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2025 Compare Cities People:
Mercer Island, WA vs Friday Harbor, WA

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Highlights
- Friday Harbor is 0% more densely populated than Mercer Island.
- People are 35.0% less likely to be married in Friday Harbor.
- The Median Age is 4.5 years younger in Friday Harbor.
 Mercer Island, WAFriday Harbor, WAUnited States
 Population  Unlock2,587329,725,481
 Female Population52.9%  Unlock50.5%
 Male Population47.1%  Unlock49.5%
 Median Age  Unlock4138.4
 space3
 Population - 201022,770  Unlock309,327,143
 Population - 2000  Unlock1,989285,036,114
 Population - 199020,816  Unlock251,960,433
 Pop. 2000 to Now  Unlock27.9%15.6%
 Pop. 1990 to Now24.5%  Unlock30.8%
 space4
 Population Density  Unlock1,197.193.4
 Land Area6.4  Unlock3,531,905.4
 Water Area  Unlock0.1264,836.8
 space
 Est. Total Population By Age
 Mercer Island, WAFriday Harbor, WAUnited States
 Age 0 to 43.8%  Unlock5.9%
 Age 5 to 9  Unlock5.8%6.1%
 Age 10 to 148.2%  Unlock6.6%
 Age 15 to 17  Unlock3.8%3.9%
 Age 18 to 202.5%  Unlock4.0%
 Age 21 to 24  Unlock2.1%5.2%
 Age 25 to 348.2%  Unlock13.8%
 Age 35 to 44  Unlock13.3%12.9%
 Age 45 to 5416.9%  Unlock12.6%
 Age 55 to 59  Unlock6.1%6.7%
 Age 60 to 646.5%  Unlock6.3%
 Age 65 to 74  Unlock10.6%9.6%
 Age 75 to 845.5%  Unlock4.5%
 Age 85 and over  Unlock1.8%1.9%
 space1
 Race
 Mercer Island, WAFriday Harbor, WAUnited States
 White66.8%  Unlock59.4%
 Black  Unlock1.0%12.2%
 Asian21.3%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.1%  Unlock0.2%
 Other  Unlock0.2%0.4%
 Two or More Races6.9%  Unlock3.2%
 Hispanic  Unlock14.8%18.4%
 space2
 Marriage & Family
 Mercer Island, WAFriday Harbor, WAUnited States
 Married Population64.7%  Unlock49.8%
     Currently Married  Unlock41.5%48.0%
 Married but Separated0.4%  Unlock1.8%
 Single Population  Unlock57.9%50.2%
 Never Married21.7%  Unlock33.8%
 Divorced  Unlock18.6%10.8%
 Widowed5.8%  Unlock5.6%
 space5
 Household Size  Unlock2.222.60
 Households9,758  Unlock124,010,992
 Family Households  Unlock59880,755,759
     Married couple, w/children42.3%  Unlock30.5%
     Married couple, no children  Unlock42.0%42.9%
 Non Family Households2,855  Unlock43,255,233
     Single householder, w/children  Unlock25.3%15.8%
     Single householder, no children5.0%  Unlock10.8%
Voting
Reviews for Mercer Island    4 Reviews
Megan · Mercer Island, WA
Nice place to live with great schools
Over 17 years ago

Mercer Island is a wonderful family community. It feels much more "small town" than a city even though it has a population of 20,000+. People say hello and watch out  More

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A resident · Mercer Island, WA
Mercer Island - Is there a "there" there?
Over 17 years ago

Mercer Island is a suburb of Seattle, located on an island in Lake Washington. The best thing about Mercer Island is its strategically central location relative to the  More

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A resident · Mercer Island, WA
Mercer Island, WA - a suburb on an island
Over 17 years ago

Mercer Island is a suburb of Seattle, located on an island in Lake Washington. The best thing about Mercer Island is its strategically central location relative to the  More

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Reviews for Friday Harbor    2 Reviews
Mia · Eastsound, WA
A Smart, beautiful Town w/ housing issues for lo
Over 1 years ago

Beautiful place to retire and live, but a very expensive area to buy property and maintain. Services are limited and labor is in big shortage. So be prepared to pay up  More

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Don · Seattle, WA
Where Eagles Soar and Orcas Play
Over 17 years ago

I lived on the Island for a couple of the winter months in 2007. I house sat a beautiful home on acreage with a view of the water. The Island is very quiet during the  More

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Learn More About Mercer Island, Washington
Overview
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Learn More About Friday Harbor, Washington
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