Population 12,966 · Census ACS 2020–24
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Population and households in San Marino
Household size in San Marino
| Period | San Marino | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.92 | 3.14 | 3.04 | 2.68 |
| 2010–14 | 2.90 | 3.20 | 3.10 | 2.73 |
| 2015–19 | 2.87 | 3.16 | 3.09 | 2.71 |
| 2020–24 | 3.08 | 3.01 | 3.01 | 2.65 |
| Change | +0.16 | −0.13 | −0.03 | −0.03 |
San Marino is a place of big households: 3.08 people per home on average, compared with 2.65 nationally. Numbers like that usually point to plenty of families with kids. Since 2006–10, household size has climbed from 2.92, even as the national average fell.
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 San Marino
| Period | San Marino | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 46.6 | 35.6 | 35.8 | 37.7 |
| 2010–14 | 46.1 | 36.7 | 36.8 | 38.6 |
| 2015–19 | 47.6 | 38.0 | 37.9 | 39.6 |
| 2020–24 | 46.7 | 39.5 | 39.0 | 40.1 |
| Change | +0.1 | +4.0 | +3.1 | +2.3 |
San Marino skews older: half of its residents are older than 46.7, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. The youngest areas are in the east, the oldest in the north.
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 San Marino
| Period | San Marino | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.3% | 14.3% | 13.5% | 12.3% |
| 2010–14 | 7.4% | 14.1% | 13.5% | 12.3% |
| 2015–19 | 7.9% | 12.5% | 12.3% | 11.6% |
| 2020–24 | 7.8% | 12.3% | 12.3% | 11.6% |
| Change | +0.5 pts | −2.0 pts | −1.2 pts | −0.6 pts |
Single-parent households are relatively rare in San Marino: 7.8% of households, against 11.6% nationally. Compared with other California cities, San Marino has a lower share of single-parent households than most.
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 San Marino
Renters in San Marino
| Period | San Marino | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.3% | 48.8% | 42.6% | 33.3% |
| 2010–14 | 14.7% | 50.8% | 45.2% | 35.6% |
| 2015–19 | 15.8% | 51.4% | 45.2% | 36.0% |
| 2020–24 | 19.6% | 51.6% | 44.1% | 34.8% |
| Change | +9.2 pts | +2.8 pts | +1.5 pts | +1.5 pts |
San Marino is largely a place of homeowners: only 19.6% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 45.2% have no mortgage at all, above the national share of 39.8%. Since 2006–10, the renter share has risen 9.2 points, a much bigger shift than nationally.
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 San Marino
| Period | San Marino | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.2% | 7.0% | 8.7% | 11.4% |
| 2010–14 | 8.2% | 6.7% | 8.1% | 11.4% |
| 2015–19 | 13.1% | 6.6% | 7.5% | 11.1% |
| 2020–24 | 13.7% | 6.7% | 7.3% | 9.6% |
| Change | +4.5 pts | −0.3 pts | −1.4 pts | −1.8 pts |
Vacancy is high in San Marino: 13.7% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand. Since 2006–10, vacancy has risen 4.5 points, even as the national rate fell.
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 San Marino
| Period | San Marino | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 1945 | 1965 | 1972 | 1974 |
| 2010–14 | 1944 | 1966 | 1973 | 1975 |
| 2015–19 | 1945 | 1966 | 1974 | 1977 |
| 2020–24 | 1947 | 1969 | 1976 | 1980 |
| Change | +2 | +4 | +4 | +6 |
San Marino is a place of older homes: half were built before 1947, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. The newest homes are mostly in the west, the oldest in the south. Of the 689 California cities with 5,000+ people, only two have older homes.
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 San Marino
| Period | San Marino | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,849 | $1,328 | $1,298 | $965 |
| 2010–14 | $1,913 | $1,415 | $1,379 | $1,040 |
| 2015–19 | $2,634 | $1,755 | $1,721 | $1,213 |
| 2020–24 | $3,424 | $2,279 | $2,229 | $1,571 |
| Change | +$1,575 | +$951 | +$931 | +$606 |
A typical rental in San Marino costs $3,424 a month with utilities, well above the national median of $1,571. Rent has climbed $1,575 a month since 2006–10, up 85%, faster than rents rose nationally. The typical renter here spends 30.2% of household income on rent, just over the 30% mark often used to define affordable rent. Rents run highest in the east and lowest in the west.
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 San Marino
Bachelor's degrees in San Marino
| Period | San Marino | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 72.4% | 29.7% | 29.1% | 28.4% |
| 2010–14 | 69.4% | 30.7% | 30.1% | 29.6% |
| 2015–19 | 78.4% | 33.7% | 32.9% | 32.1% |
| 2020–24 | 83.5% | 37.6% | 36.3% | 35.6% |
| Change | +11.1 pts | +7.9 pts | +7.1 pts | +7.2 pts |
San Marino is highly educated: just over eight in ten adults 25 and older (83.5%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree is up 11.1 points from 2006–10, as it has nationally. Only six of the 689 California cities with 5,000+ people have a higher 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 San Marino
| Period | San Marino | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 97.8% | 76.7% | 79.9% | 84.9% |
| 2010–14 | 94.8% | 77.7% | 80.7% | 86.1% |
| 2015–19 | 97.9% | 80.0% | 82.6% | 87.7% |
| 2020–24 | 97.3% | 82.1% | 84.2% | 89.3% |
| Change | −0.5 pts | +5.4 pts | +4.3 pts | +4.3 pts |
Finishing high school is nearly universal in San Marino: 97.3% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. Only 63 of the 689 California cities with 5,000+ people have a higher 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 San Marino
| Period | San Marino | Los Angeles area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.7% | 8.5% | 9.2% | 8.1% |
| 2010–14 | 5.4% | 10.6% | 11.3% | 9.4% |
| 2015–19 | 2.1% | 5.8% | 6.3% | 5.6% |
| 2020–24 | 5.9% | 6.7% | 6.6% | 5.4% |
| Change | +2.2 pts | −1.7 pts | −2.6 pts | −2.7 pts |
Unemployment in San Marino is close to the national rate: 5.9% of the labor force, against 5.4%. The rate is lower than in the wider Los Angeles area (6.7%). Since 2006–10, unemployment has risen 2.2 points, even as the national rate fell.
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).
San Marino 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| San Marino | 3.08 | 46.7 | 7.8% | 19.6% | 13.7% | 1947 | $3,424 | 83.5% | 97.3% | 5.9% |
| San Gabriel | 3.03 | 43.9 | 11.8% | 48.4% | 8.9% | 1960 | $2,133 | 38.9% | 82.9% | 6.2% |
| East Pasadena | 2.65 | 44.6 | 7.1% | 27.7% | 11.9% | 1951 | $2,180 | 58.6% | 89.7% | 4.3% |
| South Pasadena | 2.57 | 41.1 | 8.6% | 55.8% | 7.8% | 1952 | $2,460 | 73.4% | 96.9% | 5.4% |
| Pasadena | 2.42 | 41.9 | 9.0% | 56.5% | 9.2% | 1960 | $2,366 | 55.7% | 89.8% | 5.5% |
| Alhambra | 2.69 | 42.6 | 9.5% | 58.9% | 7.7% | 1961 | $1,995 | 41.3% | 84.1% | 5.3% |
| Temple City | 3.09 | 43.5 | 8.8% | 37.6% | 5.6% | 1962 | $2,373 | 41.9% | 85.7% | 6.5% |
| Rosemead | 3.45 | 45.1 | 11.3% | 51.1% | 6.7% | 1961 | $1,922 | 21.3% | 67.5% | 6.0% |
| Arcadia | 2.91 | 44.7 | 8.8% | 40.3% | 9.1% | 1968 | $2,299 | 54.6% | 91.1% | 5.5% |
| Kinneloa Mesa | 2.80 | 49.2 | 1.7% | 9.7% | 4.2% | 1964 | $3,190 | 71.9% | 98.7% | 2.8% |
| Sierra Madre | 2.40 | 45.7 | 10.1% | 44.2% | 6.8% | 1960 | $2,333 | 64.4% | 97.2% | 2.2% |
All figures 2020–24.
Cities with similar populations: Las Marias, PR · Luling, LA · Los Panes, PR · Los Llanos, PR · Accokeek, MD · Los Alamitos, CA · Longs, SC · Lockhart, FL · Little Falls, MN · Lincolnwood, IL
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 San Marino. 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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