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311 is a special telephone number supported in many communities in Canada and the United States. The number provides access to non-emergency municipal services. The number format follows the N11 code for a group of short, special-purpose local numbers as designated in the North American Numbering Plan.

The telephone number 3-1-1 creates a central hub for local subscribers to access a variety of city services. It is intended, in part, to divert routine inquiries and non-urgent community concerns from the 9-1-1 number which is reserved for emergency service. A promotional website for 3-1-1 in Akron described the distinction as follows: "Burning building? Call 911. Burning question? Call 311."^[1]

Many cities also accept comments through online interfaces. An Open 311 application programming interface is also available for these services.

The first use of 3-1-1 for informational services was in Baltimore, Maryland, where the service commenced on 2 October 1996.^[2] 3-1-1 is intended to connect callers to a call center that can be the same as the 9-1-1 call center, but with 3-1-1 calls assigned a secondary priority, answered only when no 9-1-1 calls are waiting. This system is intended to extend the system such that true emergency callers are answered quickly with highest priority.

The largest 3-1-1 operation in North America operates in New York City, which was implemented in March 2003.^[3]

The Canadian Radio-television and Telecommunications Commission (CRTC) reserved the use of 3-1-1 for non-emergency municipal services throughout Canada^[4] on 5 November 2004. The first Canadian 3-1-1 service opened in Calgary, Alberta on 18 May 2005.

Historically, the 311 code was used by some telephone companies for testing purposes. In Alberta, 311 was the automatic number announcement circuit (ANAC) until 1 April 2005 when this was changed to 958–6111 to make way for the 3-1-1 service.

Since 2020, National 311 Day has been an event held on March 11 (3/11) to spread awareness about 3-1-1 systems.^[5][6]

3-1-1 service is generally implemented at the local level; in some cities, it is also used for various municipal calls.

Examples of calls intended for 3-1-1 include:

• abandoned vehicles in roadway
• code and housing violations
• dead animal removal
• debris in roadway^[7]
• graffiti removal
• illegal burning
• non-working streetlamps, parking meters, traffic lights
• noise complaints
• parking law enforcement
• parks and recreation concerns
• potholes, sinkholes and utility holes in streets
• public safety concerns
• rat or rodent infestation
• reporting stolen vehicles

On March 3, 2010, the Federal Chief Information Officer of the United States, Vivek Kundra, announced the creation of a uniform Open 311 application programming interface for these services.^[8] In 2009 at TechCrunch 50, CitySourced first launched 'Mobile 311' to allow citizens to submit issues directly from a smartphone to their local government.^[9] The online 311 service SeeClickFix, which partners with news organizations to promote reported issues, is available across the United States but does not connect to municipalities with^{[dubious – discuss]} their permission or knowledge except in a few select cases.

Open 311 is used internationally, for example by FixMyStreet in the United Kingdom.^[10]

311 services works with some cellular phone providers, and about one-third of all 311 calls in the USA originate from cell phones rather than landlines,^[11] while cell-phone carriers gradually add the service to their networks.

3-1-1 is available in several major American cities, including:

3-1-1 is also available in an increasing number of US counties and smaller towns, for example:

The service is available in the following communities (with starting date):

Places such as Panama, Puerto Rico and Costa Rica have implemented nationwide 311 centers.

In the Republic of Panama, the Centro de Atencion Ciudadana (3-1-1)^[26] is legally responsible for the centralized reception of citizen complaints, requests, suggestions and consultations to government agencies or municipalities. It operates 24 hours a day, seven days a week and 365 days a year, receiving over a million citizen contacts on an annual basis through its toll-free line, self-service portal, mobile application and social media accounts.

On a yearly basis, the dispatchers in Finland's 112 service receive some 800,000 non-urgent calls. In order to curb this problem, which ties up precious resources, a committee proposes that Finland launch a new telephone number—116 115—for such calls. Calls to this number would also be free of charge.^[27]

In Germany, 115 is a single access number to communal, regional and federal administrations.

Sweden has introduced a system with which less-urgent callers can call 114 14 to get connected to the local police station. Depending on current load and situation, however, the call could potentially be connected to any station in Sweden. Calls to this number are charged according to the same rates as any other national calls.^[28]

In all parts of the United Kingdom, the non-emergency number for contacting the police is 101.

The cost of city services in Baltimore has been dramatically reduced by the combination of the 3-1-1 service and CitiStat.^{[citation needed]}

While Baltimore was the first city to use 311 as a police non-emergency number, in January 1999, Chicago initiated the first comprehensive 3-1-1 system, by providing information and tracking city services from intake to resolution, in addition to taking non-emergency police calls. When the new service was launched, information regarding all city services, service requests, assistance in reaching various city departments and public offices, and a variety of information ranging from information about the city's Blue Bag recycling program to special events schedules could be obtained by calling 3-1-1. This also supplanted the need to remember or find the number (312) 744–5000, which, until then, acted as a switching station for reaching various city departments and employees, as well as Chicago Police non-emergency (dialing this number today directs you to a 3-1-1 center operator from any area code). Since its launch, Chicago 3-1-1 has won numerous national awards, including the Innovations in American Government Award^[29] from the Ash Institute for Democratic Governance and Innovation at Harvard University's John F. Kennedy School of Government in 2003. In addition to providing seamless delivery of city services to residents, the call center serves as a backup to the city's 911 call center.

In Orange County, Florida, in 2004, while the 3-1-1 system was still being piloted, three hurricanes struck Central Florida. The unusual occurrence damaged homes and businesses throughout the Orlando area. The pilot program used a seven-digit number (initially 836–3111) and it was this number that received the demands for post-hurricane services. This experience tested and proved the value of the program and Orange County immediately activated the 3-1-1 number for governmental customer service.

In New York City, 3-1-1 is used by city officials as one of several sources of measurement and information about the performance of city services. Important dates in the history of New York's 3-1-1 service include December 20, 2005, when it received its record high of 240,000 calls, due to the first day of the 2005 New York City transit strike, and June 20, 2007, when it received its 50 millionth call.^[3]

In San Francisco, 3-1-1 is the number for the City and County of San Francisco. As in New York City, it provides information about city services, such as transit information. San Francisco 3-1-1 was implemented in 2007 shortly after the launch of the T Third Street Muni light rail line. However, it has come under substantial criticism of late because the 3-1-1 system charges the financially strapped Muni system $1.96 for every Muni-related phone call. Some have criticized Mayor Gavin Newsom for stealing Muni funds into the 3-1-1 system.^[30]

In the city of Charlotte and Mecklenburg County, North Carolina, 3-1-1 is also used to find lost pets, get answers to questions about taxes, complain about needed roadway maintenance, get information about flood conditions, make non-emergency police reports, and other government services.^[31]

The City of Philadelphia implemented its 3-1-1 service in 2008. The Philly311 Contact Center provides information to citizens and places service requests for departments across the city. These requests include but are not limited to: missed rubbish collection, graffiti removal, License & Inspection inquiries, and pothole repairs. Philly311 receives over one million calls each year despite not being in service on a 24/7 basis, as is the case in other cities.

• 9-1-1: Emergency telephone number
• Civil defense by country
• National Emergency Technology Guard

• Schellong, A. (2008). Citizen Relationship Management – A Study of CRM in Government, Dissertation, Peter Lang Publishing Group, Frankfurt am Main, Bern, Bruxelles, New York, Oxford.
• ICMA National Study of 3-1-1/CRM Technology
• The 411 on Philadelphia's 311 System. [1]
• MAYOR NUTTER ANNOUNCES PHILLY311 MOBILE APP [2]
• City of Philadelphia Selects ICMA to Assist Philly 311.[3]

• Map of U.S., Canadian and international N-1-1 projects
• Open311 standardized technology for location-based collaborative issue-tracking
• Open311 Wiki