Whatcom County, Washington ZIP codes
19 ZIP codes are in Whatcom County, plus 2 that cross in from neighboring counties. It's part of the Bellingham, WA metro area.
- ZIP codes
- 19
- Population in these ZIPs
- 228,909
- Avg. median income
- $82,800population-weighted
- Cities & towns
- 14
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Whatcom County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 98220 | Acme | 541 | $92,266 | $502,700 |
| 98225 | Bellingham | 50,216 | $63,941 | $652,900 |
| 98226 | Bellingham | 46,782 | $79,375 | $640,200 |
| 98227 PO Box | Bellingham | — | — | — |
| 98228 PO Box | Bellingham | — | — | — |
| 98229 | Bellingham | 33,298 | $90,945 | $687,700 |
| 98230 | Blaine | 18,744 | $86,623 | $532,500 |
| 98231 PO Box | Blaine | — | — | — |
| 98240 | Custer | 3,593 | $110,116 | $654,900 |
| 98244 | Deming | 2,994 | $67,159 | $318,800 |
| 98247 | Everson | 9,115 | $88,724 | $601,600 |
| 98248 | Ferndale | 28,498 | $91,060 | $613,600 |
| 98262 | Lummi Island | 957 | $83,000 | $643,300 |
| 98264 | Lynden | 23,123 | $103,638 | $617,000 |
| 98266 | Maple Falls | 4,245 | $51,361 | $380,900 |
| 98276 | Nooksack | 1,794 | $97,159 | $509,300 |
| 98281 | Point Roberts | 1,288 | $78,125 | $390,600 |
| 98283 | Rockport | 442 | $72,237 | $408,300 |
| 98295 | Sumas | 3,279 | $98,965 | $443,300 |
ZIP codes partly in Whatcom County
These ZIP codes are mostly in a neighboring county but cover part of Whatcom County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 98237 | Concrete | Skagit County | 4,956 | $61,711 | $247,100 |
| 98284 | Sedro Woolley | Skagit County | 27,835 | $93,006 | $517,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Whatcom County
Nearby counties
Frequently asked questions
How many ZIP codes are in Whatcom County, Washington?
19 ZIP codes are mainly in Whatcom County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Whatcom County?
ZIP codes in Whatcom County use the city names Acme, Bellingham, Blaine, Custer, Deming, Everson, Ferndale, Lummi Island, Lynden, Maple Falls, Nooksack and Point Roberts and others.
What metro area is Whatcom County in?
Whatcom County is part of the Bellingham, WA metropolitan statistical area.