The 608 area code covers Madison, Janesville and 141 more places in Wisconsin.
Area code 608 is in Wisconsin, on Central Time. In the 608 area, phone numbers are given out most in Dane County, then Rock and La Crosse counties. It has been in service since 1955. 353 covers the same area, so two neighbours can have different area codes.
- Where
- 8 counties in Wisconsin, mostly Dane County, Rock County and La Crosse County
- Time zone
- Central Time
- In service since
- 1955
- Shares its area with
- 353 (since 2023)
- Prefixes in use
- 785
- How to dial
- Local calls need all 10 digits: 608-555-0142.
Find out who called you from a 608 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (608) number is on today, use our free carrier lookup.
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Madison holds 25% of the phone prefixes in area code 608.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 785 prefixes in use shows where 608 numbers are actually given out.
- Madison197 prefixes, 25%
- Janesville45 prefixes, 6%
- La Crosse41 prefixes, 5%
- Beloit25 prefixes, 3%
- Middleton17 prefixes, 2%
- Stoughton13 prefixes, 2%
- Monroe13 prefixes, 2%
- Baraboo12 prefixes, 2%
Also served: Tomah, Dodgeville, Portage and Platteville and 131 smaller places.
Wisconsin Bell (AT&T) holds the most phone number prefixes in area code 608: 80 of 785.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 785 prefixes in use in 608 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| Wisconsin Bell (AT&T)AT&T's landline company | 80 | 10% |
| UScellularMobile network | 76 | 10% |
| BrightspeedLandline company | 72 | 9% |
| FrontierLandline company | 57 | 7% |
| AT&T MobilityMobile network | 46 | 6% |
| T-MobileMobile network | 28 | 4% |
| 56 other carriers | 426 | 54% |
75% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
608 has been overlaid once since 1955.
1955
608 goes into service.
2023
On September 15, 2023, 353 is added on top of 608, so new numbers here can get either code.
A 608 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 608 are 563, 262 and 319.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
Wisconsin has 7 other area codes.
These are the questions people ask most about area code 608.
Where is area code 608?
608 covers Madison, Janesville, La Crosse and Beloit and 139 more places in Wisconsin. In the 608 area, phone numbers are given out most in Dane County, then Rock and La Crosse counties.
What state is area code 608 in?
Wisconsin. 608 is a Wisconsin area code on Central Time.
What cities use area code 608?
The places holding the most 608 prefixes are Madison, Janesville, La Crosse, Beloit, Middleton, Stoughton, Monroe and Baraboo, out of 143 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 608?
No single phone company owns 608. NANPA's records show Wisconsin Bell (AT&T) holds the most 608 prefixes, 80 of 785, followed by UScellular and Brightspeed. Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 608 in?
608 is on Central Time.
When did area code 608 start?
608 went into service in 1955.
Is 608 the same area as 353?
Yes. 353 (since 2023) covers the same ground as 608. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial a 608 number?
Local calls need all 10 digits: 608-555-0142.
Is 608 a toll-free number?
No. 608 is a regular area code for Madison and Janesville in Wisconsin, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 608?
The closest are 563 (Davenport, Iowa), 262 (Waukesha, Wisconsin), 319 (Cedar Rapids, Iowa) and 920/274 (Green Bay, Wisconsin), measured between the centres of each area.
Who called me from a 608 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 608 a scam?
608 is a real Wisconsin area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.