Area Code 31 – Gothenburg
The phone area code for Gothenburg is 31 (international format +4631). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 31
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Gothenburg
Overview
The Swedish area code 31 is a geographic National Destination Code (NDC) assigned to the city of Gothenburg (Göteborg) and its surrounding metropolitan region. As part of the Swedish national numbering plan, this code is used for fixed-line (PSTN) services and is administered by the Swedish Post and Telecom Authority (PTS). The code covers the central urban area as well as several adjacent municipalities, including Mölndal, Partille, and portions of Härryda, forming a contiguous local calling area.
Geographic Coverage and Administrative Jurisdiction
Gothenburg, located on Sweden's west coast, is the country's second-largest city and the seat of Västra Götaland County. The 031 code serves a densely populated region with a mix of residential, commercial, and industrial zones. Key districts include Centrum, Hisingen, and Angered, along with the neighboring towns of Kungsbacka (though partially served by other codes) and Alingsås (which uses 0322). The exact boundaries are defined by PTS and may include rural areas that are part of the Gothenburg urban area.
Dialing Formats and Caller Instructions
For local callers within Sweden, the national trunk prefix 0 is used before the area code when dialing from outside the local area. Thus, a typical national call to a Gothenburg landline would be dialed as 0-31-XXXXXX. Within the same local area, callers can often omit the area code and dial only the seven-digit subscriber number, but this practice is becoming less common as number portability and unified dialing are introduced. For international callers, the Swedish country code +46 replaces the trunk prefix, so the number is dialed as +46 31 XXXXXX (without the leading zero). For example, a number in Gothenburg might be +46 31 123 4567.
Numbering and Overlay Considerations
Subscriber numbers within the 031 code are seven digits long, allowing for a theoretical capacity of up to 10 million numbers. Currently, there is no overlay code in Gothenburg; the 031 code remains the sole geographic code for the area. However, due to the growth of VoIP and mobile services, the distinction between geographic and non-geographic numbers is blurring. Businesses and residents may retain their 031 numbers even if they move to a different physical location, thanks to number portability, which can affect the accuracy of location-based services.
Practical Usage and Tips
When calling from abroad, always use the international format: +46 31 followed by the seven-digit number. If you are in Sweden but outside the Gothenburg area, dial 031 followed by the number. For local calls within Gothenburg, you may dial just the seven-digit number, but it is safer to include the area code to avoid misdialing. Remember that calls to 031 numbers are typically charged as national fixed-line rates, but rates may vary depending on your operator and subscription plan.