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Visit montgomerycountymd.gov/311
For Emergency: 911 | Out of County: 240-777-0311

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U.S Department of Homeland Security
The U.S Department of Homeland Security's phone number is 202.282.8000
Find more information from the following link(s):
  • Homeland Security


  • To speak with a Customer Service Representative, please call 311 during business hours.