Area Code 37 – Minas Gerais
The phone area code for Minas Gerais is 37 (international format +5537). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 37
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Minas Gerais
Geographic Coverage and Administration
The +55 37 area code is a geographic National Destination Code (NDC) assigned to the central-western region of the state of Minas Gerais, Brazil. It covers the microregions of Divinópolis, Itaúna, Formiga, Oliveira, and Bom Despacho, among others. Key municipalities served include Divinópolis, Itaúna, Formiga, Oliveira, Pará de Minas, Pitangui, and Bom Despacho. The code is administered by the National Telecommunications Agency (ANATEL) and is allocated exclusively to fixed-line services (PSTN).
Dialing Formats and Procedures
For local calls within the same area code, Brazilian users dial only the eight-digit subscriber number. For example, to call a fixed line in Divinópolis, dial 3221-0000. For long-distance calls from other Brazilian area codes, the complete national format is required: 0 + operator code (XX) + 37 + subscriber number. For instance, from São Paulo (11), using operator 15, dial 0 15 37 3221-0000. International callers must use the country code, area code, and subscriber number: +55 37 3221-0000. When dialing from a mobile phone in Brazil, the same trunk prefix and operator code are used, but the call is treated as long-distance.
Overlay and Numbering Considerations
As of 2025, no overlay code has been implemented for the 37 region, meaning the area code remains unique for its geographic area. All fixed-line numbers in this code have eight digits, beginning with digits 2 to 5, as per ANATEL's numbering plan. Mobile numbers in the same region use distinct area codes (e.g., 37 for mobile is also used, but mobile numbers start with 9). It is important to note that the same area code 37 is used for both fixed and mobile lines in the region; however, the first digit of the subscriber number differentiates the service type: fixed lines typically start with 2, 3, or 4, while mobile numbers start with 9.
Caller Instructions
For local callers within the 37 region, simply dial the eight-digit number. For callers from other Brazilian states, you must include the trunk prefix (0) and the operator code (e.g., 15 for Vivo, 21 for Embratel, 23 for Intelig, etc.). The operator code is chosen by the caller and may affect tariffs. International callers should always use the plus sign (+) or the international access prefix of their country, followed by Brazil's country code (55) and the area code (37). Ensure you drop any leading zero from the area code when dialing internationally.