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).

  • 3017506400 | +1 301-750-6400 Maryland U.S.A.
  • 3017506401 | +1 301-750-6401 Maryland U.S.A.
  • 3017506402 | +1 301-750-6402 Maryland U.S.A.
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  • 3017506478 | +1 301-750-6478 Maryland U.S.A.
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  • 3017506498 | +1 301-750-6498 Maryland U.S.A.
  • 3017506499 | +1 301-750-6499 Maryland U.S.A.