Quick answer
Wisconsin has 7 active geographic area codes covering Milwaukee, Kenosha, Green Bay. The most-recognized codes are 414, 608, 715, serving Milwaukee and the Milwaukee County region.
- Total codes
- 7
- Top metro
- Milwaukee
- Time zone
- CT
- Largest code
- 414 (Milwaukee)
- NXX prefixes in use
- 3,647
- Most saturated
- 608 (~99%)
Area codes in Wisconsin
Wisconsin is served by 7 active geographic area codes in the North American Numbering Plan. These codes were assigned between 1947 and 2023 as population and call demand grew across the state.
Across Wisconsin's 7 area codes, our data counts 3,647 assigned central-office (NXX) prefixes in service. The most heavily loaded is 608 (Madison), with about 99% of its ~792 usable prefixes assigned, and 3 of the state's codes sit at 90%+ capacity — which is why overlay codes keep being added. See the full NXX prefix allocation analysis across US area codes. (Prefix data: localcallingguide.com / NANPA, 2026.)
| Code | Primary City | Region | Established | Overlay Codes | Population |
|---|---|---|---|---|---|
| 262 | Kenosha | Southeastern Wisconsin | 2001 | — | 900,000 |
| 353 | Madison | Southern Wisconsin | 2023 | 608 | 800,000 |
| 414 | Milwaukee | Milwaukee County | 1947 | — | 950,000 |
| 534 | Wausau | Northern Wisconsin | 2008 | 715 | 600,000 |
| 608 | Madison | Southern Wisconsin | 1947 | 353 | 800,000 |
| 715 | Eau Claire | Northern Wisconsin | 1947 | 534 | 600,000 |
| 920 | Green Bay | Eastern Wisconsin | 1995 | — | 900,000 |
Time zones in Wisconsin
All area codes in Wisconsin fall in the CT time zone.
- CT — area codes: 262, 353, 414, 534, 608, 715, 920
Top metros and their area codes
Below are the primary cities in Wisconsin and the area codes that serve each metro. Cities with multiple codes share geography due to overlay assignments added as demand grew.
Wisconsin area code coverage by region
This regional breakdown maps each Wisconsin area code to the part of the state it serves. Wisconsin's codes split across 5 regions — pick the code that matches the area you want to reach.
- Eastern Wisconsin — area code: 920 (Green Bay)
- Milwaukee County — area code: 414 (Milwaukee)
- Northern Wisconsin — area codes: 534, 715 (Wausau, Eau Claire)
- Southeastern Wisconsin — area code: 262 (Kenosha)
- Southern Wisconsin — area codes: 353, 608 (Madison)
Why get a local Wisconsin number?
A Wisconsin area code number gives your business three core advantages:
- Local trust signal. Customers in Wisconsin recognize local area codes as their own. A familiar caller ID builds immediate credibility for service businesses, sales teams, and patient communication.
- Higher answer rate. Calls from a local area code are answered far more often than toll-free or out-of-area numbers — industry data puts the lift at 20–40%. That difference matters most for outbound sales, appointment confirmations, and service callbacks.
- Targeted marketing. Advertising a local Wisconsin number on print, radio, digital, and outdoor channels converts better than a national 800 number for audiences who prefer doing business locally.
How to get a Wisconsin area code number with DialPhone
Setting up a Wisconsin business number takes under 10 minutes:
- Sign up for a DialPhone plan. Choose any plan starting at $24/user/month. Free 14-day trial, no credit card required.
- Search available Wisconsin numbers. Filter the DialPhone number inventory by state, area code, city, or number pattern.
- Choose your number and configure. Assign your new Wisconsin number to a user or team, configure call routing, voicemail, AI receptionist, and business SMS.
- Port your existing number (optional). Already have a Wisconsin number? Free number porting completes in 2 to 5 business days with zero service interruption.