Regional carriers

# Insurer Type Market share (2025) AM Best
9 Auto-Owners InsuranceLansing, Michigan mutual founded in 1916 that sells home insurance only through independent agents in 26 states; the 9th-largest U.S. home insurer. Regional carriers 2.19% A+ (Superior)
10 Erie InsurancePolicyholder-owned reciprocal founded in 1925 that sells home insurance through independent agents in 12 states and DC; the 10th-largest U.S. home insurer. Regional carriers 1.96% A (Excellent)
15 Cincinnati InsuranceOhio insurer founded in 1950 that sells home and auto only through independent agents in 45 states; about 60% of its personal lines premium is high-net-worth. Regional carriers 1.01% A+ (Superior)
18 Mercury InsuranceLos Angeles-based, NYSE-listed insurer selling home insurance through independent agents in 10 states; California's No. 3 homeowners group in 2025. Regional carriers 0.89% A (Excellent)
26 COUNTRY FinancialIllinois Farm Bureau-affiliated mutual group selling home insurance through its own representatives in 19 states; the 3rd-largest home insurer in Illinois. Regional carriers 0.65% A+ (Superior)
30 The HanoverWorcester, Massachusetts insurer founded in 1852 that sells home and auto packages only through independent agents in 19 states, led by Michigan. Regional carriers 0.56% A (Excellent)
35 Shelter InsuranceColumbia, Missouri mutual founded in 1946 as MFA Mutual, selling home, auto and farm coverage through its own exclusive agents across the Midwest and South. Regional carriers 0.41% —
39 NJM InsuranceNew Jersey's largest home insurer, a West Trenton company run for its policyholders that sells direct in NJ, PA, CT, MD and Ohio and pays NJ dividends. Regional carriers 0.36% A+ (Superior)
43 The Andover CompaniesAndover, Massachusetts insurer founded in 1828, sold only through independent agents in eight states; a mutual holding company since January 2026. Regional carriers 0.32% A (Excellent)
44 Mapfre InsuranceU.S. arm of Spain's Mapfre and the former Commerce Insurance of Webster, Mass.; the largest home insurer in Massachusetts, sold through independent agents. Regional carriers 0.29% A (Excellent)
50 Grange InsuranceColumbus, Ohio insurer founded in 1935 by Ohio State Grange members, sold only through independent agents; with affiliate Integrity it writes home in 11 states. Regional carriers 0.25% A (Excellent)
55 Acuity InsuranceSheboygan, Wisconsin mutual founded in 1925 and rated A+ by AM Best and S&P that sells home insurance through independent agents, mostly in the Midwest. Regional carriers 0.22% A+ (Superior)
57 Westfield InsuranceOhio mutual group founded in 1848 that sells homeowners, WesPak home-and-auto packages and WesPak Estate policies through independent agents in nine states. Regional carriers 0.22% A (Excellent)
62 NYCM InsuranceEdmeston mutual founded in 1899 that writes home, auto and business insurance only in New York, through independent agents; the state's No. 6 home insurer. Regional carriers 0.18% A (Excellent)
63 Stillwater Insurance GroupJacksonville insurer, once Fidelity National's P&C arm, selling homeowners in most states via agents and partners; California is about half its premium. Regional carriers 0.18% B++ (Good)
68 Safety InsuranceBoston insurer, founded 1979, selling home and auto coverage through independent agents in Massachusetts, New Hampshire and Maine; MAPFRE is buying it. Regional carriers 0.17% A (Excellent)
70 Vermont Mutual Insurance GroupMontpelier mutual dating to 1828 that sells home, auto and business coverage through independent agents in New England and New York; Vermont's top home insurer. Regional carriers 0.16% A (Excellent)
71 West Bend InsuranceWisconsin insurer founded as a mutual in 1894, now owned by a mutual holding company, selling home insurance through independent agents in six states. Regional carriers 0.16% A (Excellent)
72 Plymouth Rock Assurance (New Jersey)Plymouth Rock's New Jersey side: a policyholder-owned reciprocal whose High Point and AtHome companies sell home insurance in New Jersey and Pennsylvania. Regional carriers 0.15% A- (Excellent)
73 Berkshire Hathaway GUARDBerkshire Hathaway's Wilkes-Barre small-business insurer, which sold homeowners policies through agents from 2018 and has been leaving the line since 2024. Regional carriers 0.15% A+ (Superior)
74 Pacific Specialty InsuranceFamily-owned California insurer founded by Jack McGraw in 1976, selling homeowners, landlord, condo, renters and mobile home policies through agents. Regional carriers 0.14% A- (Excellent)
77 Arbella InsuranceQuincy, Massachusetts mutual founded in 1988 that sells home, condo and auto insurance through independent agents in Massachusetts and Connecticut; AM Best A. Regional carriers 0.13% A (Excellent)
78 Plymouth Rock AssuranceBoston-based, privately held insurer founded in 1982 that sells homeowners in Massachusetts, Connecticut and New Hampshire online, by phone and through agents. Regional carriers 0.13% A- (Excellent)
85 Norfolk & Dedham Group and Union MutualTwo old New England mutuals, Norfolk & Dedham (1825) and Union Mutual of Vermont (1874), affiliated in 2024 and sold through independent agents in eight states. Regional carriers 0.12% A (Excellent)
87 Selective InsuranceNew Jersey commercial insurer, founded 1926, whose personal lines unit sells homeowners through independent agents in 15 states to mass-affluent households. Regional carriers 0.11% A+ (Superior)
88 Kingstone InsuranceHudson Valley insurer with roots in an 1886 fire mutual; writes New York homeowners through agents, Demotech-rated, now testing California surplus lines. Regional carriers 0.11% —
89 North Star MutualCottonwood, Minnesota mutual founded in 1920 that sells home, farm and auto insurance through independent agents in eight Upper Midwest and Plains states. Regional carriers 0.11% A+ (Superior)
91 One Alliance North America InsuranceSun Belt home insurer formerly called Universal North America, sold through independent agents in nine states and owned by 5B Alliance since January 2025. Regional carriers 0.11% B (Fair)
94 PEMCO InsuranceSeattle mutual founded in 1949 that sells home, condo and renters insurance only in Washington and Oregon, by phone, online and through its own agents. Regional carriers 0.10% —
96 DB Insurance (U.S. Branch)U.S. branch of South Korea's DB Insurance, writing homeowners in California through the Aegis General program, plus Hawaii, New York, New Jersey and Guam. Regional carriers 0.10% A+ (Superior)
98 Farmers Mutual of Nebraska (FMNE)Lincoln, Nebraska insurer founded by 22 farmers in 1891, selling home, farm and auto coverage through independent agents in Nebraska and the Dakotas. Regional carriers 0.10% A (Excellent)
100 Donegal Insurance GroupMarietta, Pennsylvania insurer founded in 1889, sold by independent agents; it has been shrinking its personal lines book since 2024 to protect margins. Regional carriers 0.09% A (Excellent)
— Bear River MutualUtah's oldest mutual property insurer, founded in Garland in 1909, selling home, condo, renters and dwelling policies only in Utah through independent agents. Regional carriers — A- (Excellent)
— Co-operative Insurance CompaniesMember-owned Vermont insurer founded in 1915 for Grange farmers, writing home, mobile home, farm and auto coverage only in Vermont and New Hampshire. Regional carriers — A (Excellent)
— Mutual of EnumclawWashington mutual founded by Enumclaw farmers in 1898 that sells its Member's Best home and auto bundle through independent agents in seven Western states. Regional carriers — A- (Excellent)
— Wellington Insurance GroupFort Worth managing general agent that writes Texas homeowners and dwelling fire policies for about a dozen carriers, sold through independent agents. Regional carriers — —

Ranked by 2025 U.S. homeowners multiple peril direct premiums written (states and U.S. territories), from the NAIC 2025 Market Share Reports for Property/Casualty Groups and Companies. NAIC groups combine affiliated companies, so a group may sell under several brand names. Brands listed without a rank are part of a larger group or outside the top 100.