641 area code
Where the 641 area code is, its overlay and how to dial a +1 641 number from anywhere.
The 641 area code is in Marshalltown, Iowa, United States (Central (CT)). To call from abroad: +1 641 555-0123.
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
+1 641 555-01231 641 555-0123Cities in the 641 area code
A 641 number is usually in one of these places in Iowa — 3 counties.
Other Iowa area codes
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.
Number holders in area code 641
Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 605 prefixes are in use in 641, shared by 76 companies. The largest holders:
| Company | Prefixes | Share |
|---|---|---|
| Windstream Iowa Communications, Inc. | 60 | 10% |
| Cellco Partnership Dba Verizon Wireless | 46 | 8% |
| United States Cellular | 39 | 6% |
| Windstream Iowa Communications, Inc. - North | 32 | 5% |
| Qwest Corporation | 30 | 5% |
| Onvoy Spectrum, LLC | 29 | 5% |
Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.
Complaints about 641 numbers
- Reports to the FTC, last 30 days
- 322
- Recorded messages or robocalls
- 71%
- Rank among area codes
- #276 of 670
- Most reported subjects
- Other (143)
- Reducing your debt (credit cards, mortgage, student loans) (77)
- Medical & prescriptions (42)
Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.
Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).
All US area codes United States +1 Map of area code 641 — cities & rate centres