Zip lookup · WA

98240
Custer, Washington.

Custer, Whatcom County, WA · Bellingham, WA metro · population 3,593

What it costs per month · 98240 $3,437/mo

to buy the typical home at today's mortgage rate — +$1,945 (+130%) since Jan 2020.

What the home itself did
1 year
Up $5,593 +1%
$649,287$654,880 since Sep 2025
5 years
Up $93,257 +17%
$561,623$654,880 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 98240 $3,437 United States $1,922
$1,000 $2,000 $3,000 2002 2010 2018 2026
  • 98240$3,437
  • United States$1,922

At the last five years' pace, a typical home here doubles in price every 23 years.

Typical home values in zip 98240 rose 0.9% over the past year — slower than the nation's +1.2%.

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

Typical home value $654,880 as of Sep 2026
+0.9%year on year

Typical home value — 98240

Mid-tier homes, smoothed and seasonally adjusted.

$200,000 $400,000 $600,000 2018 2020 2022 2024 2026 98240 $654,880 Bellingham $607,630 United States $366,157
$200,000 $400,000 $600,000 2018 2022 2026
  • 98240$654,880
  • Bellingham$607,630
  • United States$366,157

Within 20 miles

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
4.0 98230 Blaine 18,744 $2,443 $532,529
5.7 98248 Ferndale 28,498 $2,110 $613,637
7.4 98264 Lynden 23,123 $1,971 $616,983
13.5 98226 Bellingham 46,782 $2,024 $640,182
13.7 98276 Nooksack 1,794 — $509,314
14.1 98247 Everson 9,115 $1,875 $601,590
14.3 98225 Bellingham 50,216 $1,776 $652,905
17.7 98262 Lummi Island 957 — $643,334
18.2 98295 Sumas 3,279 — $443,279
19.8 98229 Bellingham 33,298 $2,178 $687,720

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