Wisconsin area codes

Codes in service in Wisconsin

Wisconsin has 8 geographic area codes in service: 262, 274, 353, 414, 534, 608, 715, 920. 414 is the oldest, dated 1947, and 353 the newest, dated 15 Sep 2023.1 All of Wisconsin's codes are on Central time.

Area code	NANPA location	NPA in-service date	In-service overlay peers	Time zone	Local calls within the code
262	WI	25 Sep 1999	None listed	Central	10 digits
274	WI	5 May 2023	920	Central	10 digits
353	WI	15 Sep 2023	608	Central	10 digits
414	WI	1947	None listed	Central	10 digits
534	WI	14 Aug 2010	715	Central	10 digits
608	WI	1955	353	Central	10 digits
715	WI	1947	534	Central	10 digits
920	WI	26 Jul 1997	274	Central	10 digits

Scroll the table sideways to see every column. Sources: NANPA (14 October 2026 file).

History and overlays in Wisconsin

Before 1960: 414 (1947), 715 (1947), 608 (1955)
1990s: 920 (26 Jul 1997), 262 (25 Sep 1999)
2010s: 534 (14 Aug 2010)
2020s: 274 (5 May 2023), 353 (15 Sep 2023)

Wisconsin's in-service overlay groups are 274/920; 353/608; 534/715.1

353/608: 608 (1955) was joined by 353 on 15 Sep 2023.
534/715: 715 (1947) was joined by 534 on 14 Aug 2010.
274/920: 920 (1997) was joined by 274 on 5 May 2023.

Dialing in Wisconsin

Local calls within a single area code in Wisconsin (262, 274, 353, 414, 534, 608, 715, 920) are all recorded as 10 digits. From any of Wisconsin's codes, local calls to another area code are all recorded as 10 digits.1

Neighbours of Wisconsin

Regions that border Wisconsin:

Illinois: 17 codes (217, 224, 309, 312, ...)
Iowa: 5 codes (319, 515, 563, 641, ...)
Michigan: 13 codes (231, 248, 269, 313, ...)
Minnesota: 8 codes (218, 320, 507, 612, ...)

Rules that apply to every region are on the area-code reference.

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Sources

Every regulatory and pricing claim on this page links to the primary source it came from. Figures were checked on the date shown at the top of the page; rules and prices change, so verify before relying on one.

NANPA, NPA Database CSV, file dated 14 October 2026; US geographic codes, location, dates, overlay complexes, dialing plan and time zone. Retrieved 14 Oct 2026
https://reports.nanpa.com/public/npa_report.csv