Area code 920

Where area code 920 is

920 is one of 8 geographic area codes serving Wisconsin; NANPA records its in-service date as July 26, 1997. It is an overlay: 920 and 274 cover the same territory, so neighbors on the same street can have different area codes. It is in the Central time zone. The places with the most assigned exchanges include Green Bay, Appleton, Oshkosh, Fond du Lac, and Sheboygan. By population, its largest named places are Green Bay, Appleton, Oshkosh, Sheboygan, and Fond du Lac.

Where 920 numbers are local

920 holds 21% of the 3,681 central office codes assigned in Wisconsin, the 3rd most of the state's 8 codes. 107 Census places could be matched to rate centers with 920 exchanges; the most populous are Green Bay (106,000), Appleton (75,344), Oshkosh (67,242), and Sheboygan (49,624). Each place page lists the exact prefixes and carriers for that town.

Dialing 920 numbers

According to NANPA's dialing-plan data, local calls within 920 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit dialing for all calls permissible at each service providers discretion."

Phone companies in area code 920

65 carriers hold the 785 central office codes assigned in 920. Wisconsin Bell INC has the most, with 141 (18%). 601 of the codes (77%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Rate centers and towns in 920

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 920 has codes in 126 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

920 code assignments over time

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 785 are assigned in 920, 98% of 800. 81 were assigned in 2020 or later.

Using area code 920 for business calls

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Porting a number you already use in area code 920 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

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