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

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Montgomery County 311 Phone Number Outside Area
To reach Montgomery County 311 outside of the county, please dial 240.777.0311.
Find more information from the following link(s):
  • MC311 Home Page


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