Zip lookup · WA

98188
Seatac, Washington.

Seatac, King County, WA · Seattle-Tacoma-Bellevue, WA metro · population 27,311

What it costs per month · 98188 $3,017/mo

to buy the typical home at today's mortgage rate — +$1,586 (+111%) since Jan 2020.

What the home itself did
1 year
Up $1,534 +0%
$573,250$574,785 since Sep 2025
5 years
Up $75,056 +15%
$499,728$574,785 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.

$1,000 $2,000 $3,000 2002 2006 2010 2014 2018 2022 2026 98188 $3,017 United States $1,922
$1,000 $2,000 $3,000 2002 2010 2018 2026
  • 98188$3,017
  • 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 98188 rose 0.3% over the past year — slower than the nation's +1.2%.

Asking rents in zip 98188 rose 2.5% over the past year — in step with the nation.

Owning the typical home in zip 98188 runs $2,139/mo more than renting one. The gap peaked at $2,339 in Jan 2025.

That is $4,029 a month against $1,889 rent: a $3,017 mortgage payment, plus $396 property tax and $615 insurance & upkeep.

Owning vs renting — zip 98188

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.

$2,000 $3,000 $4,000 2021 2022 2023 2024 2025 2026 Owning all in $4,029 Renting $1,889 Mortgage only $3,017
$2,000 $3,000 $4,000 2022 2024 2026
  • Owning all in$4,029
  • Renting$1,889
  • Mortgage only$3,017

Property tax · $396/mo 0.83% of value a year — the ACS 2020-2024 median bill over the median home value for King County, WA

Insurance & upkeep · $615/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: Seatac, WA — measured over the city limits, which is a different area from this zip.

Asking rent $1,889 as of Sep 2026
+2.5%year on year
Typical home value $574,785 as of Sep 2026
+0.3%year on year

Asking rent — 98188

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

$1,500 $1,750 $2,000 $2,250 2021 2022 2023 2024 2025 2026 98188 $1,889 Seattle $2,250 United States $1,932
$1,500 $1,750 $2,000 $2,250 2022 2024 2026
  • 98188$1,889
  • Seattle$2,250
  • United States$1,932

Typical home value — 98188

Mid-tier homes, smoothed and seasonally adjusted.

$250,000 $500,000 $750,000 2018 2020 2022 2024 2026 98188 $574,785 Seattle $720,147 United States $366,157
$250,000 $500,000 $750,000 2018 2022 2026
  • 98188$574,785
  • Seattle$720,147
  • United States$366,157

Within 20 miles

Showing 30 of 92 zips in range — sorting picks from all 92.

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 98148 Seattle 9,715 $1,796 $592,737
3.0 98057 Renton 12,705 $2,175 $546,421
3.1 98168 Seattle 35,528 $1,943 $566,250
3.4 98055 Renton 24,660 $2,202 $635,419
3.6 98166 Seattle 22,082 $1,776 $807,003
3.8 98178 Seattle 26,748 $2,109 $636,859
3.9 98032 Kent 40,862 $1,951 $524,047
4.0 98198 Seattle 40,463 $2,068 $579,429
4.7 98031 Kent 40,094 $1,935 $651,121
5.3 98146 Seattle 28,573 $1,839 $662,245
6.0 98056 Renton 35,849 $2,314 $828,266
6.5 98030 Kent 38,523 $1,936 $616,348
6.6 98118 Seattle 50,500 $1,983 $706,726
6.7 98108 Seattle 25,529 $2,226 $664,850
7.0 98058 Renton 42,980 $2,362 $707,206
7.6 98106 Seattle 28,690 $2,403 $642,178
7.7 98059 Renton 42,406 $2,344 $919,321
8.2 98136 Seattle 17,252 $2,423 $909,734
8.3 98126 Seattle 22,975 $2,045 $732,462
8.4 98040 Mercer Island 25,307 $2,796 $2,212,672
9.3 98042 Kent 50,216 $2,532 $678,857
9.4 98134 Seattle 645 — $424,988
9.6 98001 Auburn 37,460 $2,707 $616,331
9.6 98006 Bellevue 40,009 $3,757 $1,532,900
9.6 98144 Seattle 33,787 $1,946 $750,104
9.6 98070 Vashon 9,934 $2,966 $875,534
10.0 98003 Federal Way 51,619 $1,894 $551,791
10.0 98002 Auburn 37,509 $1,865 $477,358
10.4 98116 Seattle 28,711 $2,301 $973,130
10.4 98023 Federal Way 50,448 $2,024 $598,598

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