Washington County, located in the state of Pennsylvania, 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
15301
15333
15419
15019
15363
15339
15368
15434
15012
15022
16102
15060
15321
15432
15378
15004
15331
15017
15026
15360
15345
15348
15365
15021
15054
15102
15129
15126
15332
15427
15340
15477
15313
15358
15379
15336
15314
15317
15311
15312
15417
15367
15053
15330
15361
15078
15067
15033
15057
15241
15329
15370
15377
15324
15366
15342
15323
15423
15055
15429
15483
15350
15412
15063
15376
15322
15357
15347

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 68 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.