Grant 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 Grant County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
98857
99357
98858
98860
98851
99103
98824
98848
99349
98853
99133
99123
99344
99321
98832
98823
99135
98837
99115
99116

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

Grant 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 Grant County County?

There are approximately 20 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Grant 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.