Portsmouth, New Hampshire

4 ZIP codes · Eastern time

ZIP codes (largest first)

03801 · 23,48403802 (PO box)03803 (PO box)03804 (PO box)
Population22,545
StateNew Hampshire
CountyRockingham County
Area code603
Time zoneEastern
Land area15.66 sq mi

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Population: U.S. Census Bureau, ACS 5-year estimates, 2024.