Population 96,898 · Census ACS 2020–24
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Population and households in ZIP 91331
Household size in ZIP 91331
| Period | ZIP 91331 | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.53 | 3.14 | 3.04 | 2.68 |
| 2010–14 | 4.57 | 3.20 | 3.10 | 2.73 |
| 2015–19 | 4.54 | 3.16 | 3.09 | 2.71 |
| 2020–24 | 4.25 | 3.01 | 3.01 | 2.65 |
| Change | −0.28 | −0.13 | −0.03 | −0.03 |
ZIP 91331 is a place of big households: 4.25 people per home on average, compared with 2.65 nationally. Numbers like that usually point to plenty of families with kids. Household size has dropped from 4.53 in 2006–10, a much bigger shift than nationally. Only 11 of the 1,131 California ZIP codes with 5,000+ people have larger households.
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 ZIP 91331
| Period | ZIP 91331 | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 29.4 | 35.6 | 35.8 | 37.7 |
| 2010–14 | 31.4 | 36.7 | 36.8 | 38.6 |
| 2015–19 | 33.4 | 38.0 | 37.9 | 39.6 |
| 2020–24 | 36.1 | 39.5 | 39.0 | 40.1 |
| Change | +6.7 | +4.0 | +3.1 | +2.3 |
ZIP 91331 is young: half of its residents are under 36.1, compared with a national median of 40.1. The population tilts toward young families with children. The median age has climbed from 29.4 in 2006–10, in line with the national trend.
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 ZIP 91331
| Period | ZIP 91331 | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 22.9% | 14.3% | 13.5% | 12.3% |
| 2010–14 | 21.6% | 14.1% | 13.5% | 12.3% |
| 2015–19 | 18.5% | 12.5% | 12.3% | 11.6% |
| 2020–24 | 18.1% | 12.3% | 12.3% | 11.6% |
| Change | −4.8 pts | −2.0 pts | −1.2 pts | −0.6 pts |
Single-parent households are common in ZIP 91331: 18.1% of all households, against 11.6% nationally. Since 2006–10, the single-parent share has fallen 4.8 points, a much bigger shift than nationally. ZIP 91331 has a higher share of single-parent households than at least four in five California ZIP codes.
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 ZIP 91331
Renters in ZIP 91331
| Period | ZIP 91331 | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 39.6% | 48.8% | 42.6% | 33.3% |
| 2010–14 | 41.4% | 50.8% | 45.2% | 35.6% |
| 2015–19 | 39.2% | 51.4% | 45.2% | 36.0% |
| 2020–24 | 37.8% | 51.6% | 44.1% | 34.8% |
| Change | −1.9 pts | +2.8 pts | +1.5 pts | +1.5 pts |
Renting in ZIP 91331 is about as common as it is nationally: 37.8% of households rent, against 34.8%. Renters make up a smaller share here than in the Los Angeles area overall (51.6%). Among homeowners, 33.2% have no mortgage at all, below the national share of 39.8%. Since 2006–10, the renter share has fallen 1.9 points, even as the national share rose.
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 ZIP 91331
| Period | ZIP 91331 | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.0% | 7.0% | 8.7% | 11.4% |
| 2010–14 | 5.6% | 6.7% | 8.1% | 11.4% |
| 2015–19 | 4.0% | 6.6% | 7.5% | 11.1% |
| 2020–24 | 4.2% | 6.7% | 7.3% | 9.6% |
| Change | −1.7 pts | −0.3 pts | −1.4 pts | −1.8 pts |
Empty homes are scarce in ZIP 91331: just 4.2% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. Since 2006–10, vacancy has fallen 1.7 points, in line with the national trend. ZIP 91331 has a lower vacancy rate than the great majority of California ZIP codes.
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 ZIP 91331
| Period | ZIP 91331 | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 1960 | 1965 | 1972 | 1974 |
| 2010–14 | 1961 | 1966 | 1973 | 1975 |
| 2015–19 | 1961 | 1966 | 1974 | 1977 |
| 2020–24 | 1962 | 1969 | 1976 | 1980 |
| Change | +2 | +4 | +4 | +6 |
ZIP 91331 is a place of older homes: half were built before 1962, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. Newer construction is concentrated in the northeast, while the center 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 ZIP 91331
| Period | ZIP 91331 | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,231 | $1,328 | $1,298 | $965 |
| 2010–14 | $1,355 | $1,415 | $1,379 | $1,040 |
| 2015–19 | $1,522 | $1,755 | $1,721 | $1,213 |
| 2020–24 | $2,091 | $2,279 | $2,229 | $1,571 |
| Change | +$861 | +$951 | +$931 | +$606 |
Rent in ZIP 91331 runs $2,091 a month at the median, utilities included, well above the U.S. median of $1,571. Even so, rents here are lower than in the Los Angeles area overall ($2,279). Rents are up $861 a month from 2006–10, a 70% jump, faster than rents rose nationally. The typical renter here spends 38.0% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
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 ZIP 91331
Bachelor's degrees in ZIP 91331
| Period | ZIP 91331 | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.8% | 29.7% | 29.1% | 28.4% |
| 2010–14 | 8.3% | 30.7% | 30.1% | 29.6% |
| 2015–19 | 10.8% | 33.7% | 32.9% | 32.1% |
| 2020–24 | 11.3% | 37.6% | 36.3% | 35.6% |
| Change | +2.5 pts | +7.9 pts | +7.1 pts | +7.2 pts |
College degrees are relatively uncommon in ZIP 91331: 11.3% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%. The share with a degree has risen 2.5 points since 2006–10, as it has nationally. Of the 1,131 California ZIP codes with 5,000+ people, only 89 have a lower share of college graduates.
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 ZIP 91331
| Period | ZIP 91331 | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 47.6% | 76.7% | 79.9% | 84.9% |
| 2010–14 | 51.4% | 77.7% | 80.7% | 86.1% |
| 2015–19 | 56.8% | 80.0% | 82.6% | 87.7% |
| 2020–24 | 57.9% | 82.1% | 84.2% | 89.3% |
| Change | +10.3 pts | +5.4 pts | +4.3 pts | +4.3 pts |
Just over four in ten adults in ZIP 91331 never finished high school, well above the national share: only 57.9% have a diploma or equivalent, against 89.3% nationally. Since 2006–10, the share with a diploma has risen 10.3 points, as it has nationally. Only 40 of the 1,131 California ZIP codes with 5,000+ people have a lower share of high school graduates.
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 ZIP 91331
| Period | ZIP 91331 | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.9% | 8.5% | 9.2% | 8.1% |
| 2010–14 | 14.5% | 10.6% | 11.3% | 9.4% |
| 2015–19 | 5.9% | 5.8% | 6.3% | 5.6% |
| 2020–24 | 6.8% | 6.7% | 6.6% | 5.4% |
| Change | −3.0 pts | −1.7 pts | −2.6 pts | −2.7 pts |
Jobs have been harder to find in ZIP 91331 than nationally: unemployment was 6.8%, against 5.4%. Unemployment is down 3.0 points from 2006–10, as it has nationally. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current 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).
ZIP 91331 compared with nearby ZIP codes
| ZIP code | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| ZIP 91331 | 4.25 | 36.1 | 18.1% | 37.8% | 4.2% | 1962 | $2,091 | 11.3% | 57.9% | 6.8% |
| ZIP 91345 | 3.40 | 41.6 | 11.6% | 30.6% | 4.3% | 1961 | $2,332 | 21.2% | 78.3% | 6.1% |
| ZIP 91340 | 3.97 | 37.2 | 16.0% | 35.4% | 6.9% | 1958 | $1,944 | 14.1% | 64.7% | 6.9% |
| ZIP 91402 | 3.33 | 35.8 | 19.5% | 66.7% | 3.4% | 1967 | $1,817 | 19.2% | 67.0% | 9.7% |
| ZIP 91343 | 3.33 | 37.5 | 14.1% | 52.3% | 4.8% | 1970 | $2,171 | 26.0% | 76.4% | 6.8% |
| ZIP 91342 | 3.73 | 38.0 | 14.8% | 31.9% | 5.0% | 1974 | $2,169 | 20.0% | 72.7% | 7.5% |
| ZIP 91352 | 3.74 | 37.0 | 16.0% | 49.7% | 6.4% | 1964 | $2,005 | 18.0% | 66.7% | 7.4% |
| ZIP 91605 | 3.19 | 38.3 | 13.7% | 61.5% | 7.9% | 1964 | $1,862 | 21.7% | 72.6% | 8.5% |
| ZIP 91405 | 2.98 | 36.8 | 15.7% | 71.1% | 5.9% | 1971 | $1,846 | 25.9% | 75.7% | 9.0% |
| ZIP 91344 | 2.97 | 44.7 | 8.0% | 26.2% | 4.9% | 1964 | $2,789 | 39.9% | 89.4% | 8.3% |
| ZIP 91606 | 2.80 | 38.6 | 11.5% | 68.7% | 6.0% | 1963 | $1,870 | 26.6% | 79.4% | 8.8% |
All figures 2020–24.
Zip codes with similar populations: 77084, TX · 10025, NY · 78245, TX · 90650, CA · 77433, TX · 75052, TX · 92503, CA · 11385, NY · 11377, NY · 11373, NY
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 ZIP 91331. 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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