Population 11,652 · Census ACS 2020–24
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Population and households in Interbay
Household size in Interbay
| Period | Interbay | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 1.85 | 2.52 | 2.56 | 2.68 |
| 2010–14 | 2.04 | 2.59 | 2.62 | 2.73 |
| 2015–19 | 2.13 | 2.62 | 2.62 | 2.71 |
| 2020–24 | 2.07 | 2.60 | 2.61 | 2.65 |
| Change | +0.22 | +0.09 | +0.05 | −0.03 |
Interbay is a place of small households, averaging 2.07 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 1.85 in 2006–10, even as the national average fell. The biggest households, usually families with children, are concentrated in the east.
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 Interbay
| Period | Interbay | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 38.1 | 37.5 | 38.0 | 37.7 |
| 2010–14 | 35.6 | 38.1 | 38.7 | 38.6 |
| 2015–19 | 35.4 | 38.5 | 39.3 | 39.6 |
| 2020–24 | 35.5 | 38.8 | 39.6 | 40.1 |
| Change | −2.6 | +1.3 | +1.6 | +2.3 |
Interbay is young: half of its residents are under 35.5, compared with a national median of 40.1. The population tilts toward young adults, many of them living alone or as couples. The median age has dropped from 38.1 in 2006–10, even as the national median rose.
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 Interbay
| Period | Interbay | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.4% | 10.3% | 10.9% | 12.3% |
| 2010–14 | 5.2% | 10.0% | 10.6% | 12.3% |
| 2015–19 | 6.4% | 9.2% | 10.1% | 11.6% |
| 2020–24 | 4.5% | 9.1% | 10.1% | 11.6% |
| Change | +0.1 pts | −1.2 pts | −0.8 pts | −0.6 pts |
Single-parent households are relatively rare in Interbay: 4.5% of households, against 11.6% nationally. The single-parent share has barely moved since 2006–10, while 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 Interbay
Renters in Interbay
| Period | Interbay | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 50.8% | 37.7% | 35.2% | 33.3% |
| 2010–14 | 53.1% | 40.0% | 37.3% | 35.6% |
| 2015–19 | 56.2% | 39.9% | 37.0% | 36.0% |
| 2020–24 | 55.9% | 40.0% | 36.2% | 34.8% |
| Change | +5.1 pts | +2.3 pts | +1.0 pts | +1.5 pts |
Most households in Interbay rent: 55.9% of occupied homes are rented, far above the national share of 34.8%. Expect more apartments, and more turnover, than in owner-heavy areas. About a quarter of owners (25.5%) have paid off their mortgages, well below the national share of 39.8%. The renter share has risen 5.1 points since 2006–10, a much bigger shift than nationally.
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 Interbay
| Period | Interbay | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.8% | 7.9% | 9.2% | 11.4% |
| 2010–14 | 6.6% | 7.8% | 9.2% | 11.4% |
| 2015–19 | 9.0% | 6.8% | 8.2% | 11.1% |
| 2020–24 | 7.7% | 6.6% | 7.6% | 9.6% |
| Change | +1.0 pts | −1.3 pts | −1.6 pts | −1.8 pts |
Fewer homes sit empty in Interbay than nationally: 7.7%, against 9.6% for the U.S. That is in line with the rest of the Seattle area. Since 2006–10, vacancy has edged up 1.0 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 Interbay
| Period | Interbay | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 1963 | 1977 | 1977 | 1974 |
| 2010–14 | 1960 | 1978 | 1979 | 1975 |
| 2015–19 | 1968 | 1980 | 1980 | 1977 |
| 2020–24 | 1971 | 1983 | 1984 | 1980 |
| Change | +9 | +7 | +6 | +6 |
The housing in Interbay is old by national standards: the median home dates to 1971, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. The median year built has moved up from 1963 in 2006–10, a sign of steady new building. The newest homes are mostly in the west, the oldest in the east.
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 Interbay
| Period | Interbay | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,109 | $1,162 | $1,018 | $965 |
| 2010–14 | $1,316 | $1,284 | $1,127 | $1,040 |
| 2015–19 | $1,789 | $1,644 | $1,390 | $1,213 |
| 2020–24 | $2,495 | $2,193 | $1,875 | $1,571 |
| Change | +$1,386 | +$1,031 | +$858 | +$606 |
Rent in Interbay runs $2,495 a month at the median, utilities included, well above the U.S. median of $1,571. Rent has climbed $1,386 a month since 2006–10, up 125%, faster than rents rose nationally. The typical renter here spends 22.3% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally. Rents run highest in the east 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 Interbay
Bachelor's degrees in Interbay
| Period | Interbay | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 62.3% | 36.7% | 31.0% | 28.4% |
| 2010–14 | 70.2% | 38.0% | 32.1% | 29.6% |
| 2015–19 | 74.8% | 42.3% | 35.5% | 32.1% |
| 2020–24 | 71.4% | 46.3% | 38.8% | 35.6% |
| Change | +9.1 pts | +9.6 pts | +7.8 pts | +7.2 pts |
Interbay is highly educated: about seven in ten adults 25 and older (71.4%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree is up 9.1 points from 2006–10, mirroring the country. College graduates are most concentrated in the east and least in the center.
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 Interbay
| Period | Interbay | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 98.9% | 91.3% | 89.5% | 84.9% |
| 2010–14 | 97.6% | 91.6% | 90.0% | 86.1% |
| 2015–19 | 98.0% | 92.5% | 91.0% | 87.7% |
| 2020–24 | 99.0% | 93.1% | 91.9% | 89.3% |
| Change | +0.1 pts | +1.8 pts | +2.4 pts | +4.3 pts |
Finishing high school is nearly universal in Interbay: 99.0% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. Interbay has a higher share of high school graduates than at least four in five Seattle neighborhoods.
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 Interbay
| Period | Interbay | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.9% | 6.9% | 7.6% | 8.1% |
| 2010–14 | 4.7% | 8.3% | 8.9% | 9.4% |
| 2015–19 | 3.3% | 4.5% | 5.1% | 5.6% |
| 2020–24 | 3.5% | 5.0% | 5.1% | 5.4% |
| Change | −1.4 pts | −2.0 pts | −2.5 pts | −2.7 pts |
Jobs have been easier to find in Interbay than nationally: unemployment was 3.5%, against 5.4%. Since 2006–10, unemployment has edged down 1.4 points, mirroring the country. 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).
Interbay compared with nearby neighborhoods
| Neighborhood | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Interbay | 2.07 | 35.5 | 4.5% | 55.9% | 7.7% | 1971 | $2,495 | 71.4% | 99.0% | 3.5% |
| Queen Anne | 2.04 | 36.5 | 3.9% | 51.4% | 9.7% | 1955 | $2,155 | 76.5% | 98.4% | 3.8% |
| Magnolia | 2.30 | 41.3 | 3.4% | 35.5% | 7.9% | 1960 | $2,765 | 78.3% | 99.5% | 3.0% |
| Fremont | 1.73 | 33.3 | 3.5% | 66.0% | 5.8% | 1978 | $2,103 | 84.1% | 98.4% | 3.2% |
| Westlake | 1.46 | 31.1 | 1.2% | 81.1% | 10.7% | 2005 | $2,463 | 88.9% | 99.2% | 5.3% |
| Uptown | 1.41 | 34.5 | 1.7% | 78.1% | 12.8% | 1989 | $2,093 | 71.2% | 97.2% | 6.0% |
| Ballard | 1.94 | 34.9 | 4.2% | 65.7% | 8.0% | 1977 | $2,167 | 78.6% | 98.2% | 4.2% |
| Wallingford | 2.30 | 35.1 | 4.5% | 52.2% | 6.6% | 1951 | $2,205 | 83.5% | 98.3% | 6.3% |
| Eastlake | 1.66 | 36.7 | 2.4% | 67.1% | 8.9% | 1984 | $1,913 | 81.5% | 99.1% | 6.3% |
| Sunset Hill | 1.98 | 37.8 | 3.4% | 51.9% | 6.6% | 1981 | $2,432 | 77.7% | 98.3% | 5.0% |
| South Lake Union | 1.40 | 29.6 | 1.3% | 93.3% | 14.6% | 2013 | $2,571 | 80.3% | 98.7% | 4.4% |
All figures 2020–24.
Neighborhoods with similar populations: Indian Hills-Stonewall Estates-Monticello, Lexington, KY · Steele Creek, Charlotte, NC · Roosevelt Island, Manhattan, NY · Reservoir Hill-Bolton Hill, Baltimore, MD · Russian Jack Park, Anchorage, AK · Old North Milwaukee, Milwaukee, WI · Oakdale, Atlanta, GA · Mount Pleasant, Providence, RI · Serrano Village, El Dorado Hills, CA · Sexton Mountain, Beaverton, 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 Interbay. 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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