Population 342 · Census ACS 2020–24
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Population and households in San Geronimo
Household size in San Geronimo
| Period | San Geronimo | San Francisco area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.63 | 2.74 | 3.04 | 2.68 |
| 2010–14 | 2.33 | 2.79 | 3.10 | 2.73 |
| 2015–19 | 2.29 | 2.83 | 3.09 | 2.71 |
| 2020–24 | 2.49 | 2.75 | 3.01 | 2.65 |
| Change | −0.13 | +0.01 | −0.03 | −0.03 |
The average household in San Geronimo has 2.49 people, a bit under the U.S. average of 2.65. Since 2006–10, household size has dropped from 2.63, but in a place this small, survey estimates can swing a lot from one release to the next.
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 Geronimo
| Period | San Geronimo | San Francisco area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 52.4 | 38.6 | 35.8 | 37.7 |
| 2010–14 | 51.1 | 39.4 | 36.8 | 38.6 |
| 2015–19 | 59.2 | 40.1 | 37.9 | 39.6 |
| 2020–24 | 47.5 | 41.3 | 39.0 | 40.1 |
| Change | −4.9 | +2.7 | +3.1 | +2.3 |
San Geronimo skews older: half of its residents are older than 47.5, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.
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 Geronimo
| Period | San Geronimo | San Francisco area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.2% | 10.3% | 13.5% | 12.3% |
| 2010–14 | 6.5% | 9.9% | 13.5% | 12.3% |
| 2015–19 | 11.3% | 9.1% | 12.3% | 11.6% |
| 2020–24 | 6.2% | 8.8% | 12.3% | 11.6% |
| Change | −1.1 pts | −1.5 pts | −1.2 pts | −0.6 pts |
Single parents head only 6.2% of households in San Geronimo, well below the national share of 11.6%.
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 Geronimo
Renters in San Geronimo
| Period | San Geronimo | San Francisco area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.6% | 43.7% | 42.6% | 33.3% |
| 2010–14 | 35.5% | 46.2% | 45.2% | 35.6% |
| 2015–19 | 15.0% | 45.3% | 45.2% | 36.0% |
| 2020–24 | 12.8% | 44.5% | 44.1% | 34.8% |
| Change | +3.3 pts | +0.8 pts | +1.5 pts | +1.5 pts |
San Geronimo is overwhelmingly a place of homeowners: only 12.8% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 45.9% have no mortgage at all, above the national share of 39.8%.
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 Geronimo
| Period | San Geronimo | San Francisco area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.6% | 8.6% | 8.7% | 11.4% |
| 2010–14 | 7.0% | 7.1% | 8.1% | 11.4% |
| 2015–19 | 8.0% | 6.5% | 7.5% | 11.1% |
| 2020–24 | 8.7% | 7.5% | 7.3% | 9.6% |
| Change | +3.1 pts | −1.1 pts | −1.4 pts | −1.8 pts |
About as many homes sit empty in San Geronimo as nationally: 8.7%, against 9.6%.
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 Geronimo
| Period | San Geronimo | San Francisco area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 1966 | 1964 | 1972 | 1974 |
| 2010–14 | 1963 | 1965 | 1973 | 1975 |
| 2015–19 | 1957 | 1966 | 1974 | 1977 |
| 2020–24 | 1968 | 1968 | 1976 | 1980 |
| Change | +2 | +4 | +4 | +6 |
San Geronimo is a place of older homes: half were built before 1968, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. The picture is much the same across the San Francisco area.
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 Geronimo
| Period | San Geronimo | San Francisco area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,476 | $1,452 | $1,298 | $965 |
| 2010–14 | $1,839 | $1,551 | $1,379 | $1,040 |
| 2015–19 | $2,379 | $2,139 | $1,721 | $1,213 |
| 2020–24 | $2,316 | $2,666 | $2,229 | $1,571 |
| Change | +$840 | +$1,214 | +$931 | +$606 |
The median renter in San Geronimo pays $2,316 a month for rent and utilities, well above the national median of $1,571. Still, rents here are lower than in the San Francisco area overall ($2,666). The typical renter here spends 29.9% of household income on rent, just under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally.
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 Geronimo
Bachelor's degrees in San Geronimo
| Period | San Geronimo | San Francisco area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 62.7% | 42.5% | 29.1% | 28.4% |
| 2010–14 | 77.2% | 44.1% | 30.1% | 29.6% |
| 2015–19 | 54.5% | 48.9% | 32.9% | 32.1% |
| 2020–24 | 85.0% | 52.2% | 36.3% | 35.6% |
| Change | +22.3 pts | +9.7 pts | +7.1 pts | +7.2 pts |
College graduates are unusually common in San Geronimo: 85.0% of adults 25 and older have a bachelor's degree or higher, against 35.6% nationally. Education tends to track local incomes and the kinds of jobs nearby.
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 Geronimo
| Period | San Geronimo | San Francisco area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 97.3% | 86.8% | 79.9% | 84.9% |
| 2010–14 | 99.4% | 87.5% | 80.7% | 86.1% |
| 2015–19 | 97.4% | 88.8% | 82.6% | 87.7% |
| 2020–24 | 97.7% | 89.1% | 84.2% | 89.3% |
| Change | +0.4 pts | +2.3 pts | +4.3 pts | +4.3 pts |
Finishing high school is nearly universal in San Geronimo: 97.7% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.
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 Geronimo
| Period | San Geronimo | San Francisco area | California | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.3% | 7.8% | 9.2% | 8.1% |
| 2010–14 | 6.8% | 8.9% | 11.3% | 9.4% |
| 2015–19 | 0.7% | 4.6% | 6.3% | 5.6% |
| 2020–24 | 0.3% | 5.8% | 6.6% | 5.4% |
| Change | −5.0 pts | −2.0 pts | −2.6 pts | −2.7 pts |
Unemployment in San Geronimo has been low: just 0.3% of the labor force was out of work and looking, well below the national rate of 5.4%. 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).
San Geronimo 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 Geronimo | 2.49 | 47.5 | 6.2% | 12.8% | 8.7% | 1968 | $2,316 | 85.0% | 97.7% | 0.3% |
| Lagunitas-Forest Knolls | 2.12 | 51.7 | 6.2% | 21.4% | 11.2% | 1962 | $2,365 | 68.8% | 97.0% | 1.8% |
| Forest Knolls | 2.09 | 52.2 | 5.3% | 22.7% | 11.9% | 1962 | $2,370 | 60.7% | 96.6% | 2.7% |
| Woodacre | 2.64 | 54.2 | 4.2% | 11.0% | 8.1% | 1956 | $2,374 | 65.2% | 94.3% | 2.6% |
| Lagunitas | 1.95 | 53.6 | 6.2% | 24.6% | 12.7% | 1959 | $2,380 | 61.0% | 96.6% | 2.4% |
| Nicasio | 2.68 | 46.4 | 1.7% | 18.5% | 9.9% | 1975 | $2,300 | 58.1% | 96.7% | 3.7% |
| Sleepy Hollow | 2.55 | 55.0 | 11.3% | 16.1% | 6.5% | 1960 | $3,187 | 74.2% | 98.0% | 7.6% |
| Fairfax | 2.32 | 48.3 | 7.2% | 29.7% | 5.8% | 1950 | $2,937 | 69.7% | 98.9% | 13.0% |
| Tocaloma | 2.16 | 52.6 | 1.8% | 56.2% | 25.2% | 1960 | $2,038 | 43.9% | 96.8% | 3.0% |
| San Anselmo | 2.46 | 48.2 | 8.5% | 30.1% | 5.6% | 1954 | $3,050 | 69.7% | 98.0% | 7.5% |
| Olema | 1.88 | 55.4 | 1.3% | 78.1% | 34.7% | 1956 | $1,992 | 35.2% | 96.9% | 2.1% |
All figures 2020–24.
Cities with similar populations: Grenora, ND · Sheridan, LA · Shelburne, MA · Shady Grove, KY · Highland Spring, KY · Hamilton, PA · Hagensville, MI · Hadar, NE · Hackney, OH · Guldens, PA
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 Geronimo. 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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