State · United States
New Hampshire postal codes
253 cities · 281 localities · 281 postal codes · state code NH
Area codes (1)
603
Area codes in use in this state, from NANPA central-office assignments.
Popular cities
All cities (253)
B14
C23
E16
G17
H16
I1
L15
M18
N25
S22
U1
Postal code index (281)
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Data generated on 2026-08-21 · Sources · Report an error.