Population 7,191 · Census ACS 2020–24
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Population and households in ZIP 21131
Household size in ZIP 21131
| Period | ZIP 21131 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.92 | 2.61 | 2.68 | 2.68 |
| 2010–14 | 2.95 | 2.65 | 2.73 | 2.73 |
| 2015–19 | 2.88 | 2.65 | 2.74 | 2.71 |
| 2020–24 | 2.79 | 2.59 | 2.68 | 2.65 |
| Change | −0.13 | −0.02 | +0.01 | −0.03 |
The typical household in ZIP 21131 holds 2.79 people, slightly more than the U.S. average of 2.65. Household size has dropped from 2.92 in 2006–10, a much bigger shift than nationally. Households are largest in the east and smallest in the northwest.
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 21131
| Period | ZIP 21131 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 44.7 | 38.7 | 38.5 | 37.7 |
| 2010–14 | 46.8 | 39.5 | 39.3 | 38.6 |
| 2015–19 | 46.0 | 40.2 | 40.2 | 39.6 |
| 2020–24 | 50.2 | 40.3 | 40.6 | 40.1 |
| Change | +5.4 | +1.6 | +2.1 | +2.3 |
ZIP 21131 skews older: half of its residents are older than 50.2, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. Since 2006–10, the median age has climbed from 44.7, as it has nationally. Of the 240 Maryland ZIP codes with 5,000+ people, only two are older.
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 21131
| Period | ZIP 21131 | 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 | 4.5% | 11.5% | 11.7% | 11.6% |
| Change | −1.1 pts | −1.1 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 21131: 4.5% of households, against 11.6% nationally. The single-parent share is down 1.1 points from 2006–10, in line with the national trend. Only 13 of the 240 Maryland ZIP codes with 5,000+ people have a lower share of single-parent households.
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 21131
Renters in ZIP 21131
| Period | ZIP 21131 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.3% | 32.0% | 31.0% | 33.3% |
| 2010–14 | 4.0% | 33.5% | 32.9% | 35.6% |
| 2015–19 | 5.3% | 33.5% | 33.1% | 36.0% |
| 2020–24 | 3.4% | 33.1% | 32.4% | 34.8% |
| Change | +0.1 pts | +1.1 pts | +1.4 pts | +1.5 pts |
Only 3.4% of households in ZIP 21131 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 36.4% have no mortgage at all, below the national share of 39.8%. Of the 240 Maryland ZIP codes with 5,000+ people, only two 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 21131
| Period | ZIP 21131 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.9% | 9.3% | 9.0% | 11.4% |
| 2010–14 | 6.1% | 9.3% | 8.9% | 11.4% |
| 2015–19 | 5.6% | 9.4% | 8.9% | 11.1% |
| 2020–24 | 3.1% | 7.2% | 7.1% | 9.6% |
| Change | −3.8 pts | −2.1 pts | −1.9 pts | −1.8 pts |
Empty homes are scarce in ZIP 21131: just 3.1% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. Since 2006–10, vacancy has fallen 3.8 points, in line with the national trend. ZIP 21131 has a lower vacancy rate than at least four in five Maryland 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 21131
| Period | ZIP 21131 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1977 | 1971 | 1974 | 1974 |
| 2010–14 | 1977 | 1972 | 1975 | 1975 |
| 2015–19 | 1979 | 1973 | 1976 | 1977 |
| 2020–24 | 1977 | 1975 | 1978 | 1980 |
| Change | −0 | +4 | +4 | +6 |
The typical home in ZIP 21131 was built around 1977, about the same vintage as the country's housing overall (1980). Newer construction is concentrated in the northwest, while the southeast 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 21131
| Period | ZIP 21131 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,833 | $1,179 | $1,249 | $965 |
| 2010–14 | $1,068 | $1,293 | $1,363 | $1,040 |
| 2015–19 | $1,852 | $1,477 | $1,576 | $1,213 |
| 2020–24 | $1,668 | $1,778 | $1,869 | $1,571 |
| Change | −$165 | +$599 | +$620 | +$606 |
A typical rental in ZIP 21131 costs $1,668 a month with utilities, above the national median of $1,571. Locally, though, rents here are lower than in the Baltimore area as a whole ($1,778). Rent has fallen $165 a month since 2006–10, down 9%, even as the national median rose. The typical renter here spends 32.9% of household income on rent, just over 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 21131
Bachelor's degrees in ZIP 21131
| Period | ZIP 21131 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 59.0% | 35.6% | 36.3% | 28.4% |
| 2010–14 | 63.9% | 37.3% | 37.7% | 29.6% |
| 2015–19 | 66.4% | 40.8% | 40.5% | 32.1% |
| 2020–24 | 73.7% | 44.1% | 43.4% | 35.6% |
| Change | +14.7 pts | +8.5 pts | +7.1 pts | +7.2 pts |
College graduates are unusually common in ZIP 21131: 73.7% 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 is up 14.7 points from 2006–10, mirroring the country. Of the 240 Maryland ZIP codes with 5,000+ people, only nine 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 21131
| Period | ZIP 21131 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 95.5% | 87.8% | 88.0% | 84.9% |
| 2010–14 | 96.9% | 89.5% | 89.1% | 86.1% |
| 2015–19 | 98.3% | 91.1% | 90.2% | 87.7% |
| 2020–24 | 98.7% | 92.1% | 90.9% | 89.3% |
| Change | +3.2 pts | +4.3 pts | +2.9 pts | +4.3 pts |
Finishing high school is nearly universal in ZIP 21131: 98.7% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma has risen 3.2 points since 2006–10, in line with the national trend. Only one other Maryland ZIP code with 5,000+ people has 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 21131
| Period | ZIP 21131 | Baltimore area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.1% | 6.6% | 6.5% | 8.1% |
| 2010–14 | 2.3% | 8.3% | 8.1% | 9.4% |
| 2015–19 | 2.2% | 5.2% | 5.1% | 5.6% |
| 2020–24 | 2.8% | 4.8% | 5.0% | 5.4% |
| Change | −0.3 pts | −1.8 pts | −1.5 pts | −2.7 pts |
The job market in ZIP 21131 has been strong: just 2.8% of the labor force was out of work and looking, well below the national rate of 5.4%. ZIP 21131 has lower unemployment than the great majority of Maryland ZIP codes. 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).
ZIP 21131 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 21131 | 2.79 | 50.2 | 4.5% | 3.4% | 3.1% | 1977 | $1,668 | 73.7% | 98.7% | 2.8% |
| ZIP 21013 | 2.93 | 46.5 | 8.0% | 4.4% | 3.1% | 1975 | $1,245 | 55.1% | 95.5% | 1.3% |
| ZIP 21030 | 2.39 | 39.9 | 8.4% | 56.1% | 6.2% | 1980 | $1,739 | 53.9% | 92.6% | 5.1% |
| ZIP 21057 | 2.78 | 44.4 | 3.4% | 15.8% | 3.3% | 1971 | $1,664 | 55.6% | 95.0% | 1.6% |
| ZIP 21111 | 2.62 | 49.4 | 8.4% | 3.7% | 3.0% | 1979 | $1,420 | 63.2% | 98.6% | 7.4% |
| ZIP 21031 | 1.48 | 52.5 | 3.7% | 62.9% | 11.0% | 2009 | $2,295 | 68.4% | 97.7% | 2.7% |
| ZIP 21152 | 2.45 | 46.9 | 5.8% | 29.9% | 1.8% | 1983 | $1,951 | 56.8% | 98.9% | 6.2% |
| ZIP 21082 | 2.90 | 40.8 | 10.2% | 7.5% | 4.4% | 1969 | $1,642 | 45.8% | 95.8% | 0.5% |
| ZIP 21093 | 2.51 | 46.7 | 6.5% | 21.3% | 5.6% | 1974 | $1,984 | 68.5% | 95.5% | 4.4% |
| ZIP 21051 | 2.54 | 44.8 | 9.0% | 9.0% | 3.4% | 1967 | $1,627 | 49.6% | 99.1% | 0.0% |
| ZIP 21286 | 2.37 | 38.3 | 5.4% | 37.2% | 7.5% | 1967 | $1,691 | 59.1% | 93.9% | 4.5% |
All figures 2020–24.
Zip codes with similar populations: 75173, TX · 29655, SC · 32440, FL · 32456, FL · 34228, FL · 37146, TN · 41041, KY · 47454, IN · 72081, AR · 72390, AR
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 21131. 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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