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2025 Compare Cities People:
Kennewick, WA vs Mercer Island, WA

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Highlights
- Mercer Island is 0% more densely populated than Kennewick.
- People are 26.3% more likely to be married in Mercer Island.
- The Median Age is 10.2 years older in Mercer Island.
 Kennewick, WAMercer Island, WAUnited States
 Population  Unlock25,506329,725,481
 Female Population50.5%  Unlock50.5%
 Male Population49.5%  Unlock49.5%
 Median Age  Unlock45.538.4
 space3
 Population - 201074,448  Unlock309,327,143
 Population - 2000  Unlock22,036285,036,114
 Population - 199042,155  Unlock251,960,433
 Pop. 2000 to Now  Unlock17.6%15.6%
 Pop. 1990 to Now100.5%  Unlock30.8%
 space4
 Population Density  Unlock3,995.993.4
 Land Area27.4  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 Kennewick, WAMercer Island, WAUnited States
 Age 0 to 47.4%  Unlock5.9%
 Age 5 to 9  Unlock7.3%6.1%
 Age 10 to 146.4%  Unlock6.6%
 Age 15 to 17  Unlock4.3%3.9%
 Age 18 to 203.8%  Unlock4.0%
 Age 21 to 24  Unlock2.9%5.2%
 Age 25 to 3414.7%  Unlock13.8%
 Age 35 to 44  Unlock11.8%12.9%
 Age 45 to 5410.4%  Unlock12.6%
 Age 55 to 59  Unlock7.9%6.7%
 Age 60 to 646.2%  Unlock6.3%
 Age 65 to 74  Unlock10.4%9.6%
 Age 75 to 843.8%  Unlock4.5%
 Age 85 and over  Unlock3.8%1.9%
 space1
 Race
 Kennewick, WAMercer Island, WAUnited States
 White62.7%  Unlock59.4%
 Black  Unlock0.8%12.2%
 Asian2.3%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.7%0.4%
 Two or More Races3.0%  Unlock3.2%
 Hispanic  Unlock3.2%18.4%
 space2
 Marriage & Family
 Kennewick, WAMercer Island, WAUnited States
 Married Population51.2%  Unlock49.8%
     Currently Married  Unlock64.3%48.0%
 Married but Separated1.5%  Unlock1.8%
 Single Population  Unlock35.3%50.2%
 Never Married31.2%  Unlock33.8%
 Divorced  Unlock7.9%10.8%
 Widowed4.3%  Unlock5.6%
 space5
 Household Size  Unlock2.602.60
 Households30,382  Unlock124,010,992
 Family Households  Unlock6,90380,755,759
     Married couple, w/children29.1%  Unlock30.5%
     Married couple, no children  Unlock48.1%42.9%
 Non Family Households9,588  Unlock43,255,233
     Single householder, w/children  Unlock4.6%15.8%
     Single householder, no children9.8%  Unlock10.8%
Voting
Reviews for Kennewick    24 Reviews
RODNEY · Kennewick, WA
Rich culture and world renowned geography.
Over 3 years ago

Born here and lived most of my 48 years here. If people haven't gotten out and explored the versatility of this place to entertain a population at my levels and options  More

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K · Pasco, WA
Smoky air, hot, no greenery, bad food
Over 4 years ago

I have lived here a few years and it’s the worst place I’ve ever been. The “ nice weather” people refer to is 100 degree hot can’t even stand outside at 9am without  More

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Mike · Kennewick, WA
Good place to live
Over 4 years ago

I’ve lived here for 30 years. Very good place to live. Three major rivers meet here. The Columbia, Snake and Yakima rivers. So if you like fishing or boating it’s a  More

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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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Learn More About Kennewick, Washington
Overview
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Learn More About Mercer Island, Washington
Overview
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Religion
Voting
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