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US area code · Iowa

Area code 641

Where the 641 area code is, its overlay and how to dial a +1 641 number from anywhere.

CoversMarshalltown, IowaTime zoneCentral (CT)TypeGeographic
Quick answer

The 641 area code is in Marshalltown, Iowa, United States (Central (CT)). To call from abroad: +1 641 555-0123.

StateIowa
Main areaMarshalltown
Time zoneCentral (CT)
TypeGeographic
10-digit dialingNot required
In service since25-Feb-2000

The 641 area code is a geographic North American Numbering Plan (NANP) code covering Marshalltown, Iowa. It has been in service since 25-Feb-2000 and sits in the Central (CT) time zone.

How to dial a 641 number

From abroad+1 641 555-0123
Within the US / Canada1 641 555-0123

Cities in the 641 area code

A 641 number is usually in one of these places in Iowa — 3 counties.

Marshalltown MarshallMason City Cerro GordoOttumwa Wapello

Other Iowa area codes

319515563712

Frequently asked questions

Where is the 641 area code?

The 641 area code is in Marshalltown, Iowa, United States (Central (CT)).

Do I have to dial 10 digits for 641?

Local calls within 641 may use seven digits; ten-digit dialling always works.

How do I call a 641 number from another country?

Dial your exit code (or +), then 1, then 641, then the number: +1 641 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 641 number does not pinpoint a street or ZIP code.

Missed a call from +1 641?

In the 30 days to September 24, 2026, 322 unwanted calls showing a 641 number were reported to the US Federal Trade Commission, 71% of them recorded messages or robocalls. That puts 641 at #276 of 670 area codes reported.

Other143
Reducing your debt (credit cards, mortgage, student loans)77
Medical & prescriptions42
Dropped call or no message22
Before you call back
  • If you do not know anyone in Iowa, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 641 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 641 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 641:

Windstream Iowa Communications, Inc. 60Cellco Partnership Dba Verizon Wireless 46United States Cellular 39Windstream Iowa Communications, Inc. - North 32Qwest Corporation 30Onvoy Spectrum, LLC 29

About 16% of the 605 prefixes in use belong to mobile carriers: a 641 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 641 — cities & rate centres