Population 5,244 · Census ACS 2020–24
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Population and households in ZIP 21104
Household size in ZIP 21104
| Period | ZIP 21104 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.25 | 2.61 | 2.68 | 2.68 |
| 2010–14 | 2.96 | 2.65 | 2.73 | 2.73 |
| 2015–19 | 2.91 | 2.65 | 2.74 | 2.71 |
| 2020–24 | 2.83 | 2.59 | 2.68 | 2.65 |
| Change | −0.42 | −0.02 | +0.01 | −0.03 |
The typical household in ZIP 21104 holds 2.83 people, more than the U.S. average of 2.65. Since 2006–10, household size has dropped from 3.25, a much bigger shift than nationally. Households are largest in the west and smallest in the north.
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 21104
| Period | ZIP 21104 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 38.3 | 38.7 | 38.5 | 37.7 |
| 2010–14 | 42.4 | 39.5 | 39.3 | 38.6 |
| 2015–19 | 45.6 | 40.2 | 40.2 | 39.6 |
| 2020–24 | 45.0 | 40.3 | 40.6 | 40.1 |
| Change | +6.7 | +1.6 | +2.1 | +2.3 |
ZIP 21104 skews older: half of its residents are older than 45.0, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. The median age has climbed from 38.3 in 2006–10, mirroring the country.
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 21104
| Period | ZIP 21104 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.5% | 12.6% | 12.5% | 12.3% |
| 2010–14 | 5.4% | 12.3% | 12.6% | 12.3% |
| 2015–19 | 3.4% | 11.6% | 11.7% | 11.6% |
| 2020–24 | 6.8% | 11.5% | 11.7% | 11.6% |
| Change | +1.3 pts | −1.1 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 21104: 6.8% of households, against 11.6% nationally. The single-parent share is up 1.3 points from 2006–10, even as the national share fell.
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 21104
Renters in ZIP 21104
| Period | ZIP 21104 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.5% | 32.0% | 31.0% | 33.3% |
| 2010–14 | 6.9% | 33.5% | 32.9% | 35.6% |
| 2015–19 | 6.6% | 33.5% | 33.1% | 36.0% |
| 2020–24 | 4.9% | 33.1% | 32.4% | 34.8% |
| Change | −1.6 pts | +1.1 pts | +1.4 pts | +1.5 pts |
ZIP 21104 is overwhelmingly a place of homeowners: only 4.9% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Nearly a quarter of owners (24.0%) have paid off their mortgages, well below the national share of 39.8%. Since 2006–10, the renter share has fallen 1.6 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 21104
| Period | ZIP 21104 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.6% | 9.3% | 9.0% | 11.4% |
| 2010–14 | 2.2% | 9.3% | 8.9% | 11.4% |
| 2015–19 | 3.3% | 9.4% | 8.9% | 11.1% |
| 2020–24 | 5.0% | 7.2% | 7.1% | 9.6% |
| Change | +2.4 pts | −2.1 pts | −1.9 pts | −1.8 pts |
Only 5.0% of homes in ZIP 21104 are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. Since 2006–10, vacancy has risen 2.4 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 ZIP 21104
| Period | ZIP 21104 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1990 | 1971 | 1974 | 1974 |
| 2010–14 | 1984 | 1972 | 1975 | 1975 |
| 2015–19 | 1994 | 1973 | 1976 | 1977 |
| 2020–24 | 1998 | 1975 | 1978 | 1980 |
| Change | +8 | +4 | +4 | +6 |
Much of the housing in ZIP 21104 is relatively new: half of its homes were built after 1998, compared with 1980 for the U.S. as a whole. The median year built has moved up from 1990 in 2006–10, a sign of steady new building. The newest homes are mostly in the east, the oldest in the north. Of the 240 Maryland ZIP codes with 5,000+ people, only 22 have newer 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 ZIP 21104
| Period | ZIP 21104 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $893 | $1,179 | $1,249 | $965 |
| 2010–14 | $1,236 | $1,293 | $1,363 | $1,040 |
| 2015–19 | $1,855 | $1,477 | $1,576 | $1,213 |
| 2020–24 | $1,769 | $1,778 | $1,869 | $1,571 |
| Change | +$875 | +$599 | +$620 | +$606 |
The median renter in ZIP 21104 pays $1,769 a month for rent and utilities, above the national median of $1,571. Rents are up $875 a month from 2006–10, a 98% jump, faster than rents rose nationally. Rent takes 42.4% of the typical renter's income, well over the 30% mark often used to define affordable rent, so many renters here are stretched. Rents run highest in the west and lowest in the north.
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 21104
Bachelor's degrees in ZIP 21104
| Period | ZIP 21104 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 50.2% | 35.6% | 36.3% | 28.4% |
| 2010–14 | 50.9% | 37.3% | 37.7% | 29.6% |
| 2015–19 | 55.5% | 40.8% | 40.5% | 32.1% |
| 2020–24 | 68.0% | 44.1% | 43.4% | 35.6% |
| Change | +17.8 pts | +8.5 pts | +7.1 pts | +7.2 pts |
College graduates are unusually common in ZIP 21104: 68.0% 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. The share with a degree has risen 17.8 points since 2006–10, mirroring the country. Of the 240 Maryland ZIP codes with 5,000+ people, only 16 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 ZIP 21104
| Period | ZIP 21104 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 98.0% | 87.8% | 88.0% | 84.9% |
| 2010–14 | 95.4% | 89.5% | 89.1% | 86.1% |
| 2015–19 | 97.6% | 91.1% | 90.2% | 87.7% |
| 2020–24 | 98.3% | 92.1% | 90.9% | 89.3% |
| Change | +0.3 pts | +4.3 pts | +2.9 pts | +4.3 pts |
Finishing high school is nearly universal in ZIP 21104: 98.3% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. Only five of the 240 Maryland ZIP codes 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 ZIP 21104
| Period | ZIP 21104 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1.6% | 6.6% | 6.5% | 8.1% |
| 2010–14 | 2.0% | 8.3% | 8.1% | 9.4% |
| 2015–19 | 3.7% | 5.2% | 5.1% | 5.6% |
| 2020–24 | 4.8% | 4.8% | 5.0% | 5.4% |
| Change | +3.1 pts | −1.8 pts | −1.5 pts | −2.7 pts |
At 4.8%, unemployment in ZIP 21104 is close to the national rate of 5.4%. Unemployment is up 3.1 points from 2006–10, even as the national rate fell. 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 21104 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 21104 | 2.83 | 45.0 | 6.8% | 4.9% | 5.0% | 1998 | $1,769 | 68.0% | 98.3% | 4.8% |
| ZIP 21163 | 2.57 | 45.8 | 4.4% | 16.8% | 5.0% | 1999 | $1,484 | 63.1% | 98.1% | 1.7% |
| ZIP 21784 | 2.88 | 40.3 | 6.9% | 12.6% | 4.9% | 1986 | $1,836 | 53.9% | 96.3% | 3.5% |
| ZIP 21794 | 3.03 | 45.3 | 4.4% | 12.5% | 3.0% | 1995 | $2,606 | 66.3% | 97.2% | 1.0% |
| ZIP 21723 | 2.98 | 44.1 | 12.1% | 2.9% | 0.6% | 1996 | $2,089 | 64.1% | 97.0% | 7.7% |
| ZIP 21042 | 2.93 | 45.6 | 6.4% | 14.9% | 2.8% | 1987 | $2,443 | 73.1% | 97.2% | 2.0% |
| ZIP 21133 | 2.59 | 45.9 | 10.3% | 30.3% | 3.3% | 1978 | $1,609 | 35.1% | 91.5% | 6.5% |
| ZIP 21738 | 3.35 | 41.3 | 7.9% | 2.2% | 2.6% | 1997 | $2,116 | 74.6% | 97.0% | 1.4% |
| ZIP 21797 | 3.08 | 43.5 | 9.7% | 8.5% | 2.5% | 1985 | $1,712 | 54.7% | 95.0% | 4.4% |
| ZIP 21737 | 3.27 | 43.7 | 4.2% | 3.4% | 3.7% | 1994 | $2,737 | 71.0% | 97.1% | 3.3% |
| ZIP 21244 | 2.65 | 37.6 | 20.9% | 51.5% | 5.3% | 1977 | $1,630 | 35.2% | 91.5% | 6.6% |
All figures 2020–24.
Zip codes with similar populations: 01719, MA · 98439, WA · 02568, MA · 98359, WA · 02835, RI · 03036, NH · 98315, WA · 04416, ME · 05465, VT · 97630, OR
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 21104. 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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