Zip lookup · WA

98040
Mercer Island, Washington.

Mercer Island, King County, WA · Seattle-Tacoma-Bellevue, WA metro · population 25,307

What it costs per month · 98040 $11,614/mo

to buy the typical home at today's mortgage rate — +$6,308 (+119%) since Jan 2020.

What the home itself did
1 year
Down $17,662 -1%
$2,230,334$2,212,672 since Sep 2025
5 years
Up $289,558 +15%
$1,923,114$2,212,672 since Sep 2021

Monthly payment to buy the typical home

Home value × that month's 30-year mortgage rate, 20% down, principal and interest. This is the line households feel: prices and rates compound each other.

$2,500 $5,000 $7,500 $10,000 $12,500 2002 2006 2010 2014 2018 2022 2026 98040 $11,614 United States $1,922
$2,500 $5,000 $7,500 $10,000 $12,500 2002 2010 2018 2026
  • 98040$11,614
  • United States$1,922

At the last five years' pace, a typical home here doubles in price every 25 years.

Typical home values in zip 98040 fell 0.8% over the past year — slower than the nation's +1.2%.

Asking rents in zip 98040 rose 4.8% over the past year — faster than the nation's +2.7%.

Owning the typical home in zip 98040 runs $12,712/mo more than renting one. The gap peaked at $13,449 in Jan 2025.

That is $15,508 a month against $2,796 rent: a $11,614 mortgage payment, plus $1,525 property tax and $2,369 insurance & upkeep.

Owning vs renting — zip 98040

The owning line is the typical home's monthly payment at that month's rate, plus property tax and insurance & upkeep; the renting line is the typical asking rent; the grey line is the mortgage payment on its own. Same homes, same months, both ways of paying for a roof.

$5,000 $10,000 $15,000 2018 2019 2020 2021 2022 2023 2024 2025 2026 Owning all in $15,508 Renting $2,796 Mortgage only $11,614
$5,000 $10,000 $15,000 2018 2022 2026
  • Owning all in$15,508
  • Renting$2,796
  • Mortgage only$11,614

Property tax · $1,525/mo 0.83% of value a year — the ACS 2020-2024 median bill over the median home value for King County, WA

Insurance & upkeep · $2,369/mo insurance, maintenance and repairs together, from the BLS Consumer Expenditure Survey — the national figure for mortgaged homeowners, scaled to this market's home value. BLS publishes the three bundled and they cannot be split.

Both are priced off the same month's home value, so they rise with the market. Neither is a quote — a specific home's bill depends on its assessment, its age and its insurer.

Zillow also publishes an index for the city itself: Mercer Island, WA — measured over the city limits, which is a different area from this zip.

Asking rent $2,796 as of Sep 2026
+4.8%year on year
Typical home value $2,212,672 as of Sep 2026
-0.8%year on year

Asking rent — 98040

Against the Seattle-Tacoma-Bellevue, WA metro and the national benchmark.

$1,500 $2,000 $2,500 2018 2019 2020 2021 2022 2023 2024 2025 2026 98040 $2,796 Seattle $2,250 United States $1,932
$1,500 $2,000 $2,500 2018 2022 2026
  • 98040$2,796
  • Seattle$2,250
  • United States$1,932

Typical home value — 98040

Mid-tier homes, smoothed and seasonally adjusted.

$500,000 $1,000,000 $1,500,000 $2,000,000 $2,500,000 2018 2020 2022 2024 2026 98040 $2,212,672 Seattle $720,147 United States $366,157
$500,000 $1,000,000 $1,500,000 $2,000,000 $2,500,000 2018 2022 2026
  • 98040$2,212,672
  • Seattle$720,147
  • United States$366,157

Within 20 miles

Showing 30 of 85 zips in range — sorting picks from all 85.

Miles sorted ascending, activate to sort descending Zip activate to sort by Zip City activate to sort by City Population activate to sort by Population Rent activate to sort by Rent Home value activate to sort by Home value
2.4 98118 Seattle 50,500 $1,983 $706,726
3.1 98144 Seattle 33,787 $1,946 $750,104
3.8 98004 Bellevue 39,897 $2,932 $1,913,485
3.9 98006 Bellevue 40,009 $3,757 $1,532,900
4.1 98108 Seattle 25,529 $2,226 $664,850
4.2 98056 Renton 35,849 $2,314 $828,266
4.2 98122 Seattle 43,234 $2,032 $794,534
4.5 98005 Bellevue 21,846 $2,601 $1,501,554
4.6 98039 Medina 2,928 — $4,475,600
4.7 98178 Seattle 26,748 $2,109 $636,859
4.9 98134 Seattle 645 — $424,988
5.1 98104 Seattle 16,542 $2,041 $529,302
5.3 98112 Seattle 23,921 $2,320 $1,321,874
5.3 98007 Bellevue 27,692 $2,381 $969,833
5.7 98101 Seattle 17,153 $2,647 $546,852
5.9 98106 Seattle 28,690 $2,403 $642,178
6.2 98008 Bellevue 27,242 $4,019 $1,291,296
6.2 98168 Seattle 35,528 $1,943 $566,250
6.3 98121 Seattle 21,166 $2,757 $521,052
6.5 98102 Seattle 27,333 $1,958 $736,729
6.5 98057 Renton 12,705 $2,175 $546,421
6.8 98126 Seattle 22,975 $2,045 $732,462
6.9 98109 Seattle 34,328 $2,564 $747,178
7.0 98105 Seattle 49,767 $1,970 $1,121,900
7.0 98059 Renton 42,406 $2,344 $919,321
7.4 98146 Seattle 28,573 $1,839 $662,245
7.6 98116 Seattle 28,711 $2,301 $973,130
7.6 98136 Seattle 17,252 $2,423 $909,734
7.8 98033 Kirkland 40,982 $2,762 $1,517,845
8.2 98119 Seattle 26,879 $2,026 $1,018,013

Coordinates and population from SimpleMaps US Zips (Basic). Rent and home values from Zillow Research.