United States › Washington › Mercer Island CITY · 2020 ACS
Mercer Island Washington · 25,748 residents · 6.38 sq mi
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The short version
Mercer Island is a city of 25,748 people in Washington. This is an unusually credentialed place: 76% of adults have a four-year degree. The typical home is worth $1,386,300, having more than doubled since 2000. That is roughly 95% ahead of the Washington median. The median household earns $150,506, about 127% above the national median. Median rent is $2,166 a month.
At a glance
Wealthier
above the US median
US median: $66,278
Older
median age 44.5
US median: 38.8
More educated
76% hold a bachelor's degree
US average: 33%
Less affordable
home values up 68%, inflation adjusted
US median home: $265,253
Section 01
Population & growth from 44.3 in 2000
US average: 38.8
Population, 1990 – 2024
20K 22K 23K 25K 26K 1990 2000 2010 2020 2024 Mercer Island Age distribution, 2020
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Section 02
Income & economy $150,506
+9%inflation adjusted, since 2000
from $91,904 in 2000
US average: $66,278
from $53,799 in 2000
US average: $35,364
Households earning $100K+
from 67.9% in 2009
US average: 43.9%
from 3.2% in 2000
US average: 12.8%
Workforce by industry, 2020
Public administration 5.8%
Arts, entertainment, food 5.2%
Transportation & warehousing 2.6%
Professional, scientific, technical 1.7%
Education & health services 0.4%
Agriculture, forestry, fishing 0.3%
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$1,386,300
+68%inflation adjusted, since 2000
from $548,300 in 2000
US average: $265,253
$2,166
+42%inflation adjusted, since 2000
from $1,014 in 2000
US average: $1,124
from 80.5% in 2000
32.4% rent
from 2.47 people in 2009
US average: 2.61
from 7.5 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity 2000
White, non-Hispanic 82.8%(18,249)
Hispanic / Latino 1.9%(410)
2020
White, non-Hispanic 63.6%(16,383)
Hispanic / Latino 4.6%(1,175)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 35 more ancestry groups with data from 69.1% in 2000
US average: 32.9%
High school or higher
from 97.7% in 2000
US average: 88.5%
from 31.6% in 2000
US average: 12.7%
Section 06
Commute & transportation from 13.4 min in 2000
US average: 26.9
from 73.2% in 2009
US average: 75.1%
from 4.1% in 2009
US average: 8.4%
Section 07
Work & employment from 4.2% in 2011
US average: 5.4%
from 60.2% in 2011
US average: 63.4%
Women 20-64 in the labor force
US average: 73.3%
from 71.4% in 2009
US average: 39.3%
Section 08
People & community from 15.6% in 2009
US average: 13.5%
from 3.0% in 2013
US average: 8.8%
Computer in household
US average: 91.9%
Marital status (2024)
Men 15+
Never married 26.5%(2,697)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 3.0% in 2013
US average: 8.8%
Direct-purchase
US average: 13.7%
VA health care
US average: 2.3%
Any private
US average: 68.1%
Any public
US average: 35.2%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2020
Gulf War (2001 or later) 4.3%(50)
Share of the 1,161 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
Places similar to Mercer Island Head to head
Compare Mercer Island to nearby cities MERCER ISLAND VS
Newcastle
Income $160,278 +6%
Home value $1,205,600 −13%
Population 13,128 −48%
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MERCER ISLAND VS
Bellevue
Income $165,576 +10%
Home value $1,340,300 −3%
Population 154,193 +507%
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MERCER ISLAND VS
Bryn Mawr-Skyway
Income $90,969 −40%
Home value $655,200 −53%
Population 17,638 −31%
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MERCER ISLAND VS
Renton
Income $100,432 −33%
Home value $672,600 −51%
Population 104,975 +313%
SEE FULL COMPARISON →
Frequently asked
How many people live in Mercer Island, Washington? Mercer Island, Washington has about 25,748 residents according to the 2020 American Community Survey.
What is the median household income in Mercer Island, Washington? The typical household in Mercer Island, Washington earns about $150,506 a year. Half of households make more than that, and half make less.
Is Mercer Island, Washington expensive? In Mercer Island, Washington, the median home is worth about $1,386,300, and the typical rent is about $2,166 a month.
How educated are people in Mercer Island, Washington? About 76.2% of adults age 25 and over in Mercer Island, Washington hold a bachelor's degree or higher.
What is the poverty rate in Mercer Island, Washington? About 5.3% of people in Mercer Island, Washington live below the federal poverty line.
Has Mercer Island, Washington grown since 1990? Yes, Mercer Island, Washington has grown since 1990. The population has added about 4,932 residents, a change of about 24 percent over that period.
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