business phone · 8 min read
Area Code for Madison, Wisconsin
Madison WI uses area code 608 (est. 1955) plus overlay 353 (Sept 2023). Covers southern Wisconsin. History, cities, scam alerts, and how to get a local number.
Madison, Wisconsin — the state capital and home of UW-Madison — runs on area code 608.
The 608 has served southwestern and south-central Wisconsin since 1955. As of September 15, 2023, the region also carries overlay code 353, added because Dane County’s explosive growth exhausted the 608 prefix supply. Both codes cover the same geography. If you’re looking up a Madison number, setting up a WI business line, or just trying to place a callback, here is everything you need to know.
What’s the area code for Madison?
The area code for Madison, Wisconsin is 608, with overlay 353 for new numbers assigned after September 2023.
| Code | Established | Coverage | Notes |
|---|---|---|---|
| 608 | 1955 | Southwestern & south-central WI; 19 counties | Original Madison code; still in active use |
| 353 | Sept 15, 2023 | Same geography as 608 (overlay) | New numbers only; existing 608 numbers unchanged |
Both codes share Central Time (CT) — UTC−6 in winter, UTC−5 in summer. Ten-digit dialing is required for all local calls within the 608/353 region.
608 is not Milwaukee. Milwaukee uses 414 (city) and 262 (suburbs: Waukesha, Racine, Kenosha). If someone gives you a 608 number, they are in Madison or the broader southwestern Wisconsin footprint — not Milwaukee.
No connection to Madison, Alabama (area code 256) or Madison, Mississippi (601/769) either.
Madison + southern WI cities in the 608 area code
Area code 608 covers over 125 cities across 19 counties. Key communities within the footprint:
| City | County | Notable for |
|---|---|---|
| Madison | Dane | State capital, UW-Madison, Epic Systems nearby |
| Verona | Dane | Epic Systems global HQ (largest private employer in WI) |
| Middleton | Dane | Suburb west of Madison |
| Sun Prairie | Dane | Fast-growing eastern Dane County suburb |
| Fitchburg | Dane | Promega HQ, Sub-Zero / Wolf HQ |
| Waunakee | Dane | Northern Dane County |
| Janesville | Rock | Second-largest city in southern WI |
| Beloit | Rock | Illinois border; manufacturing hub |
| La Crosse | La Crosse | Mississippi River city, Gundersen Health |
| Dodgeville | Iowa | Lands’ End HQ |
| Wisconsin Dells | Columbia | Tourism capital of Wisconsin |
| Platteville | Grant | UW-Platteville |
| Baraboo | Sauk | Devil’s Lake State Park |
Dane County alone accounts for the largest share of 608 numbers — and it was Dane County’s 31% population growth between 2000 and 2020 (adding more than 133,700 residents) that drove the 608 prefix exhaustion requiring the 353 overlay.
History of Wisconsin area codes
Wisconsin’s area code map is one of the most thoroughly documented in the Midwest, thanks to the North American Numbering Plan Administrator (NANPA) and the Wisconsin Public Service Commission.
1947 — Two original codes. AT&T assigned area codes 414 and 715 to Wisconsin under the North American Numbering Plan. Code 414 covered southern and eastern Wisconsin; code 715 covered the northern part of the state.
1955 — 608 is created. A border rearrangement of 414 and 715 produced area code 608 for southwestern Wisconsin, including what would become the Madison metro. This placed Madison, La Crosse, and the rural southwest under a single distinct code. 608 was the 100th area code put into service in North America.
1960 — Direct Distance Dialing. Ten-digit intrastate dialing became mandatory as DDD rolled out nationally. Calls within the 608 region now required the area code prefix.
1997 — 920 splits from 414. Rapid growth in the Green Bay / Fox Cities corridor exhausted 414 capacity. Area code 920 was created for eastern Wisconsin on July 26, 1997.
1999 — 262 splits Milwaukee suburbs. With mobile phones and pagers still draining number supply, area code 262 was assigned to southeastern Wisconsin — Waukesha, Racine, and Kenosha counties — leaving 414 for Milwaukee city and inner suburbs only.
2010 — 534 overlays 715. Northern Wisconsin received overlay code 534 to extend capacity in the 715 region.
2021 — 988 conflict forces 10-digit transition. Area code 608 previously had central office code 988 assigned. When Congress designated 988 as the National Suicide Prevention Lifeline in 2020, the FCC required all 608 region subscribers to transition to mandatory 10-digit dialing by October 24, 2021.
2023 — 353 overlays 608. NANPA projected 608 would exhaust available prefixes by early 2024. The Wisconsin PSC approved overlay code 353, which launched September 15, 2023. New subscribers in southwestern Wisconsin are now assigned 353 numbers; all 608 numbers remain active.
Sources: NANPA, Wikipedia (Area codes 608 and 353), Wisconsin Public Service Commission.
608 as Madison and state capital identity
Area code 608 is more than a routing prefix — it carries the identity of Wisconsin’s political and intellectual capital.
Madison is the state capital. The Wisconsin State Capitol dome — modeled after the US Capitol — sits at the heart of the isthmus between Lakes Mendota and Monona. State government agencies, the Governor’s office, and the Wisconsin Legislature all operate on 608 lines.
UW-Madison is a Big Ten flagship. The University of Wisconsin–Madison (enrollment ~45,000) is one of the nation’s top public research universities. The Badgers compete in Big Ten football and basketball, drawing national attention to the 608 footprint every fall. UW Research Park on the west side of campus has spun off dozens of biotech and health IT companies.
Health IT and biotech anchor the economy. Epic Systems — headquartered in Verona, just west of Madison — is the world’s largest provider of electronic health records (EHR) software. More than half of all US patients have their health records in Epic’s system. Promega Corporation (Fitchburg) is a global biotech reagents leader. Exact Sciences (Madison) pioneered the Cologuard colorectal cancer screening test. The 608 footprint is one of the densest health-science corridors in the Midwest.
Landmarks and culture. Henry Vilas Zoo (free admission, in Madison since 1904), the Memorial Union Terrace on the UW lakefront, and the Dane County Farmers’ Market on Capitol Square (one of the largest farmers’ markets in the US) are defining 608 experiences.
The phrase “the 608” functions as a regional identity shorthand — similar to “the 312” in Chicago — signaling south-central Wisconsin pride. As Dane County’s growth has outpaced the rest of the state by more than 2:1, the 608 has earned its reputation as Wisconsin’s most dynamic economic zone.
608 area code spam and scams
Wisconsin-specific spoofing patterns targeting 608 numbers are well documented by state consumer protection agencies.
Fake utility shutoff (Madison Gas & Electric / Alliant Energy). Callers impersonate MGE or Alliant Energy threatening immediate power or gas shutoff unless payment is made by gift card or wire transfer. Both utilities serve the Madison metro; this scam exploits local name recognition.
Fake IRS / SSA notices. Callers claim you owe back taxes or that your Social Security number has been suspended, threatening arrest. The IRS and Social Security Administration never initiate contact by phone.
Fake UW-Madison recruitment. Scammers pose as UW-Madison admissions or graduate program recruiters, requesting fees or personal data. UW-Madison does not charge application fees by phone.
Fake Epic Systems job offers. Given Epic’s prominence as the region’s largest private employer, scammers use fake 608 numbers to offer positions and request onboarding fees or bank details. Epic never charges fees for job offers.
STIR/SHAKEN protection. The FCC-mandated STIR/SHAKEN framework assigns attestation levels to calls: A (fully verified), B (partial), C (gateway/unverified). Spoofed calls typically receive C-attestation or none, triggering “Spam Likely” labels on modern smartphones.
When you get a Madison 608 or 353 number through DialPhone, outbound calls carry STIR/SHAKEN A-attestation — the highest trust level — so your calls reach recipients as verified. See our STIR/SHAKEN glossary entry for a full technical explainer.
How to get a Madison business phone number
A local 608 or 353 number establishes credibility with Madison-area customers — whether you’re a Wisconsin-based business or a national company entering the Madison market.
Step 1: Choose your area code. For Madison proper and Dane County, 608 is the established identity code; 353 is equally valid for new numbers as of September 2023.
Step 2: Sign up with DialPhone. Search available Madison-area numbers during signup at DialPhone pricing. Numbers are assigned in minutes with no hardware required.
Step 3: Assign to your team. Route calls to mobile, desktop app, or a shared team queue. Add an AI receptionist for after-hours coverage or high-volume call routing.
Step 4: Set outbound caller ID. Configure your Madison number as the outbound caller ID so every call you make shows a local 608/353 number — not an 800 number or personal cell.
Step 5: Port existing numbers if needed. Moving a 608 number from another carrier to DialPhone takes 2–5 business days for US local numbers. See our number porting guide for a full walkthrough.
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Famous companies with 608 addresses
The 608 footprint includes some of the most consequential companies in health IT, biotech, insurance, and consumer goods:
Epic Systems (HQ: Verona, 608) — The world’s largest electronic health records provider, with more than 305 million patient records. Epic’s 40-building campus in Verona employs roughly 13,000 people and is one of the largest private campuses in the US. A 608 number is nearly synonymous with health IT in the industry.
American Family Insurance (HQ: Madison, 608) — One of the largest mutual insurance companies in the US, with corporate offices on the Madison west side. The AmFam Institute for Public Health at UW is named for the company.
CUNA Mutual Group (HQ: Madison, 608) — Insurance and financial services provider for credit unions nationwide, headquartered in Madison since 1935.
Promega Corporation (HQ: Fitchburg, 608) — Global life-science reagents and biotech tools company. Promega’s Fitchburg campus anchors the southern Dane County research corridor.
Exact Sciences (HQ: Madison, 608) — Creator of Cologuard, the first FDA-approved non-invasive colorectal cancer screening test. Listed on NASDAQ; one of Wisconsin’s fastest-growing public companies.
Sub-Zero Group / Wolf (HQ: Fitchburg, 608) — Manufacturer of premium Sub-Zero refrigerators and Wolf cooking equipment, family-owned and Fitchburg-based.
Lands’ End (HQ: Dodgeville, 608) — Apparel and outdoor gear retailer, headquartered in rural Iowa County since 1963.
Alliant Energy (HQ: Madison, 608) — Electric and natural gas utility serving 1 million customers across Wisconsin and Iowa. Listed on NASDAQ.
TDS Telecom (HQ: Madison, 608) — Regional broadband and phone carrier serving mid-sized US markets.
Spectrum Brands (HQ: Middleton, 608) — Consumer goods conglomerate (Rayovac batteries, Cutter insect repellent, Black+Decker home).
Madison area code FAQ
Madison area code FAQ
What is the area code for Madison, Wisconsin?
Madison, Wisconsin uses area code 608. It was established in 1955 when the original Wisconsin code (414) was reorganized, and it covers southwestern and south-central Wisconsin — including Dane County, Rock County, La Crosse County, and 16 more counties.
As of September 15, 2023, Madison also has overlay area code 353. New numbers issued in the region may carry 353 instead of 608, but all existing 608 numbers remain unchanged. If you have a Madison contact with a 608 number, nothing about that number has changed.
What is the 353 area code in Wisconsin?
Area code 353 is an overlay for the 608 region in southwestern Wisconsin, including Madison. It launched on September 15, 2023, after NANPA determined that 608 was approaching exhaustion of available central office prefixes — driven by Dane County's 31% population growth between 2000 and 2020.
An overlay means 353 covers the exact same geography as 608. Existing 608 numbers were not changed. New subscribers in the 608 region may be assigned 353 numbers. Both codes require 10-digit dialing.
What cities are in the 608 area code?
Area code 608 covers over 125 cities across southwestern Wisconsin. Major cities include Madison (state capital), La Crosse, Janesville, Beloit, Sun Prairie, Middleton, Verona, Fitchburg, Onalaska, Waunakee, Baraboo, Portage, Wisconsin Dells, Platteville, and Dodgeville.
The code covers 19 counties anchored by Dane County (Madison). Verona — home to Epic Systems, one of the world's largest health IT companies — is entirely within the 608 footprint. Lands' End in Dodgeville and Sub-Zero/Wolf in Fitchburg are also 608.
Is 608 the same area code as Milwaukee?
No. Milwaukee uses area code 414 (city and inner suburbs) and 262 (outer southeastern suburbs including Waukesha, Racine, and Kenosha). Area code 608 is for Madison and southwestern Wisconsin — it does not cover Milwaukee or the Lake Michigan corridor.
This is a common point of confusion. If you need a Milwaukee local number, you want 414 or 262. If you need a Madison local number, you want 608 (or the newer overlay 353).
Does Madison WI have a new area code?
Yes. Area code 353 launched on September 15, 2023 as an overlay for the 608 region. It was introduced because rapid growth in Dane County was exhausting the supply of available 608 prefixes — NANPA projected 608 would run out of combinations by early 2024.
The Wisconsin Public Service Commission approved the overlay at NANPA's request. Existing 608 numbers were not reassigned. If you receive a call from a 353 number, it is coming from the same geographic area as a 608 number — southwestern Wisconsin.
What was Wisconsin's original area code?
Wisconsin's original area codes were 414 and 715, both assigned in 1947 under the North American Numbering Plan. Area code 414 covered southern and eastern Wisconsin while 715 covered the northern part of the state.
In 1955, area code 608 was carved out of the western portion of 414 to cover southwestern Wisconsin including what would become the Madison metro. This was part of a national reorganization as direct distance dialing was being implemented across the US.
Are 608 calls spam?
Not inherently. A 608 call from a real Madison or southern Wisconsin business is legitimate. The problem is spoofing — scammers forge local 608 caller IDs to increase answer rates. Common WI-specific patterns include fake Madison Gas & Electric or Alliant Energy shutoff threats, fake UW-Madison recruitment calls, and fake IRS or Social Security notices.
When you get a Madison number through DialPhone, outbound calls carry STIR/SHAKEN A-attestation — the highest trust level — so your calls appear as verified rather than 'Spam Likely.' The IRS and SSA never initiate contact by phone.
Can I get a Madison 608 number without a Madison office?
Yes. Virtual (VoIP) phone numbers are not tied to a physical address. Any business can get a Madison 608 or 353 number through a cloud phone provider and route calls to any mobile device, desktop app, or team queue.
DialPhone assigns available Madison-area numbers in minutes — no local office, no hardware, no long-term contract. Outbound calls display the Madison number as caller ID. Number porting from another carrier typically takes 2–5 business days for US local numbers.
Get a Madison business number
A verified Madison 608 or 353 number builds immediate credibility with Wisconsin customers — whether you’re headquartered in Dane County or expanding into the Madison market from elsewhere.
DialPhone provides Madison-area numbers with STIR/SHAKEN A-attestation, AI receptionist, call recording, and SMS — all on a single plan with no hardware.
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About the author
Growth Operations Lead at DialPhone
Darshan leads Growth Operations at DialPhone, where he owns three interconnected programs: the comparison content operation, the open VoIP Pricing Dataset, and the test-call methodology used to verify every pricing claim published on the site.
His research process starts with hands-on product trials and live vendor quotes — not marketing pages. Pricing figures are cross-checked against actual invoices and re-verified on a rolling quarterly cycle, with the underlying dataset kept public for independent re-verification. That dataset now covers 40+ VoIP and virtual-number providers across the US and Canada market.
Darshan also leads DialPhone's AI receptionist evaluation program, running structured test-call scenarios across English, Spanish, and French to assess transcription accuracy, intent routing, and escalation behavior. Methodology notes and raw scoring are archived in the research section.
For factual corrections or dataset discrepancies, Darshan can be reached at the DialPhone editorial address. Verified corrections are published as errata with a changelog date — no silent edits.