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).

  • 3017503300 | +1 301-750-3300 Maryland U.S.A.
  • 3017503301 | +1 301-750-3301 Maryland U.S.A.
  • 3017503302 | +1 301-750-3302 Maryland U.S.A.
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  • 3017503310 | +1 301-750-3310 Maryland U.S.A.
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  • 3017503370 | +1 301-750-3370 Maryland U.S.A.
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  • 3017503377 | +1 301-750-3377 Maryland U.S.A.
  • 3017503378 | +1 301-750-3378 Maryland U.S.A.
  • 3017503379 | +1 301-750-3379 Maryland U.S.A.
  • 3017503380 | +1 301-750-3380 Maryland U.S.A.
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  • 3017503398 | +1 301-750-3398 Maryland U.S.A.
  • 3017503399 | +1 301-750-3399 Maryland U.S.A.