Stillwater Property and Casualty Insurance Company · NAIC 16578
Where Stillwater Property and Casualty Insurance Company is admitted, where it's eligible for surplus lines, the lines it's licensed for and how much of each it writes, from state regulators' public lists and market share reports.
Stillwater Property and Casualty Insurance Company (NAIC 16578) is a property and casualty insurer domiciled in New York, part of Wt Holdings Group. State regulators list it as licensed (admitted) in Alaska, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Iowa, Idaho, Illinois, Kentucky, Massachusetts, Maryland, Minnesota, Missouri, Mississippi, North Carolina, North Dakota, Nebraska, New Jersey, Nevada, New York, Ohio, Oklahoma, Oregon, Rhode Island, South Carolina, Tennessee, Texas, Utah, Washington, Wisconsin, Wyoming. It ranked #52 of 98 in California homeowners in 2025 (0.2% share). It ranked #54 of 135 in North Carolina homeowners in 2025 (0.2% share). It ranked #59 of 73 in California flood in 2025 (0.0% share).
By Sam Alishahi, independent insurance broker · All companies
Where it's licensed
States whose regulator lists are loaded: Alaska, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Iowa, Idaho, Illinois, Kentucky, Massachusetts, Maryland, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Jersey, Nevada, New York, Ohio, Oklahoma, Oregon, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Washington, Wisconsin, West Virginia, Wyoming. Not on the lists we have for Montana, South Dakota, West Virginia, which doesn't by itself mean it isn't licensed there.
| State | Status | Lines licensed | Since | Source |
|---|---|---|---|---|
| Alaska | Admitted (licensed) | — | — | Alaska, 2026-10-18 |
| California | Admitted (licensed) | Earthquake, Flood, Homeowners, Inland marine, General liability | — | California Department of Insurance, 2026-10-17 |
| Colorado | Admitted (licensed) | Crime (burglary and theft), Earthquake, Homeowners, Inland marine, General liability, Commercial property (fire and allied lines) | — | Colorado, 2026-10-18 |
| Connecticut | Admitted (licensed) | — | — | Connecticut, 2026-10-18 |
| Delaware | Admitted (licensed) | — | — | Delaware, 2026-10-18 |
| Florida | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP), Fidelity bonds, Homeowners, Inland marine, General liability, Ocean marine, Commercial property (fire and allied lines), Surety bonds | — | Florida Office of Insurance Regulation, 2026-10-18 |
| Georgia | Admitted (licensed) | General liability, Commercial property (fire and allied lines), Surety bonds, Workers' compensation | — | Georgia, 2026-10-18 |
| Hawaii | Admitted (licensed) | — | — | Hawaii, 2026-10-18 |
| Idaho | Admitted (licensed) | Fidelity bonds, General liability, Ocean marine, Commercial property (fire and allied lines), Surety bonds, Workers' compensation | — | Idaho, 2026-10-18 |
| Illinois | Admitted (licensed) | Crime (burglary and theft), Earthquake, Flood, Homeowners, Inland marine, General liability, Commercial property (fire and allied lines) | — | Illinois, 2026-10-18 |
| Iowa | Admitted (licensed) | — | — | Iowa, 2026-10-18 |
| Kentucky | Admitted (licensed) | — | — | Kentucky Department of Insurance, 2026-10-17 |
| Maryland | Admitted (licensed) | — | — | Maryland Insurance Administration, 2026-10-17 |
| Massachusetts | Admitted (licensed) | Personal auto, Fidelity bonds, General liability, Surety bonds | — | Massachusetts, 2026-10-18 |
| Minnesota | Admitted (licensed) | — | — | Minnesota, 2026-10-18 |
| Mississippi | Admitted (licensed) | Aircraft and aviation, Personal auto, Farm and crop, Fidelity bonds, Homeowners, Inland marine, General liability, Ocean marine, Commercial property (fire and allied lines), Surety bonds, Workers' compensation | 08-01-1990 | Mississippi Insurance Department, 2026-10-17 |
| Missouri | Admitted (licensed) | — | — | Missouri, 2026-10-18 |
| Nebraska | Admitted (licensed) | — | — | Nebraska, 2026-10-18 |
| Nevada | Admitted (licensed) | General liability, Ocean marine, Commercial property (fire and allied lines), Surety bonds | — | Nevada Division of Insurance, 2026-10-17 |
| New Jersey | Admitted (licensed) | — | — | New Jersey, 2026-10-18 |
| New York | Admitted (licensed) | — | — | Excess Line Association of New York (DFS-licensed and eligible excess line insurers), 2026-10-17 |
| North Carolina | Admitted (licensed) | Earthquake, Flood, Homeowners, Inland marine, General liability | — | North Carolina, 2026-10-18 |
| North Dakota | Admitted (licensed) | — | — | North Dakota, 2026-10-18 |
| Ohio | Admitted (licensed) | — | — | Ohio Department of Insurance, 2026-10-17 |
| Oklahoma | Admitted (licensed) | — | — | Oklahoma, 2026-10-18 |
| Oregon | Admitted (licensed) | Personal auto, Earthquake, Flood, Homeowners, Inland marine, General liability, Commercial property (fire and allied lines) | — | Oregon, 2026-10-18 |
| Rhode Island | Admitted (licensed) | — | — | Rhode Island, 2026-10-18 |
| South Carolina | Admitted (licensed) | — | — | South Carolina, 2026-10-18 |
| Tennessee | Admitted (licensed) | — | — | Tennessee, 2026-10-18 |
| Texas | Admitted (licensed) | Personal auto, Credit, Fidelity bonds, Homeowners, Inland marine, General liability, Ocean marine, Commercial property (fire and allied lines), Surety bonds | 1978/10/30 | Texas Department of Insurance, 2026-10-17 |
| Utah | Admitted (licensed) | — | — | Utah, 2026-10-18 |
| Washington | Admitted (licensed) | — | — | Washington Office of the Insurance Commissioner and the Surplus Line Association of Washington, 2026-10-17 |
| Wisconsin | Admitted (licensed) | Homeowners, General liability, Commercial property (fire and allied lines) | — | Wisconsin, 2026-10-18 |
| Wyoming | Admitted (licensed) | — | — | Wyoming, 2026-10-18 |
Method and source
Each row comes from the named regulator's public company list on the date shown, joined by NAIC number. "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 or guaranty fund protection. Premium and rank come from state market share reports that list every company. This is a public-records directory, not a rating or recommendation; for the company's own filings use the NAIC's Consumer Information Source.
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