641 area code
Area code 641 is in Iowa, including Mason City, Fairfield, Ottumwa and Marshalltown. It's on Central Time.
Central Time
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Business hours are taken as 9 AM to 5 PM on weekdays. US telemarketing rules only allow sales calls between 8 AM and 9 PM local time.
Cities in area code 641
| City | Time zone |
|---|---|
| Mason City, IA | Central Time |
| Fairfield, IA | Central Time |
| Ottumwa, IA | Central Time |
| Marshalltown, IA | Central Time |
| Centerville, IA | Central Time |
| Oskaloosa, IA | Central Time |
| Newton, IA | Central Time |
| Knoxville, IA | Central Time |
| Eldora, IA | Central Time |
| Charles City, IA | Central Time |
| Grinnell, IA | Central Time |
| Monroe, IA | Central Time |
Other area codes in Iowa
More: look up another area code · time zone converter · US time zones map
Questions people ask
Where is area code 641?
Area code 641 is in Iowa, including Mason City, Fairfield, Ottumwa and Marshalltown.
What time zone is area code 641?
641 is on Central Time (UTC−6, UTC−5 in summer).
What time is it in area code 641 right now?
The live clock at the top of this page shows the current local time in area code 641.