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Grafton, NH ZIP code

The ZIP code for Grafton, New Hampshire is 03240. It is in Grafton County.

Population in these ZIPs
1,354
Avg. median income
$81,600population-weighted
Typical home value
$315,400population-weighted
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ZIP codes within 10 miles

Grafton, NH ZIP code list

Grafton, NH ZIP codes
ZIP codePopulationMedian incomeTypical home value
032401,354$81,563$315,400

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Grafton

Frequently asked questions

What is the ZIP code for Grafton, NH?

The ZIP code for Grafton, NH is 03240.

What county is Grafton, New Hampshire in?

Grafton ZIP codes are in Grafton County.