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Theilen Insurance Agency Inc.
519 4th ST SW
PO Box 1066
Mason City, IA 50401
Phone (641)424-9751
Fax (641) 424-9862
Jerry Theilen, Agent

About Us

WIFE Mary (Schmall) Theilen married for thirty-seven years

SON Jason and spouse Mary (Noga) Theilen two daughters and two sons they did it the hard way no twins.

DAUGHTER Katie and spouse Scott Nelson proud parents of twin sons born January 01,2002
Current television celebrities Blake and Jacob Nelson

DAUGHTER Tanya and spouse Brian Dadisman 

Life long resident of Cerro Gordo County, most of my life residing here in Mason City

Graduated from Mason City High School. Also graduated as a Journeyman Ironworker from Des Moines Local #67 apprenticeship program, after three years of apprenticeship training. Opened my first insurance agency with Farmers Ins Group in 1981 and decided in 1996 the Independent Agency System was a better way. Opened Theilen Insurance Agency Inc started on 840 12th St when I met Al who owned the buildings at that time.
Had an opportunity to move to current location 519 4th ST SW about five years ago.

Member and past board member of the North Iowa Community Credit Union. Was a member and 1 time President of the Exchange Club of Mason City for about 25 years.
Coached 8 years of knights of Columbus little league baseball while my son was playing. Past treasurer of the Cerro Gordo County Democrats Central Committee. Candidate for Iowa Senate district 10 seat in 2000. Best luck I have ever had was not being elected so I did not have to learn to lie like a politician. Current Member and Vice President of the North Iowa Shrine Club. Also member of Benevolence Lodge #145 of Ancient Free & Accepted Masons.

Some of the events that we are able to sponsor or help sponsor by you doing business locally with Theilen Insurance Agency Inc.

Able to help sponsor the kids tractor pull at Cannon Ball Day in East Park
Help sponsor our customers kids in their activities like Girl Scout Cookie Sales and help Scouts that may be going on Trips or Kids going on School events.

Click on the image below to see why I took the Trusted Choice Pledge:

Trusted Choice Pledge of Performance

Below please find listings of some of the people we do business with. In no way shape or form does this guarantee that everything will be perfect or even satisfactory for you if you would happen to do business with them. Obviously this is a Disclaimer for these listings below.

Robinson Overhead Doors
(641) 424-0671
Dallas Or Chris

A-1 Drain and Sewer Cleaning
24/7 service (641) 583-1431

True/Roberts Furnace
(641) 423-6274
(641) 430-2885 Mary
(641) 430-8684 Katie
Pedal Tractor Pull LLC
(641) 896-3143  Rick

Two B’s Lawn Care. Inc
(641) 423-1989
Brian Or Brian what a choice

C&W Used Cars
641-424-4357 Chuck
Health Insurance
Glen Dezeil 424-1392
Ted Lindquist, LUTCF
Wicks Auto Repair
(641) 424-9336
WebWise Websites
(641) 903-1650
Hildebrand Real Estate Service
(641) 423-5055 - Pamela
Eager Beaver Tree
(641) 456-8223
Scott Nelson
Hy-Vee East Kitchen Manager
(641) 424-9741



"I have had my Home & Auto Insurance with Jerry at the Theilen Agency for quite a few years already. If we buy a new car or add an additional it is always smooth going to get it changed. And if something new is offered or has changed, he will explain it to us."

Pam Hildebrand



Unhappy, ready for a change, want to be able to smile and enjoy your self while you are working?

Contact Theilen Insurance
and join a fun team.