NPA-NXX - 641-591

This is the 641-591 subcode (NPA-NXX) prefix page. Follow a prefix to find the number you are looking for. We divide our pages up to make them more user friendly to navigate!

1. Area Codes
2. 641
3. 641-591

The 641-591 subcode mainly covers Lake Mills in Winnebago county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Iowa state. Many of the numbers in this subcode are Regular Landline registered to Winnebago Cooperative Telecom Association. We hear they employ a large number of people in the Iowa office.
Recently there have been an increase in reported calls, we've had over 10866 comments across our systems for the 641-591 subcode.