Population 27,145 · Census ACS 2020–24
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Population and households in Castaic
Household size in Castaic
| Period | Castaic | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.30 | 3.14 | 3.04 | 2.68 |
| 2010–14 | 3.28 | 3.20 | 3.10 | 2.73 |
| 2015–19 | 3.35 | 3.16 | 3.09 | 2.71 |
| 2020–24 | 3.21 | 3.01 | 3.01 | 2.65 |
| Change | −0.09 | −0.13 | −0.03 | −0.03 |
Households in Castaic are large by national standards, averaging 3.21 people against 2.65 for the U.S. That usually means more families with children at home. Household size has dropped from 3.30 in 2006–10, mirroring the country.
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 Castaic
| Period | Castaic | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 34.3 | 35.6 | 35.8 | 37.7 |
| 2010–14 | 34.7 | 36.7 | 36.8 | 38.6 |
| 2015–19 | 36.9 | 38.0 | 37.9 | 39.6 |
| 2020–24 | 36.8 | 39.5 | 39.0 | 40.1 |
| Change | +2.4 | +4.0 | +3.1 | +2.3 |
The median resident of Castaic is 36.8 years old, a few years younger than the national median of 40.1. Since 2006–10, the median age has climbed from 34.3, as it has nationally. Residents skew youngest in the east and oldest in the center.
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 Castaic
| Period | Castaic | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 11.0% | 14.3% | 13.5% | 12.3% |
| 2010–14 | 11.6% | 14.1% | 13.5% | 12.3% |
| 2015–19 | 9.3% | 12.5% | 12.3% | 11.6% |
| 2020–24 | 6.6% | 12.3% | 12.3% | 11.6% |
| Change | −4.4 pts | −2.0 pts | −1.2 pts | −0.6 pts |
Single-parent households are relatively rare in Castaic: 6.6% of households, against 11.6% nationally. The single-parent share is down 4.4 points from 2006–10, a much bigger shift than nationally. Castaic has a lower share of single-parent households than at least four in five California cities.
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 Castaic
Renters in Castaic
| Period | Castaic | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 17.7% | 48.8% | 42.6% | 33.3% |
| 2010–14 | 19.6% | 50.8% | 45.2% | 35.6% |
| 2015–19 | 16.0% | 51.4% | 45.2% | 36.0% |
| 2020–24 | 16.5% | 51.6% | 44.1% | 34.8% |
| Change | −1.1 pts | +2.8 pts | +1.5 pts | +1.5 pts |
Only 16.5% of households in Castaic rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 19.6% have no mortgage at all, well below the national share of 39.8%. The renter share is down 1.1 points from 2006–10, even as the national share rose. Only 57 of the 689 California cities with 5,000+ people have a lower share of renters.
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 Castaic
| Period | Castaic | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.4% | 7.0% | 8.7% | 11.4% |
| 2010–14 | 5.5% | 6.7% | 8.1% | 11.4% |
| 2015–19 | 2.8% | 6.6% | 7.5% | 11.1% |
| 2020–24 | 3.5% | 6.7% | 7.3% | 9.6% |
| Change | −1.9 pts | −0.3 pts | −1.4 pts | −1.8 pts |
Empty homes are scarce in Castaic: just 3.5% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. Since 2006–10, vacancy has fallen 1.9 points, mirroring the country. Only 32 of the 689 California cities with 5,000+ people 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 Castaic
| Period | Castaic | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 1986 | 1965 | 1972 | 1974 |
| 2010–14 | 1992 | 1966 | 1973 | 1975 |
| 2015–19 | 1992 | 1966 | 1974 | 1977 |
| 2020–24 | 1993 | 1969 | 1976 | 1980 |
| Change | +7 | +4 | +4 | +6 |
Much of the housing in Castaic is relatively new: half of its homes were built after 1993, compared with 1980 for the U.S. as a whole. The median year built has moved up from 1986 in 2006–10, a sign of steady new building. Newer construction is concentrated in the southeast, while the north has the oldest housing.
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 Castaic
| Period | Castaic | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,650 | $1,328 | $1,298 | $965 |
| 2010–14 | $1,511 | $1,415 | $1,379 | $1,040 |
| 2015–19 | $2,081 | $1,755 | $1,721 | $1,213 |
| 2020–24 | $2,401 | $2,279 | $2,229 | $1,571 |
| Change | +$751 | +$951 | +$931 | +$606 |
The median renter in Castaic pays $2,401 a month for rent and utilities, well above the national median of $1,571. Rents are up $751 a month from 2006–10, a 46% rise, a slower climb than the nation's. The typical renter here spends 35.4% 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 southeast and lowest in the southwest.
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 Castaic
Bachelor's degrees in Castaic
| Period | Castaic | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 25.7% | 29.7% | 29.1% | 28.4% |
| 2010–14 | 26.0% | 30.7% | 30.1% | 29.6% |
| 2015–19 | 28.0% | 33.7% | 32.9% | 32.1% |
| 2020–24 | 33.5% | 37.6% | 36.3% | 35.6% |
| Change | +7.8 pts | +7.9 pts | +7.1 pts | +7.2 pts |
About a third of adults 25 and older in Castaic (33.5%) hold at least a bachelor's degree, close to the national share of 35.6%. The share is lower than in the wider Los Angeles area (37.6%). Since 2006–10, the share with a degree has risen 7.8 points, mirroring the country.
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 Castaic
| Period | Castaic | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 83.3% | 76.7% | 79.9% | 84.9% |
| 2010–14 | 82.6% | 77.7% | 80.7% | 86.1% |
| 2015–19 | 83.7% | 80.0% | 82.6% | 87.7% |
| 2020–24 | 84.9% | 82.1% | 84.2% | 89.3% |
| Change | +1.5 pts | +5.4 pts | +4.3 pts | +4.3 pts |
Just over one in seven adults in Castaic never finished high school, more than nationally: 84.9% have a diploma or equivalent, against 89.3% across the U.S. Even so, the rate is higher than in the Los Angeles area as a whole (82.1%). The share with a diploma is up 1.5 points from 2006–10, mirroring the country.
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 Castaic
| Period | Castaic | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.1% | 8.5% | 9.2% | 8.1% |
| 2010–14 | 11.3% | 10.6% | 11.3% | 9.4% |
| 2015–19 | 5.8% | 5.8% | 6.3% | 5.6% |
| 2020–24 | 5.7% | 6.7% | 6.6% | 5.4% |
| Change | −1.4 pts | −1.7 pts | −2.6 pts | −2.7 pts |
At 5.7%, unemployment in Castaic is close to the national rate of 5.4%. The rate is lower than in the wider Los Angeles area (6.7%). 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).
Castaic 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Castaic | 3.21 | 36.8 | 6.6% | 16.5% | 3.5% | 1993 | $2,401 | 33.5% | 84.9% | 5.7% |
| Valencia | 2.61 | 43.0 | 5.6% | 36.1% | 4.8% | 1988 | $2,863 | 50.1% | 96.9% | 6.4% |
| Santa Clarita | 3.05 | 41.7 | 8.4% | 19.9% | 3.3% | 1991 | $2,915 | 47.6% | 95.1% | 5.4% |
| Stevenson Ranch | 3.00 | 40.9 | 7.2% | 35.5% | 1.7% | 2000 | $3,059 | 59.4% | 96.9% | 9.0% |
| Newhall | 3.17 | 37.5 | 11.9% | 39.8% | 6.3% | 1980 | $2,357 | 33.6% | 85.0% | 5.8% |
| Piru | 3.62 | 32.2 | 14.3% | 33.9% | 9.7% | 1997 | $1,860 | 13.7% | 67.9% | 9.0% |
| Canyon Country | 3.21 | 38.5 | 12.0% | 28.4% | 4.4% | 1989 | $2,671 | 30.7% | 86.7% | 5.8% |
| Buckhorn | 3.53 | 30.9 | 9.7% | 58.8% | 11.0% | 1979 | $1,521 | 13.1% | 77.9% | 7.2% |
| Sylmar | 3.77 | 37.8 | 15.2% | 31.4% | 5.0% | 1974 | $2,175 | 19.9% | 72.6% | 7.3% |
| Fillmore | 3.35 | 35.2 | 13.3% | 33.1% | 4.5% | 1981 | $1,958 | 16.5% | 77.4% | 3.7% |
| Agua Dulce | 2.85 | 52.1 | 4.6% | 8.6% | 7.2% | 1979 | $2,354 | 23.1% | 89.3% | 9.4% |
All figures 2020–24.
Cities with similar populations: Zionsville, IN · Miccosukee Cpo, FL · Maryland Heights, MO · Uniondale, NY · Collinsville, IL · Magna, UT · Wasco, CA · Waynesboro, VA · Wellesley, MA · West Springfield Town, MA
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 Castaic. 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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