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Affinity and military insurers
| # | Insurer | Type | Market share (2025) | AM Best |
|---|---|---|---|---|
| 5 | USAAMilitary-only insurer and bank for service members, veterans and their families; top J.D. Power scores, an A++ rating and SafePilot telematics. | Affinity and military insurers | 6.18% | A++ (Superior) |
| 19 | The HartfordConnecticut insurer founded in 1810 and, since 1984, the exclusive provider of auto insurance designed for AARP members. | Affinity and military insurers | 0.62% | A+ (Superior) |
| 53 | Horace MannSpringfield, Illinois insurer started by two teachers in 1945 that sells auto, home and life coverage to educators, with an Educator Advantage package. | Affinity and military insurers | 0.13% | A (Excellent) |
| 70 | California CasualtyFamily-led insurer founded in 1914 that sells group-endorsed auto and home coverage to educators, first responders and nurses in seven Western states. | Affinity and military insurers | 0.07% | B+ (Good) |
Ranked by 2025 U.S. private passenger auto direct premiums written, from NAIC market share data. NAIC groups combine affiliated companies, so a group may sell under several brand names.