MC311 Customer Service Center is Montgomery County's source for non-emergency government information and services. A call center agent at MC311 is available by calling 311 within the county or dialing 240.777.0311, 711 for MD Relay TTY at 301.251.4850, from anywhere, Monday - Friday 7:00 AM - 7:00 PM. MC311 may also be followed on Twitter @311MC311 during normal business hours. A customer service representative will assist callers with general information or may create a service request that will be forwarded to the appropriate department. In addition, customers who prefer to conduct business with Montgomery County in a language other than English, can request translation assistance. The MC311 Customer Service Center offers a language interpretation service with over 50 languages available.

The MC311 web portal is also another reference source and may be accessed 24/7 at www.MC311.com. Not all topics on the web portal have the capability of creating a service request since specific information and verification is required. MC311 currently does not have a direct email address contact or live chat. However, Monty is an artificial intelligence bot that is not human and may be of service finding information. Monty is located in the bottom right corner of the MC311 homepage in a box entitled "Need Help".