641 Area Code
North Central Iowa, Iowa
Area code 641 is located in North Central Iowa, Iowa. It covers Mason City, Marshalltown, and surrounding areas in the Central time zone (UTC-6). Administered by NANPA.
Where is area code 641?
Area code 641 is located in North Central Iowa, Iowa. It covers Mason City, Marshalltown, and surrounding areas in the Central time zone (UTC-6).
Cities Covered by Area Code 641
Area code 641 primarily serves the North Central Iowa area of Iowa. The exact coverage includes Mason City, Marshalltown, and Ottumwa, along with surrounding communities and suburbs.
Time Zone
Central Time — UTC-6
Area code 641 operates in the Central Time Zone. When calling 641 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 641
Area code 641 was introduced in 2001 as a geographic area code serving North Central Iowa, Iowa. It remains the primary area code for this region. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.