2015–19 | 3.02 | 3.25 | 3.09 | 2.71 |
| 2020–24 | 2.88 | 3.11 | 3.01 | 2.65 |
| Change | −0.17 | −0.04 | −0.03 | −0.03 |
The typical household in Simi Valley holds 2.88 people, more than the U.S. average of 2.65. Locally, though, the typical household here is smaller than in the wider Oxnard area, where it has 3.11 people. Since 2006–10, household size has dropped from 3.06, a much bigger shift than nationally.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Simi Valley
| Period | Simi Valley | Oxnard area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 37.6 | 37.0 | 35.8 | 37.7 |
| 2010–14 | 39.6 | 38.1 | 36.8 | 38.6 |
| 2015–19 | 41.0 | 39.5 | 37.9 | 39.6 |
| 2020–24 | 42.7 | 40.8 | 39.0 | 40.1 |
| Change | +5.1 | +3.8 | +3.1 | +2.3 |
The median resident of Simi Valley is 42.7 years old, a bit older than the national median of 40.1. Since 2006–10, the median age has climbed from 37.6, as it has nationally. Residents skew youngest in the west and oldest in the northeast.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Simi Valley
| Period | Simi Valley | Oxnard area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 11.3% | 12.1% | 13.5% | 12.3% |
| 2010–14 | 10.3% | 12.4% | 13.5% | 12.3% |
| 2015–19 | 9.0% | 11.1% | 12.3% | 11.6% |
| 2020–24 | 7.5% | 11.1% | 12.3% | 11.6% |
| Change | −3.9 pts | −1.1 pts | −1.2 pts | −0.6 pts |
Single-parent households are relatively rare in Simi Valley: 7.5% of households, against 11.6% nationally. The single-parent share has fallen 3.9 points since 2006–10, a much bigger shift than nationally.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Simi Valley
Renters in Simi Valley
| Period | Simi Valley | Oxnard area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 24.9% | 33.6% | 42.6% | 33.3% |
| 2010–14 | 26.7% | 35.5% | 45.2% | 35.6% |
| 2015–19 | 27.6% | 36.8% | 45.2% | 36.0% |
| 2020–24 | 26.6% | 35.4% | 44.1% | 34.8% |
| Change | +1.7 pts | +1.8 pts | +1.5 pts | +1.5 pts |
Most households in Simi Valley own their homes; 26.6% rent, below the national share of 34.8%. Among owners, 26.9% have paid off their mortgages, well below the national share of 39.8%. Renting is most common in the west and least common in the south. Since 2006–10, the renter share has risen 1.7 points, in line with the national trend.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Simi Valley
| Period | Simi Valley | Oxnard area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.4% | 6.3% | 8.7% | 11.4% |
| 2010–14 | 3.5% | 5.7% | 8.1% | 11.4% |
| 2015–19 | 4.3% | 6.4% | 7.5% | 11.1% |
| 2020–24 | 2.8% | 5.7% | 7.3% | 9.6% |
| Change | −1.6 pts | −0.5 pts | −1.4 pts | −1.8 pts |
Empty homes are scarce in Simi Valley: just 2.8% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. Since 2006–10, vacancy has fallen 1.6 points, as it has nationally. Of the 689 California cities with 5,000+ people, only nine have a lower vacancy rate.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Simi Valley
| Period | Simi Valley | Oxnard area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 1978 | 1975 | 1972 | 1974 |
| 2010–14 | 1978 | 1976 | 1973 | 1975 |
| 2015–19 | 1979 | 1976 | 1974 | 1977 |
| 2020–24 | 1979 | 1978 | 1976 | 1980 |
| Change | +2 | +3 | +4 | +6 |
Homes in Simi Valley are about the same age as the nation's housing: the median home was built in 1979, versus 1980 nationally. The newest homes are mostly in the southwest, the oldest in the center.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Simi Valley
| Period | Simi Valley | Oxnard area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,685 | $1,529 | $1,298 | $965 |
| 2010–14 | $1,764 | $1,601 | $1,379 | $1,040 |
| 2015–19 | $2,300 | $2,005 | $1,721 | $1,213 |
| 2020–24 | $2,785 | $2,498 | $2,229 | $1,571 |
| Change | +$1,101 | +$969 | +$931 | +$606 |
A typical rental in Simi Valley costs $2,785 a month with utilities, well above the national median of $1,571. Rent has climbed $1,101 a month since 2006–10, up 65%, roughly in step with the nation. The typical renter here spends 37.7% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched. Rents run highest in the north and lowest in the east.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Simi Valley
Bachelor's degrees in Simi Valley
| Period | Simi Valley | Oxnard area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 30.7% | 29.7% | 29.1% | 28.4% |
| 2010–14 | 32.4% | 30.7% | 30.1% | 29.6% |
| 2015–19 | 33.9% | 33.0% | 32.9% | 32.1% |
| 2020–24 | 38.7% | 35.5% | 36.3% | 35.6% |
| Change | +8.0 pts | +5.8 pts | +7.1 pts | +7.2 pts |
College degrees are a bit more common in Simi Valley than nationally: 38.7% of adults 25 and older have a bachelor's or higher, against 35.6%. The share with a degree has risen 8.0 points since 2006–10, in line with the national trend. College graduates are most concentrated in the southwest and least in the center.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Simi Valley
| Period | Simi Valley | Oxnard area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 90.0% | 81.0% | 79.9% | 84.9% |
| 2010–14 | 90.6% | 81.7% | 80.7% | 86.1% |
| 2015–19 | 91.9% | 84.1% | 82.6% | 87.7% |
| 2020–24 | 90.7% | 84.5% | 84.2% | 89.3% |
| Change | +0.7 pts | +3.4 pts | +4.3 pts | +4.3 pts |
About as many adults in Simi Valley have finished high school as nationally: 90.7%, against 89.3%. The rate is higher than in the Oxnard area as a whole (84.5%). Since 2006–10, the share with a diploma has edged up 0.7 points, a smaller shift than nationally.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Simi Valley
| Period | Simi Valley | Oxnard area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.6% | 7.2% | 9.2% | 8.1% |
| 2010–14 | 8.2% | 9.4% | 11.3% | 9.4% |
| 2015–19 | 4.5% | 5.1% | 6.3% | 5.6% |
| 2020–24 | 5.0% | 5.7% | 6.6% | 5.4% |
| Change | −0.6 pts | −1.5 pts | −2.6 pts | −2.7 pts |
At 5.0%, unemployment in Simi Valley is close to the national rate of 5.4%. The rate is lower than in the wider Oxnard area (5.7%). Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Simi Valley compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Simi Valley | 2.88 | 42.7 | 7.5% | 26.6% | 2.8% | 1979 | $2,785 | 38.7% | 90.7% | 5.0% |
| Brandeis | 2.48 | 39.1 | 3.4% | 56.9% | 6.4% | 2005 | $2,535 | 53.3% | 86.9% | 2.9% |
| Virginia Colony | 3.04 | 47.3 | 5.4% | 21.5% | 3.6% | 1989 | $2,663 | 39.1% | 90.8% | 4.4% |
| Oak Park | 2.73 | 43.6 | 8.7% | 28.1% | 5.4% | 1984 | $3,106 | 63.3% | 98.5% | 6.8% |
| West Hills | 2.91 | 45.5 | 7.6% | 17.8% | 4.4% | 1969 | $3,382 | 55.9% | 95.0% | 9.8% |
| Moorpark | 3.32 | 40.1 | 8.7% | 20.9% | 5.4% | 1989 | $2,754 | 43.3% | 88.6% | 5.1% |
| Thousand Oaks | 2.64 | 44.7 | 6.1% | 28.7% | 3.9% | 1977 | $2,913 | 49.5% | 94.0% | 6.0% |
| Chatsworth | 2.78 | 44.7 | 7.7% | 31.9% | 4.4% | 1974 | $2,770 | 46.4% | 91.5% | 5.5% |
| Agoura Hills | 2.78 | 46.7 | 7.4% | 17.2% | 6.3% | 1978 | $3,211 | 64.4% | 97.1% | 5.2% |
| Hidden Hills | 3.12 | 47.7 | 10.6% | 8.4% | 7.1% | 1970 | $3,500 | 72.3% | 97.3% | 2.5% |
| Canoga Park | 2.76 | 37.9 | 12.9% | 70.3% | 6.9% | 1977 | $2,342 | 35.0% | 82.3% | 7.4% |
All figures 2020–24.
Cities with similar populations: St. Petersburg, FL · Springfield, OR · Staten Island, NY · St. Cloud, FL · San Bernardino, CA · Rochester, NY · Santa Ana, CA · Roseville, CA · San Ramon, CA · San Leandro, CA
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Simi Valley. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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