City of Columbia


301 Area code: Columbia, Howard - 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).

  • 3016294300 | +1 301-629-4300 Maryland U.S.A.
  • 3016294301 | +1 301-629-4301 Maryland U.S.A.
  • 3016294302 | +1 301-629-4302 Maryland U.S.A.
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  • 3016294377 | +1 301-629-4377 Maryland U.S.A.
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  • 3016294397 | +1 301-629-4397 Maryland U.S.A.
  • 3016294398 | +1 301-629-4398 Maryland U.S.A.
  • 3016294399 | +1 301-629-4399 Maryland U.S.A.