Homeowners
- State Farm Group · 24.4%
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- United Serv Automobile Assn Group · 9.4%
- Travelers Group · 7.2%
Directory · Montana · Updated 2026-10-18
Insurance companies licensed in Montana
Every property and casualty insurer admitted in Montana and every eligible surplus lines insurer, with NAIC numbers, the lines each is licensed for, who writes the most of each line, and the market of last resort when nobody else will.
Montana publishes its surplus lines list (228 eligible insurers) but not a licensed-company list a program can read, so the admitted carriers here come from the other states' lists, NAIC market data and Treasury surety licenses.
By Sam Alishahi, independent insurance broker · All states
The market
Who can insure you in Montana
0licensed (admitted) property and casualty insurers on the regulator's list
228eligible surplus lines insurers for hard-to-place risks
219Treasury-certified sureties licensed here
13insurers domiciled in Montana
Bonds
Treasury-certified sureties licensed in Montana
Companies on the U.S. Treasury's Circular 570 (acceptable sureties on federal bonds) that list a Montana license, with each one's federal underwriting limit.
All companies
Every insurer on Montana's lists
Source: the Montana insurance regulator company list, read 2026-10-18 and the surplus lines list. Admitted: no static list of admitted/licensed companies is published on csimt.gov (company lookup is one-at-a-time; 2025 annual report has no company appendix) - admitted left empty. Surplus lines: 'Eligible Surplus Lines Companies' XLSX (sheet '10-14-2026') with COMPANY_NAME | NAIC_COCODE | DOMICILE_STATE; no eligibility date given; every row is US-domiciled (no Lloyd's or other alien insurers on this list - alien insurers are not covered by it); alien = domicile not a US state/territory code (raw kept in domicile_raw). csimt.gov Crawl-delay 10 honored.
Method and source
Source: the Montana insurance regulator company list, read 2026-10-18 and the surplus lines list. Admitted: no static list of admitted/licensed companies is published on csimt.gov (company lookup is one-at-a-time; 2025 annual report has no company appendix) - admitted left empty. Surplus lines: 'Eligible Surplus Lines Companies' XLSX (sheet '10-14-2026') with COMPANY_NAME | NAIC_COCODE | DOMICILE_STATE; no eligibility date given; every row is US-domiciled (no Lloyd's or other alien insurers on this list - alien insurers are not covered by it); alien = domicile not a US state/territory code (raw kept in domicile_raw). csimt.gov Crawl-delay 10 honored. Lines are the regulator's licensed lines grouped into common names; a license to write a line doesn't mean a company sells it to every kind of customer. "Admitted" means licensed by the state and backed by its guaranty fund; "surplus lines" means eligible to take risks the admitted market declines, without rate or form approval and without guaranty fund protection.
Open to use. Cite "Alishahi Insurance insurance company directory" and link to this page. Download every company: CSV · JSON.
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