Whatcom County, located in the state of Washington, contains a range of ZIP codes that are essential for mail delivery, demographics, mapping, and regional planning. Below is a complete list of ZIP codes associated with this county.

These ZIP codes help identify specific areas and communities within the county, ranging from small towns and villages to broader rural stretches. Whether you’re moving to Whatcom County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
98266
98237
98240
98225
98276
98264
98248
98284
98283
98231
98295
98244
98230
98227
98228
98220
98262
98247
98281
98229
98226

To know more about Whatcom County, click the button below:

Whatcom County Information

Use this tool to find your area details by using zip code.

ZIP Code to County

Note: Some ZIP codes may span across county borders and may be listed under more than one county. This is common in rural or low-population areas where ZIP code regions are broader.

Source: Data compiled from official county records, USPS ZIP code data, and the United States Census Bureau.

Frequently Asked Questions

How many ZIP codes are in Whatcom County County?

There are approximately 21 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Whatcom County overlap with other counties?

Yes, some ZIP codes may span more than one county. This is especially common in less populated or rural areas.