Where is area code 353?

Area code 353 is in Wisconsin. It covers Madison, DeForest and Windsor.

What time zone is area code 353?

Area code 353 is in the Central time zone.

Is 353 a toll-free number?

No. 353 is a geographic area code in Wisconsin. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.

Why does 353 share its area with 608?

353 and 608 form an overlay: they cover the same territory, so new numbers there can get any of these codes, and local calls need all 10 digits.

Will area code 353 run out of numbers?

NANPA's latest forecast projects the 353/608 overlay to exhaust in the first quarter of 2065. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.

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353 Area Code

Area code 353 serves Madison, DeForest and Windsor in Wisconsin. It has been in service since September 15, 2023, when it was split from 608.

StateWisconsin

Time zoneCentral

Local time now…

Prefixes in use13

Overlay with608

Projected to run out2065

Cities and towns served by area code 353

Who issues 353 numbers

Mobile 8%VoIP and cable 77%Landline 15%

Share of the 13 prefixes (the three digits after 353) assigned to each type of carrier. Classification by carrier name, approximate.

Carrier	Prefixes
Onvoy (Sinch)	10
Wavenation	1
T-Mobile	1
Ahoi	1

Cities and towns in area code 353

City	Population	Other area codes
Madison	286,233	608
DeForest	13,094	608
Windsor	10,085	608

Got a call from 353?

A 353 number was originally issued in Wisconsin, but that does not prove the caller is there. 77% of 353 prefixes belong to VoIP and cable providers, whose numbers can be bought online and used from anywhere. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.

All 13 prefixes in area code 353

Format: (353) XXX-YYYY. Carrier is the company the block was originally assigned to; numbers may since have been ported to another carrier.

353-200 Onvoy (Sinch) · Madison
353-201 Wavenation · Madison
353-202 T-Mobile · Highland
353-222 Onvoy (Sinch) · Lone Rock
353-333 Onvoy (Sinch) · Montello
353-353 Onvoy (Sinch) · Belleville
353-444 Onvoy (Sinch)
353-465 Ahoi · Madison
353-529 Onvoy (Sinch) · DeForest
353-666 Onvoy (Sinch)
353-777 Onvoy (Sinch) · Mazomanie
353-888 Onvoy (Sinch) · Albany
353-999 Onvoy (Sinch)

Questions about area code 353

Where is area code 353?: Area code 353 is in Wisconsin. It covers Madison, DeForest and Windsor.
What time zone is area code 353?: Area code 353 is in the Central time zone.
Is 353 a toll-free number?: No. 353 is a geographic area code in Wisconsin. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
Why does 353 share its area with 608?: 353 and 608 form an overlay: they cover the same territory, so new numbers there can get any of these codes, and local calls need all 10 digits.
Will area code 353 run out of numbers?: NANPA's latest forecast projects the 353/608 overlay to exhaust in the first quarter of 2065. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.