# Area code 641

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Area code for a central portion of Iowa

Numbering plan areas of [Iowa](/source/Iowa) with the red area indicating area code 641

**Area code 641** is a telephone [area code](/source/Area_code) in the [North American Numbering Plan](/source/North_American_Numbering_Plan) (NANP) for the central region of the [U.S. state](/source/U.S._state) of [Iowa](/source/Iowa). The numbering plan area (NPA) includes [Marshalltown](/source/Marshalltown%2C_Iowa), [Mason City](/source/Mason_City%2C_Iowa), and [Ottumwa](/source/Ottumwa%2C_Iowa). The area code was created in a [split](/source/Area_code_split) of [area code 515](/source/Area_code_515) on July 9, 2000, which was the first split in Iowa since the establishment of the area code system in 1947.

In 2006, various companies began using Iowa's 641 as a number to access [voice over IP](/source/Voice_over_IP) gateways, including one which purported to allow users to "call China for free".[1] The scheme, no longer in operation, was based on the wholesale cost of calls to rural Iowa being substantially more than the cost of Internet calls to [China](/source/China).

## See also

- [List of Iowa area codes](/source/List_of_Iowa_area_codes)

## References

1. **[^](#cite_ref-1)** ["Call China For Free"](https://web.archive.org/web/20070208231638/http://www.callchinaforfree.com/). CallChinaForFree.com. Archived from the original on 8 February 2007.

## External links

- [List of exchanges from AreaCodeDownload.com, 641 Area Code](https://web.archive.org/web/20090208103646/http://areacodedownload.com/641/index.html)

- ["Area Code Maps"](https://www.nanpa.com/resources/area-code-maps). [North American Numbering Plan Administrator](/source/North_American_Numbering_Plan_Administrator).

Iowa area codes: 319, 515, 563, 641, 712 North: 507/924 West: 515, 712 area code 641 East: 319, 563 South: 660 Minnesota area codes: 218, 320, 507/924, 612, 651, 763, 952 Missouri area codes: 314/557, 417, 573/235, 636, 660, 816/975

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Adapted from the Wikipedia article [Area code 641](https://en.wikipedia.org/wiki/Area_code_641) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Area_code_641?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.