Policyholder-owned · Marshfield, Wisconsin
Protecting Wisconsin homes, farms & autos since 1898
Your local mutual insurance leader for service and stability — owned by the policyholders we protect, backed by more than 125 years of keeping our promises.
1898
Founded in Marshfield
100%
Policyholder-Owned
111
Independent Agencies
FSR®
Rated by Demotech, Inc.
What We Protect
Coverage built for the way you live
Package your property, auto, and umbrella coverage with one local company that answers to you — not to shareholders.
Homeowners
Comprehensive protection for owner-occupied residences, tailored with several residential program options.
Farmowners
Coverage for your home and your farming operation — barns, buildings, and scheduled or unscheduled farm property.
Auto
Personal and commercial auto coverage crafted for you, your family, and your farming operations.
Country Homeowners
Rural residences with incidental farming operations or a limited number of livestock or horses.
Mobile Homes
Property coverage for owner-occupied mobile homes permanently sited at fixed locations.
Umbrella & More
Excess liability protection, plus commercial, rental, and seasonal property coverage.
Pay your bill online — anytime
Home and farm policy payments are quick and secure through our online payment portal. For auto policy payments, please call us at 800-505-1898.
Our Story
A mutual built by neighbors, for neighbors
McMillan Grange Mutual Fire Insurance Company wrote its first fire policy on August 15, 1898. More than a century — and several mergers — later, McMillan Warner Mutual is still owned by the policyholders it serves, still headquartered in Marshfield, and still answering the phone when you call.
Local Help
111 independent agencies across Wisconsin
From Marshfield to Mauston to New Holstein, a local independent agent is ready to tailor coverage to your home, farm, or business.