Area Code 18 – Uppsala
The phone area code for Uppsala is 18 (international format +4618). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 18
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Uppsala
Geographic Overview
The Swedish country code +46, followed by the area code 18, routes calls to the Uppsala region, a historic and administrative hub located approximately 70 kilometers north of Stockholm. Uppsala County (Uppsala län) encompasses the city of Uppsala, Sweden’s fourth-largest municipality, along with surrounding localities such as Knivsta, Enköping (partially), and Östhammar. The code 18 is a geographic National Destination Code (NDC) assigned under the Swedish Numbering Plan, administered by the Swedish Post and Telecom Authority (PTS). It serves both fixed-line PSTN and VoIP subscribers whose numbers are allocated to this specific geographic area.
Dialing Formats
For international callers, the full number is structured as +46 18 XXXXXX, where +46 is the country code, 18 is the area code, and the subscriber number typically consists of 6 to 7 digits. For example, a fixed-line number in Uppsala might appear as +46 18 12 34 56. When dialing domestically from another Swedish region, callers must use the trunk prefix 0 before the area code: 018 XXXXXX. Thus, a call from Stockholm to Uppsala would be dialed as 018 12 34 56. Local calls within the Uppsala area code region can often be made using only the subscriber number, but this depends on the operator and the exact service; to avoid confusion, it is recommended to always use the full national format (018-XXXXXX) or international format (+46 18 XXXXXX).
Geographic Coverage and Administration
The 18 area code covers Uppsala Municipality, the county seat, and its immediate surroundings. Uppsala is renowned for its university, cathedral, and historical significance, and the area code serves both residential and business lines, including government institutions, educational facilities, and commercial enterprises. The region is part of the Stockholm-Uppsala economic corridor, and many businesses maintain a presence in both cities, necessitating clear dialing distinctions.
Overlay and Numbering Considerations
As of the current PTS numbering plan, there is no overlay code for the Uppsala region; the 18 code remains the sole geographic area code for this area. However, number portability allows subscribers to retain their 18 numbers when switching operators, even if they move outside the geographic region, which can lead to non-local assignments. Callers should be aware that a number with the 18 prefix may not always be physically located in Uppsala, but it remains associated with the original geographic allocation.
Caller Instructions
For local callers within Sweden: dial 018 followed by the subscriber number. For international callers: dial the international access prefix (e.g., 00 from most countries, or + from mobile) then 46, then 18, omitting the leading 0. For example, a caller from the United States would dial 011 46 18 12 34 56. VoIP users may need to follow specific provider rules, but the standard E.164 format +46 18 XXXXXX is universally recognized.