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CITY · 2010 ACS

Mercer Island

Washington · 22,699 residents · 6.383 sq mi
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The short version

Mercer Island is significantly wealthier than the US average, with a median household income of $120,994. Population has held roughly steady since 2000. 76% of adults hold a bachelor's degree or higher, well above the national rate of 28%. Median home value has risen by half since 2000, reaching $895,800. With a median age of 46.0, the population is older than the US median of 37.2. Households here earn about 111% more than the Washington median.

At a glance
Wealthier
above the US median
US median: $52,703
Older
median age 46.0
US median: 37.2
More educated
76% hold a bachelor's degree
US average: 28%
Less affordable
home values up 29%, inflation adjusted
US median home: $225,659
Section 01

Population & growth

Total population
22,699
+3%since 2000
from 22,036 in 2000
1990 – 2025
Population density
3,556 / sq mi
+3%since 2000
from 3,452 / sq mi in 2000
US average: 261
Median age
46.0
+4%since 2000
from 44.3 in 2000
US average: 37.2
Population, 1990 – 2024
20K22K23K25K26K1990201020202024Mercer Island
202425K
1990201020202024
Section 02

Income & economy

Median household income
$120,994
+4%inflation adjusted, since 2000
from $91,904 in 2000
US average: $52,703
1990 – 2024
Per capita income
$75,644
+41%since 2000
from $53,799 in 2000
US average: $27,286
Households earning $100K+
69.3%
+1.4 ptssince 2009
from 67.9% in 2009
US average: 33.3%
Poverty rate
2.7%
−0.5 ptssince 2000
from 3.2% in 2000
US average: 13.8%
Income inequality (Gini)
0.505
US average: 0.461
Workforce by industry, 2010
Other services12.7%
US avg: 7%
Retail trade9.3%
US avg: 10.9%
Public administration8.5%
US avg: 4.9%
Information8%
US avg: 11.5%
Arts, entertainment, food4.7%
US avg: 2.4%
Finance & insurance3.5%
US avg: 5.1%
Professional, scientific, technical3%
US avg: 4.2%
Wholesale trade2.6%
US avg: 7.2%
Transportation & warehousing2.6%
US avg: 3.1%
Education & health services0.5%
US avg: 0.9%
Agriculture, forestry, fishing0.5%
US avg: 1.9%
Construction0.4%
US avg: 1.4%
Manufacturing0.1%
US avg: 0.5%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$895,800
+29%inflation adjusted, since 2000
from $548,300 in 2000
US average: $225,659
1990 – 2024
Median gross rent
$1,421
+11%inflation adjusted, since 2000
from $1,014 in 2000
US average: $853
Owner-occupied
48.6%
−31.9 ptssince 2000
from 80.5% in 2000
27.6% rent
Vacancy rate
5.0%
+1.1 ptssince 2009
from 3.9% in 2009
US average: 12.1%
Owner cost-burdened
27.4%
+1.3 ptssince 2009
from 26.1% in 2009
US average: 30.9%
Renter cost-burdened
39.9%
−2.2 ptssince 2009
from 42.2% in 2009
US average: 46.8%
Afford Score
7.4
+24%since 2000
from 6.0 in 2000
1990 – 2024
RELATED:See current rent listings in Mercer Island on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic82.8%(18,249)
Black1.1%(250)
Hispanic / Latino1.9%(410)
Asian11.8%(2,607)
Other0%
Diversity Score33.2%(7,312)
2010
White, non-Hispanic76%(17,255)
Black1.2%(282)
Hispanic / Latino2.8%(634)
Asian15.9%(3,598)
Other4%(898)
Diversity Score49.1%(11,145)
Diversity Score
49
+48%since 2000
from 33 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
76.3%
+7.2 ptssince 2000
from 69.1% in 2000
US average: 27.9%
High school or higher
98.3%
+0.6 ptssince 2000
from 97.7% in 2000
US average: 84.9%
Graduate degree
37.4%
+5.8 ptssince 2000
from 31.6% in 2000
US average: 10.2%
Section 06

Commute & transportation

Average commute
21.2 min
+59%since 2000
from 13.4 min in 2000
US average: 25.2
Drive alone to work
70.9%
−2.3 ptssince 2009
from 73.2% in 2009
US average: 76.2%
Carpooled to work
8.0%
+1.4 ptssince 2009
from 6.6% in 2009
US average: 10.4%
Public transit
5.9%
+0.1 ptssince 2009
from 5.8% in 2009
US average: 4.7%
Worked from home
11.1%
+0.3 ptssince 2009
from 10.8% in 2009
US average: 4.1%
Walked to work
2.3%
+0.4 ptssince 2009
from 1.9% in 2009
US average: 2.8%
Biked to work
0.6%
−0.2 ptssince 2009
from 0.8% in 2009
US average: 0.5%
No vehicle available
3.9%
−0.2 ptssince 2009
from 4.1% in 2009
US average: 8.7%
Section 07

Work & employment

Self-employed
11.2%
+0.7 ptssince 2009
from 10.6% in 2009
US average: 12.9%
Management & professional
71.9%
−14.4 ptssince 2009
from 86.3% in 2009
US average: 35.2%
Section 08

People & community

Male
49.2%
−0.1 ptssince 2009
from 49.3% in 2009
Female
50.8%
+0.1 ptssince 2009
from 50.7% in 2009
Foreign born
17.1%
+1.5 ptssince 2009
from 15.6% in 2009
US average: 12.8%
Veterans
10.7%
−36.7 ptssince 2009
from 47.5% in 2009
US average: 9.9%
Drill deeper

Places similar to Mercer Island

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Pop 30,418
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Head to head

Compare Mercer Island to nearby cities

MERCER ISLAND VS
Newcastle
Income$160,278+32%
Home value$1,205,600+35%
Population13,128−48%
SEE FULL COMPARISON →
MERCER ISLAND VS
Bellevue
Income$165,576+37%
Home value$1,340,300+50%
Population154,193+507%
SEE FULL COMPARISON →
MERCER ISLAND VS
Bryn Mawr-Skyway
Income$90,969−25%
Home value$655,200−27%
Population17,638−31%
SEE FULL COMPARISON →
MERCER ISLAND VS
Renton
Income$100,432−17%
Home value$672,600−25%
Population104,975+313%
SEE FULL COMPARISON →
Frequently asked

How many people live in Mercer Island, Washington?

Mercer Island, Washington has about 22,699 residents according to the 2010 American Community Survey.

What is the median household income in Mercer Island, Washington?

The typical household in Mercer Island, Washington earns about $120,994 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 $895,800, and the typical rent is about $1,421 a month.

How educated are people in Mercer Island, Washington?

About 76.3% 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 2.7% 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 1,883 residents, a change of about 9 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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