Population 15,034 · Census ACS 2020–24
Choose a measure to map it.Tap a measure to map it. Swipe the row for more. Arrows show the change since 2006–10.
Median age by neighborhoodHistory and comparison ↓︎
Younger residents
Older residents
Colorblind friendly
off
More maps of ZIP 78121: Best Neighborhoods · Walk Grade · Household income · Home prices · Race · Politics · Traffic noise · Internet
Population and households in ZIP 78121
Household size in ZIP 78121
| Period | ZIP 78121 | San Antonio area | Texas | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.86 | 2.85 | 2.87 | 2.68 |
| 2010–14 | 2.91 | 2.93 | 2.93 | 2.73 |
| 2015–19 | 3.15 | 3.10 | 2.95 | 2.71 |
| 2020–24 | 2.93 | 2.84 | 2.83 | 2.65 |
| Change | +0.07 | −0.01 | −0.05 | −0.03 |
Households in ZIP 78121 are large by national standards, averaging 2.93 people against 2.65 for the U.S. That usually means more families with children at home. Household size has crept up from 2.86 in 2006–10, 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 ZIP 78121
| Period | ZIP 78121 | San Antonio area | Texas | U.S. |
|---|---|---|---|---|
| 2006–10 | 39.7 | 35.1 | 34.7 | 37.7 |
| 2010–14 | 41.0 | 35.7 | 35.4 | 38.6 |
| 2015–19 | 38.6 | 36.0 | 36.1 | 39.6 |
| 2020–24 | 40.0 | 36.9 | 36.7 | 40.1 |
| Change | +0.3 | +1.8 | +2.0 | +2.3 |
At 40.0, the median age in ZIP 78121 is close to the national median of 40.1, so its age mix looks much like the country's. The population here is older than in the San Antonio area overall, where the median age is 36.9. The median age has crept up from 39.7 in 2006–10, a smaller shift than nationally.
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 78121
| Period | ZIP 78121 | San Antonio area | Texas | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.2% | 13.5% | 13.7% | 12.3% |
| 2010–14 | 8.9% | 14.0% | 13.7% | 12.3% |
| 2015–19 | 6.9% | 13.3% | 13.1% | 11.6% |
| 2020–24 | 6.7% | 13.3% | 12.9% | 11.6% |
| Change | −1.5 pts | −0.3 pts | −0.8 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 78121: 6.7% of households, against 11.6% nationally. The single-parent share has fallen 1.5 points since 2006–10, as it has nationally. ZIP 78121 has a lower share of single-parent households than the great majority of Texas 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 78121
Renters in ZIP 78121
| Period | ZIP 78121 | San Antonio area | Texas | U.S. |
|---|---|---|---|---|
| 2006–10 | 11.2% | 34.4% | 35.2% | 33.3% |
| 2010–14 | 9.1% | 37.3% | 37.3% | 35.6% |
| 2015–19 | 8.1% | 37.4% | 38.0% | 36.0% |
| 2020–24 | 10.3% | 36.7% | 37.4% | 34.8% |
| Change | −0.8 pts | +2.2 pts | +2.3 pts | +1.5 pts |
Only 10.3% of households in ZIP 78121 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 40.3% have no mortgage at all, about the same as nationally. The renter share is down 0.8 points from 2006–10, even as the national share rose. Of the 1,017 Texas ZIP codes with 5,000+ people, only 28 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 ZIP 78121
| Period | ZIP 78121 | San Antonio area | Texas | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.1% | 10.7% | 11.8% | 11.4% |
| 2010–14 | 5.1% | 9.4% | 10.9% | 11.4% |
| 2015–19 | 8.3% | 9.3% | 10.9% | 11.1% |
| 2020–24 | 5.0% | 8.7% | 9.4% | 9.6% |
| Change | −2.1 pts | −1.9 pts | −2.4 pts | −1.8 pts |
Empty homes are scarce in ZIP 78121: just 5.0% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. Vacancy is down 2.1 points from 2006–10, in line with the national trend. ZIP 78121 has a lower vacancy rate than the great majority of Texas 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 78121
| Period | ZIP 78121 | San Antonio area | Texas | U.S. |
|---|---|---|---|---|
| 2006–10 | 1993 | 1984 | 1983 | 1974 |
| 2010–14 | 1995 | 1985 | 1985 | 1975 |
| 2015–19 | 1999 | 1987 | 1987 | 1977 |
| 2020–24 | 2002 | 1993 | 1992 | 1980 |
| Change | +9 | +9 | +8 | +6 |
Much of the housing in ZIP 78121 is relatively new: half of its homes were built after 2002, compared with 1980 for the U.S. as a whole. The median year built has moved up from 1993 in 2006–10, a sign of steady new building. ZIP 78121 has newer homes than at least four in five Texas ZIP codes.
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 78121
| Period | ZIP 78121 | San Antonio area | Texas | U.S. |
|---|---|---|---|---|
| 2006–10 | $885 | $906 | $921 | $965 |
| 2010–14 | $878 | $1,022 | $1,005 | $1,040 |
| 2015–19 | $976 | $1,173 | $1,178 | $1,213 |
| 2020–24 | $1,336 | $1,527 | $1,560 | $1,571 |
| Change | +$451 | +$621 | +$639 | +$606 |
Rent in ZIP 78121 runs $1,336 a month at the median, utilities included, below the U.S. median of $1,571. Rent has climbed $451 a month since 2006–10, up 51%, a slower climb than the nation's. Rent takes 26.6% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent.
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 78121
Bachelor's degrees in ZIP 78121
| Period | ZIP 78121 | San Antonio area | Texas | U.S. |
|---|---|---|---|---|
| 2006–10 | 21.0% | 26.9% | 27.0% | 28.4% |
| 2010–14 | 25.0% | 27.4% | 27.9% | 29.6% |
| 2015–19 | 29.3% | 29.0% | 30.0% | 32.1% |
| 2020–24 | 30.8% | 33.1% | 34.0% | 35.6% |
| Change | +9.8 pts | +6.2 pts | +7.1 pts | +7.2 pts |
College degrees are a little less common in ZIP 78121 than nationally: 30.8% of adults 25 and older have a bachelor's or higher, against 35.6%. The share with a degree is up 9.8 points from 2006–10, in line with the national trend. College graduates are most concentrated in the southwest and least in the east.
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 78121
| Period | ZIP 78121 | San Antonio area | Texas | U.S. |
|---|---|---|---|---|
| 2006–10 | 89.4% | 83.5% | 80.7% | 84.9% |
| 2010–14 | 88.8% | 84.4% | 82.0% | 86.1% |
| 2015–19 | 92.1% | 85.7% | 83.6% | 87.7% |
| 2020–24 | 90.1% | 88.1% | 85.8% | 89.3% |
| Change | +0.6 pts | +4.6 pts | +5.1 pts | +4.3 pts |
High school completion in ZIP 78121 is close to the national rate: 90.1% of adults have a diploma or equivalent, against 89.3%. The rate is higher than in the wider San Antonio area (88.1%). The share with a diploma has edged up 0.6 points since 2006–10, 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 ZIP 78121
| Period | ZIP 78121 | San Antonio area | Texas | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.8% | 6.8% | 7.0% | 8.1% |
| 2010–14 | 5.9% | 7.6% | 7.7% | 9.4% |
| 2015–19 | 3.2% | 5.2% | 5.1% | 5.6% |
| 2020–24 | 2.7% | 5.4% | 5.3% | 5.4% |
| Change | −3.2 pts | −1.4 pts | −1.7 pts | −2.7 pts |
The job market in ZIP 78121 has been strong: just 2.7% of the labor force was out of work and looking, well below the national rate of 5.4%. Only 98 of the 1,017 Texas ZIP codes with 5,000+ people have lower unemployment. Unemployment is down 3.2 points from 2006–10, mirroring the country.
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 78121 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 78121 | 2.93 | 40.0 | 6.7% | 10.3% | 5.0% | 2002 | $1,336 | 30.8% | 90.1% | 2.7% |
| ZIP 78161 | 3.40 | 37.1 | 33.5% | 18.8% | 9.6% | 1997 | $596 | 16.4% | 93.4% | 5.9% |
| ZIP 78101 | 2.89 | 43.8 | 8.6% | 14.2% | 5.7% | 1996 | $1,232 | 26.6% | 85.0% | 3.6% |
| ZIP 78152 | 2.85 | 36.4 | 11.8% | 16.6% | 4.9% | 2012 | $2,133 | 38.2% | 95.0% | 2.4% |
| ZIP 78160 | 2.93 | 40.3 | 16.7% | 17.1% | 10.0% | 1996 | $955 | 20.8% | 86.5% | 2.7% |
| ZIP 78263 | 2.88 | 45.0 | 17.3% | 18.5% | 9.4% | 1997 | $1,462 | 24.2% | 86.9% | 3.1% |
| ZIP 78222 | 2.88 | 37.1 | 12.7% | 28.3% | 7.7% | 1993 | $1,410 | 17.9% | 81.9% | 5.6% |
| ZIP 78244 | 3.13 | 33.2 | 14.3% | 27.4% | 5.9% | 2003 | $1,670 | 24.6% | 87.6% | 5.2% |
| ZIP 78143 | 2.83 | 29.3 | 24.8% | 13.0% | 13.7% | 1994 | $1,003 | 26.2% | 70.4% | 2.9% |
| ZIP 78112 | 2.69 | 41.9 | 11.0% | 11.8% | 4.9% | 2000 | $1,397 | 9.7% | 79.9% | 7.3% |
| ZIP 78220 | 3.13 | 32.3 | 25.3% | 48.7% | 11.9% | 1972 | $1,235 | 9.3% | 72.6% | 11.1% |
All figures 2020–24.
Zip codes with similar populations: 06119, CT · 07446, NJ · 55108, MN · 29624, SC · 29662, SC · 29693, SC · 33154, FL · 33478, FL · 38019, TN · 46615, IN
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 78121. 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.
No other site shows detail at this level for free. We are able to keep this site free by receiving a small commission from the referring links on this page. Please share or cite this page if you aren’t able to otherwise support our work.