McGilvra, Mercer Island, WA Demographics

Population 3,331 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
McGilvra, Mercer Island, WA map of median age by neighborhood
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Population and households in McGilvra

Household size in McGilvra

Household size, people per household
PeriodMcGilvraMercer IslandSeattle areaWashingtonU.S.
2006–102.102.412.522.562.68
2010–142.402.552.592.622.73
2015–192.282.562.622.622.71
2020–242.282.612.602.612.65
Change+0.18+0.20+0.09+0.05−0.03
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Households in McGilvra are small: just 2.28 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Since 2006–10, household size has climbed from 2.10, but in a place this small, much of that may be survey noise rather than real change.

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 McGilvra

Median age, years
PeriodMcGilvraMercer IslandSeattle areaWashingtonU.S.
2006–1046.846.537.538.037.7
2010–1446.846.638.138.738.6
2015–1945.746.238.539.339.6
2020–2443.246.838.839.640.1
Change−3.6+0.3+1.3+1.6+2.3
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McGilvra skews older than the country: its median age is 43.2, against 40.1 nationally. Even so, the population here is younger than in Mercer Island as a whole, where the median age is 46.8.

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 McGilvra

Single-parent households, % of households
PeriodMcGilvraMercer IslandSeattle areaWashingtonU.S.
2006–104.0%5.2%10.3%10.9%12.3%
2010–147.4%5.5%10.0%10.6%12.3%
2015–199.0%7.0%9.2%10.1%11.6%
2020–243.1%4.7%9.1%10.1%11.6%
Change−0.9 pts−0.5 pts−1.2 pts−0.8 pts−0.6 pts
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Single-parent households are relatively rare in McGilvra: 3.1% 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 McGilvra

Renters in McGilvra

Renters, % of occupied homes
PeriodMcGilvraMercer IslandSeattle areaWashingtonU.S.
2006–1028.2%23.4%37.7%35.2%33.3%
2010–1433.0%25.8%40.0%37.3%35.6%
2015–1942.6%31.2%39.9%37.0%36.0%
2020–2457.8%32.9%40.0%36.2%34.8%
Change+29.5 pts+9.6 pts+2.3 pts+1.0 pts+1.5 pts
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Renters far outnumber owners in McGilvra: 57.8% of households rent their homes, against 34.8% nationally. Among homeowners, 33.7% have no mortgage at all, 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 McGilvra

Vacant homes, % of all homes
PeriodMcGilvraMercer IslandSeattle areaWashingtonU.S.
2006–1011.8%7.5%7.9%9.2%11.4%
2010–1415.0%8.3%7.8%9.2%11.4%
2015–198.9%7.3%6.8%8.2%11.1%
2020–2410.1%5.5%6.6%7.6%9.6%
Change−1.7 pts−2.0 pts−1.3 pts−1.6 pts−1.8 pts
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Vacancy in McGilvra is close to the national rate: 10.1% of homes are empty, against 9.6%. The rate is higher than in Mercer Island overall (5.5%).

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 McGilvra

Age of homes, median year built
PeriodMcGilvraMercer IslandSeattle areaWashingtonU.S.
2006–1019701972197719771974
2010–1419721973197819791975
2015–1919751973198019801977
2020–2419761972198319841980
Change+7+1+7+6+6
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Homes in McGilvra are about the same age as the nation's housing: the median home was built in 1976, versus 1980 nationally. Homes here are newer than in Mercer Island as a whole, where the median home dates to 1972.

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 McGilvra

Rent, per month
PeriodMcGilvraMercer IslandSeattle areaWashingtonU.S.
2006–10$1,408$1,530$1,162$1,018$965
2010–14$1,564$1,680$1,284$1,127$1,040
2015–19$2,231$2,633$1,644$1,390$1,213
2020–24$2,535$3,033$2,193$1,875$1,571
Change+$1,127+$1,503+$1,031+$858+$606
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A typical rental in McGilvra costs $2,535 a month with utilities, well above the national median of $1,571. Even so, rents here are lower than in Mercer Island as a whole ($3,033). Rent takes 38.5% 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 McGilvra

Bachelor's degrees in McGilvra

Bachelor's degrees, % of adults 25+
PeriodMcGilvraMercer IslandSeattle areaWashingtonU.S.
2006–1067.3%75.4%36.7%31.0%28.4%
2010–1472.3%75.4%38.0%32.1%29.6%
2015–1976.9%78.3%42.3%35.5%32.1%
2020–2478.4%81.9%46.3%38.8%35.6%
Change+11.1 pts+6.5 pts+9.6 pts+7.8 pts+7.2 pts
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McGilvra is highly educated: about eight in ten adults 25 and older (78.4%) hold at least a bachelor's degree, far above the national share of 35.6%. Locally, though, the share is lower than in Mercer Island as a whole (81.9%).

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 McGilvra

High school graduates, % of adults 25+
PeriodMcGilvraMercer IslandSeattle areaWashingtonU.S.
2006–1096.3%98.2%91.3%89.5%84.9%
2010–1496.4%98.0%91.6%90.0%86.1%
2015–1997.2%97.9%92.5%91.0%87.7%
2020–2499.4%98.4%93.1%91.9%89.3%
Change+3.1 pts+0.1 pts+1.8 pts+2.4 pts+4.3 pts
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Finishing high school is nearly universal in McGilvra: 99.4% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The picture is much the same across Mercer Island.

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 McGilvra

Unemployment, % of the labor force
PeriodMcGilvraMercer IslandSeattle areaWashingtonU.S.
2006–105.6%3.9%6.9%7.6%8.1%
2010–144.6%4.6%8.3%8.9%9.4%
2015–191.9%3.8%4.5%5.1%5.6%
2020–244.0%2.9%5.0%5.1%5.4%
Change−1.6 pts−1.0 pts−2.0 pts−2.5 pts−2.7 pts
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Unemployment in McGilvra runs below the national rate: 4.0% of the labor force was out of work and looking, against 5.4% nationally. Even so, the rate is higher than in Mercer Island overall (2.9%). 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).

McGilvra compared with nearby neighborhoods

NeighborhoodHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
McGilvra2.2843.23.1%57.8%10.1%1976$2,53578.4%99.4%4.0%
Mercer Heights2.8649.53.6%12.1%5.8%1970$3,10282.5%97.6%1.6%
Downtown Seattle1.7337.33.2%79.7%10.4%2002$2,76178.7%97.5%4.1%
Meydenbauer2.5341.45.6%45.0%8.2%1983$3,04278.1%99.1%4.6%
Mt. Baker2.3843.27.8%40.2%5.8%1967$1,73261.8%89.8%2.6%
Leschi2.2642.211.1%40.0%6.2%1963$2,14172.3%95.3%6.6%
Atlantic2.0737.710.0%54.4%5.4%1995$1,89159.2%90.0%5.8%
Seward Park2.6646.04.9%18.9%2.4%1951$2,41571.7%98.5%2.5%
Madrona2.4241.810.2%29.4%3.3%1942$2,42173.5%96.9%5.4%
Columbia City2.4637.19.3%53.1%7.5%1982$2,01464.3%90.0%3.5%
Central District1.9933.36.5%66.6%6.7%1976$2,07568.8%97.2%5.5%

All figures 2020–24.

Neighborhoods with similar populations: East Boulder, Boulder, CO · Ghost Town, Laredo, TX · Garfield, Pittsburgh, PA · Franklin Falls, Franklin, NH · Oakwood, Knoxville, TN · oakwood, Bedford, OH · Fire Mountain, Oceanside, CA · Fairwood and Robandee, Kansas City, MO · West Lincoln, Lincoln, NE · West Mt. Scott, Happy Valley, 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 McGilvra. 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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