Area code 608

Area code 608 at a glance

608 is one of 8 geographic area codes serving Wisconsin; NANPA records its in-service date as January 1, 1955. It is an overlay: 608 and 353 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 Madison, Janesville, La Crosse, Beloit, and Middleton. By population, its largest named places are Madison, Janesville, La Crosse, Sun Prairie, and Beloit.

Places served by 608

608 holds 21% of the 3,681 central office codes assigned in Wisconsin, the most of any code in the state. 139 Census places could be matched to rate centers with 608 exchanges; the most populous are Madison (285,000), Janesville (66,428), La Crosse (51,049), and Sun Prairie (39,253). For a storefront or service area inside 608, the place pages show which prefixes are rated local there.

Ten-digit and seven-digit dialing in 608

According to NANPA's dialing-plan data, local calls within 608 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Ten-digit local dialing means the area code is part of how customers save and recognize your number, so print it in full everywhere. NANPA's dialing-plan note for this code reads: "1+10 digit dialing permissible at service provider discretion."

Carriers with 608 numbers

73 carriers hold the 785 central office codes assigned in 608. Wisconsin Bell INC has the most, with 80 (10%). 588 of the codes (75%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. Numbers can move between carriers through porting, so a code's holder tells you where the block started, not where every number lives now.

Where 608 numbers are rated

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 608 has codes in 159 rate centers. The table lists the rate centers with the most codes, with the matching Census place where the abbreviation could be matched.

608 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 608, 98% of 800. 132 were assigned in 2020 or later.

Getting a 608 number for your business

For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.

If you already have a number in area code 608, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.