City of Frederick


301 Area code: Frederick, Frederick - 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).

  • 3017503500 | +1 301-750-3500 Maryland U.S.A.
  • 3017503501 | +1 301-750-3501 Maryland U.S.A.
  • 3017503502 | +1 301-750-3502 Maryland U.S.A.
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  • 3017503570 | +1 301-750-3570 Maryland U.S.A.
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  • 3017503576 | +1 301-750-3576 Maryland U.S.A.
  • 3017503577 | +1 301-750-3577 Maryland U.S.A.
  • 3017503578 | +1 301-750-3578 Maryland U.S.A.
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  • 3017503581 | +1 301-750-3581 Maryland U.S.A.
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  • 3017503598 | +1 301-750-3598 Maryland U.S.A.
  • 3017503599 | +1 301-750-3599 Maryland U.S.A.