Population 2,249 · Census ACS 2020–24
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Population and households in ZIP 20688
Household size in ZIP 20688
| Period | ZIP 20688 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 2.08 | 2.68 | 2.68 |
| 2010–14 | 1.81 | 2.73 | 2.73 |
| 2015–19 | 2.27 | 2.74 | 2.71 |
| 2020–24 | 2.20 | 2.68 | 2.65 |
| Change | +0.12 | +0.01 | −0.03 |
ZIP 20688 is a place of small households, averaging 2.20 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Household size has climbed from 2.08 in 2006–10, 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 ZIP 20688
| Period | ZIP 20688 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 49.3 | 38.5 | 37.7 |
| 2010–14 | 60.1 | 39.3 | 38.6 |
| 2015–19 | 54.5 | 40.2 | 39.6 |
| 2020–24 | 54.8 | 40.6 | 40.1 |
| Change | +5.5 | +2.1 | +2.3 |
With a median age of 54.8, ZIP 20688 is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees.
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 20688
| Period | ZIP 20688 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 13.9% | 12.5% | 12.3% |
| 2010–14 | 5.0% | 12.6% | 12.3% |
| 2015–19 | 5.9% | 11.7% | 11.6% |
| 2020–24 | 7.4% | 11.7% | 11.6% |
| Change | −6.6 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 20688: 7.4% of households, against 11.6% 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 20688
Renters in ZIP 20688
| Period | ZIP 20688 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 38.9% | 31.0% | 33.3% |
| 2010–14 | 42.1% | 32.9% | 35.6% |
| 2015–19 | 39.2% | 33.1% | 36.0% |
| 2020–24 | 24.5% | 32.4% | 34.8% |
| Change | −14.4 pts | +1.4 pts | +1.5 pts |
Only 24.5% of households in ZIP 20688 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Just over a third of owners (35.3%) have paid off their mortgages, below 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 ZIP 20688
| Period | ZIP 20688 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 18.9% | 9.0% | 11.4% |
| 2010–14 | 27.7% | 8.9% | 11.4% |
| 2015–19 | 19.2% | 8.9% | 11.1% |
| 2020–24 | 15.3% | 7.1% | 9.6% |
| Change | −3.6 pts | −1.9 pts | −1.8 pts |
Vacancy is high in ZIP 20688: 15.3% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
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 20688
| Period | ZIP 20688 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 1991 | 1974 | 1974 |
| 2010–14 | 1990 | 1975 | 1975 |
| 2015–19 | 1993 | 1976 | 1977 |
| 2020–24 | 1997 | 1978 | 1980 |
| Change | +6 | +4 | +6 |
ZIP 20688 has newer housing than the country as a whole: the median home was built in 1997, versus 1980 nationally.
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 20688
| Period | ZIP 20688 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | $1,424 | $1,249 | $965 |
| 2010–14 | $1,808 | $1,363 | $1,040 |
| 2015–19 | $2,270 | $1,576 | $1,213 |
| 2020–24 | $2,452 | $1,869 | $1,571 |
| Change | +$1,027 | +$620 | +$606 |
A typical rental in ZIP 20688 costs $2,452 a month with utilities, well above the national median of $1,571. Rent takes 43.9% of the typical renter's income, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
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 20688
Bachelor's degrees in ZIP 20688
| Period | ZIP 20688 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 43.2% | 36.3% | 28.4% |
| 2010–14 | 49.9% | 37.7% | 29.6% |
| 2015–19 | 43.4% | 40.5% | 32.1% |
| 2020–24 | 43.3% | 43.4% | 35.6% |
| Change | +0.0 pts | +7.1 pts | +7.2 pts |
More than four in ten adults 25 and older in ZIP 20688 (43.3%) have a bachelor's degree or higher, above the national share of 35.6%. The picture is much the same across Maryland.
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 20688
| Period | ZIP 20688 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 93.8% | 88.0% | 84.9% |
| 2010–14 | 90.4% | 89.1% | 86.1% |
| 2015–19 | 96.7% | 90.2% | 87.7% |
| 2020–24 | 96.0% | 90.9% | 89.3% |
| Change | +2.2 pts | +2.9 pts | +4.3 pts |
High school completion is high in ZIP 20688: 96.0% 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 ZIP 20688
| Period | ZIP 20688 | Maryland | U.S. |
|---|---|---|---|
| 2006–10 | 6.4% | 6.5% | 8.1% |
| 2010–14 | 5.0% | 8.1% | 9.4% |
| 2015–19 | 6.4% | 5.1% | 5.6% |
| 2020–24 | 2.0% | 5.0% | 5.4% |
| Change | −4.4 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 20688 has been low: just 2.0% of the labor force was out of work and looking, well below the national rate of 5.4%. 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 20688 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 20688 | 2.20 | 54.8 | 7.4% | 24.5% | 15.3% | 1997 | $2,452 | 43.3% | 96.0% | 2.0% |
| ZIP 20629 | 2.15 | 54.6 | 7.4% | 4.5% | 12.8% | 2000 | $2,130 | 44.3% | 95.0% | 0.0% |
| ZIP 20657 | 2.81 | 38.3 | 8.6% | 13.8% | 9.7% | 1990 | $1,849 | 33.2% | 94.4% | 3.3% |
| ZIP 20670 | 3.34 | 23.5 | 11.5% | 89.0% | 15.5% | 1995 | $2,290 | 36.4% | 100.0% | 14.3% |
| ZIP 20619 | 2.65 | 37.2 | 12.1% | 36.9% | 7.9% | 2000 | $2,037 | 47.3% | 94.0% | 1.7% |
| ZIP 20634 | 2.89 | 35.9 | 11.0% | 29.1% | 10.5% | 1998 | $1,561 | 35.0% | 88.7% | 4.0% |
| ZIP 20636 | 3.06 | 37.9 | 12.3% | 14.2% | 15.9% | 1993 | $1,845 | 38.2% | 90.7% | 2.9% |
| ZIP 20653 | 2.44 | 34.1 | 17.9% | 45.0% | 9.2% | 1993 | $1,676 | 35.8% | 92.2% | 4.6% |
| ZIP 20615 | 2.81 | 52.3 | 1.2% | 5.2% | 6.7% | 1984 | $1,677 | 16.4% | 89.6% | 0.0% |
| ZIP 20620 | 2.69 | 40.1 | 9.0% | 8.4% | 17.3% | 1992 | $1,513 | 33.8% | 98.3% | 4.0% |
| ZIP 20685 | 2.84 | 44.3 | 6.3% | 9.3% | 15.7% | 1983 | $1,855 | 29.8% | 94.7% | 1.8% |
All figures 2020–24.
Zip codes with similar populations: 10976, NY · 93516, CA · 71860, AR · 38366, TN · 42411, KY · 54622, WI · 54909, WI · 62849, IL · 62907, IL · 64734, MO
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 20688. 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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