Population 30,740 · Census ACS 2020–24
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Population and households in ZIP 20603
Household size in ZIP 20603
| Period | ZIP 20603 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.98 | 2.73 | 2.68 | 2.68 |
| 2010–14 | 2.95 | 2.82 | 2.73 | 2.73 |
| 2015–19 | 2.88 | 2.86 | 2.74 | 2.71 |
| 2020–24 | 2.87 | 2.77 | 2.68 | 2.65 |
| Change | −0.11 | +0.04 | +0.01 | −0.03 |
Households in ZIP 20603 average 2.87 people, above the national 2.65, so families with children are more common here. Since 2006–10, household size has dropped from 2.98, a much bigger shift than nationally. Households are largest in the northwest and smallest in the southeast.
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 20603
| Period | ZIP 20603 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 35.1 | 37.0 | 38.5 | 37.7 |
| 2010–14 | 35.1 | 37.6 | 39.3 | 38.6 |
| 2015–19 | 36.8 | 38.5 | 40.2 | 39.6 |
| 2020–24 | 38.0 | 39.2 | 40.6 | 40.1 |
| Change | +2.9 | +2.2 | +2.1 | +2.3 |
The median resident of ZIP 20603 is 38.0 years old, a few years younger than the national median of 40.1. The picture is much the same across the Washington area. Since 2006–10, the median age has climbed from 35.1, as it has 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 20603
| Period | ZIP 20603 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 13.2% | 11.3% | 12.5% | 12.3% |
| 2010–14 | 17.0% | 11.3% | 12.6% | 12.3% |
| 2015–19 | 13.7% | 10.4% | 11.7% | 11.6% |
| 2020–24 | 11.8% | 10.4% | 11.7% | 11.6% |
| Change | −1.5 pts | −0.9 pts | −0.9 pts | −0.6 pts |
Single-parent households are about as common in ZIP 20603 as they are nationally: 11.8%, against 11.6%. Single parents are more common here than in the Washington area overall (10.4%). The single-parent share has edged down 1.5 points since 2006–10, as it has nationally.
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 20603
Renters in ZIP 20603
| Period | ZIP 20603 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 18.3% | 34.0% | 31.0% | 33.3% |
| 2010–14 | 24.7% | 36.6% | 32.9% | 35.6% |
| 2015–19 | 23.8% | 36.8% | 33.1% | 36.0% |
| 2020–24 | 15.1% | 36.3% | 32.4% | 34.8% |
| Change | −3.2 pts | +2.3 pts | +1.4 pts | +1.5 pts |
Only 15.1% of households in ZIP 20603 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 14.3% have no mortgage at all, well below the national share of 39.8%. Renting is most common in the southeast and least common in the northwest. Since 2006–10, the renter share has fallen 3.2 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 20603
| Period | ZIP 20603 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.0% | 8.7% | 9.0% | 11.4% |
| 2010–14 | 4.8% | 7.3% | 8.9% | 11.4% |
| 2015–19 | 4.1% | 6.6% | 8.9% | 11.1% |
| 2020–24 | 5.0% | 5.9% | 7.1% | 9.6% |
| Change | −2.0 pts | −2.8 pts | −1.9 pts | −1.8 pts |
Only 5.0% of homes in ZIP 20603 are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. The Washington area as a whole looks much the same. Since 2006–10, vacancy has fallen 2.0 points, in line with the national trend.
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 20603
| Period | ZIP 20603 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 1994 | 1977 | 1974 | 1974 |
| 2010–14 | 1995 | 1978 | 1975 | 1975 |
| 2015–19 | 1996 | 1979 | 1976 | 1977 |
| 2020–24 | 1998 | 1982 | 1978 | 1980 |
| Change | +4 | +6 | +4 | +6 |
Much of the housing in ZIP 20603 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 1994 in 2006–10, a sign of steady new building. The newest homes are mostly in the center, the oldest in the east. Of the 240 Maryland ZIP codes with 5,000+ people, only 18 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 20603
| Period | ZIP 20603 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,624 | $1,470 | $1,249 | $965 |
| 2010–14 | $1,852 | $1,583 | $1,363 | $1,040 |
| 2015–19 | $2,045 | $1,907 | $1,576 | $1,213 |
| 2020–24 | $2,076 | $2,236 | $1,869 | $1,571 |
| Change | +$451 | +$766 | +$620 | +$606 |
A typical rental in ZIP 20603 costs $2,076 a month with utilities, well above the national median of $1,571. Even so, rents here are lower than in the Washington area overall ($2,236). Rent has climbed $451 a month since 2006–10, up 28%, a slower climb than the nation's. The typical renter here spends 25.4% of household income on rent, comfortably 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 ZIP 20603
Bachelor's degrees in ZIP 20603
| Period | ZIP 20603 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 34.5% | 46.6% | 36.3% | 28.4% |
| 2010–14 | 36.8% | 48.2% | 37.7% | 29.6% |
| 2015–19 | 38.5% | 51.0% | 40.5% | 32.1% |
| 2020–24 | 39.7% | 53.9% | 43.4% | 35.6% |
| Change | +5.3 pts | +7.3 pts | +7.1 pts | +7.2 pts |
About four in ten adults 25 and older in ZIP 20603 (39.7%) have a bachelor's degree or higher, a bit above the national share of 35.6%. Even so, the share is lower than in the Washington area overall (53.9%). The share with a degree has risen 5.3 points since 2006–10, in line with the national trend.
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 20603
| Period | ZIP 20603 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 94.1% | 89.4% | 88.0% | 84.9% |
| 2010–14 | 94.6% | 90.2% | 89.1% | 86.1% |
| 2015–19 | 95.7% | 90.8% | 90.2% | 87.7% |
| 2020–24 | 96.1% | 91.2% | 90.9% | 89.3% |
| Change | +2.0 pts | +1.7 pts | +2.9 pts | +4.3 pts |
High school completion is high in ZIP 20603: 96.1% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 2.0 points from 2006–10, as it has nationally. ZIP 20603 has a higher share of high school graduates than the great majority of Maryland ZIP codes.
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 20603
| Period | ZIP 20603 | Washington area | Maryland | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.3% | 5.9% | 6.5% | 8.1% |
| 2010–14 | 7.0% | 6.9% | 8.1% | 9.4% |
| 2015–19 | 3.4% | 4.7% | 5.1% | 5.6% |
| 2020–24 | 5.0% | 4.8% | 5.0% | 5.4% |
| Change | +0.7 pts | −1.1 pts | −1.5 pts | −2.7 pts |
At 5.0%, unemployment in ZIP 20603 is close to the national rate of 5.4%. Since 2006–10, unemployment has edged up 0.7 points, even as the national rate fell. 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 20603 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 20603 | 2.87 | 38.0 | 11.8% | 15.1% | 5.0% | 1998 | $2,076 | 39.7% | 96.1% | 5.0% |
| ZIP 20695 | 3.07 | 36.6 | 9.3% | 19.4% | 2.6% | 2005 | $2,294 | 39.9% | 94.1% | 5.0% |
| ZIP 20602 | 2.86 | 34.8 | 16.2% | 29.8% | 4.1% | 1988 | $1,896 | 31.7% | 94.7% | 6.2% |
| ZIP 20607 | 3.19 | 42.6 | 10.9% | 3.5% | 2.4% | 1996 | $1,612 | 46.8% | 93.8% | 8.5% |
| ZIP 20601 | 2.76 | 39.9 | 12.9% | 20.7% | 5.5% | 1990 | $2,194 | 32.2% | 95.4% | 5.4% |
| ZIP 20675 | 2.85 | 50.6 | 4.8% | 5.4% | 5.0% | 1990 | $2,136 | 42.2% | 90.0% | 4.6% |
| ZIP 20616 | 3.05 | 38.0 | 12.6% | 4.4% | 0.4% | 1998 | $2,528 | 31.8% | 95.6% | 8.4% |
| ZIP 20613 | 2.87 | 44.6 | 9.6% | 5.2% | 4.0% | 2005 | $2,535 | 36.8% | 95.7% | 4.8% |
| ZIP 20646 | 2.69 | 43.5 | 9.8% | 12.3% | 7.0% | 1990 | $1,656 | 34.0% | 94.9% | 3.6% |
| ZIP 20617 | 2.95 | 38.2 | 5.8% | 12.6% | 4.1% | 1988 | $1,891 | 42.1% | 97.0% | 2.4% |
| ZIP 22308 | 2.88 | 43.3 | 3.9% | 6.4% | 2.6% | 1964 | $2,992 | 80.2% | 98.0% | 3.7% |
All figures 2020–24.
Zip codes with similar populations: 78418, TX · 76092, TX · 11050, NY · 46544, IN · 02062, MA · 41051, KY · 45005, OH · 94941, CA · 94043, CA · 92881, CA
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 20603. 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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