City of Herndon


240 Area code: Herndon, Fairfax - Landline

Directory Numbers

How to dial a U.S. number internationally:

  • Start with your country's exit code (e.g., 011 for the U.S. or Canada).
  • Dial the U.S. country code (+1).
  • Dial the 10-digit phone number (area code + local number).

  • 2403031500 | +1 240-303-1500 Maryland U.S.A.
  • 2403031501 | +1 240-303-1501 Maryland U.S.A.
  • 2403031502 | +1 240-303-1502 Maryland U.S.A.
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  • 2403031511 | +1 240-303-1511 Maryland U.S.A.
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  • 2403031518 | +1 240-303-1518 Maryland U.S.A.
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  • 2403031580 | +1 240-303-1580 Maryland U.S.A.
  • 2403031581 | +1 240-303-1581 Maryland U.S.A.
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  • 2403031586 | +1 240-303-1586 Maryland U.S.A.
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