Washington County, located in the state of Maine, 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 Washington County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
04619
04628
04643
04658
04666
04652
04622
04606
04657
04649
04668
04413
04492
04626
04490
04611
04424
04631
04667
04694
04671
04491
04654
04623
04691
04454
04630
04648
04680
04655
04686
04637

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

Washington 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 Washington County County?

There are approximately 32 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Washington 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.