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

Zip code
03245
03282
03774
03784
03748
03215
03780
03217
03750
03240
03585
03238
03222
03251
03241
03262
03264
03574
03785
03779
03766
03740
03580
03279
03266
03285
03741
03768
03771
03753
03756
03769
03223
03755
03777
03749
03598
03561
03586
03243
03765

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

Grafton 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 Grafton County County?

There are approximately 41 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Grafton 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.