Galveston County Insurance: Surge on Both Sides of Island

A seawall on the Gulf side, a bay on the other

Galveston Island's highest natural ground in 1900 stood under nine feet above the sea. The city's response to that fact still defines the county: a concrete seawall that now runs more than ten miles along the Gulf shore and rises 17 feet, and behind it a grade raising that lifted the city itself, in places by as much as 17 feet, building by building. The wall changed the direction of the risk rather than ending it. Hurricane Ike demonstrated the modern shape of it in 2008: the seawall side held back the direct Gulf surge while water rose from Galveston Bay over the island's unprotected north side. The Bolivar Peninsula, reached by the SH 87 ferry or the long way around the bay, has no seawall at all, and the mainland tier adds a third geography, the industrial shoreline of Texas City.

Galveston County is one of the 14 first-tier coastal counties in TWIA's designated catastrophe area, the whole county. A qualifying owner applies to the Texas Windstorm Insurance Association with a denial from at least one authorized insurer actively writing wind and hail in the designated area, and the structure needs its windstorm certificate of compliance, the WPI-8 or WPI-8-E, from the Texas Department of Insurance. TWIA covers wind and hail only. Properties in the federal coastal barrier areas face an additional permit-history test for eligibility. Flood and surge belong to a flood policy, and the rest of the homeowners policy stays separate. No Harris County address test applies anywhere in this county.

September 8, 1900, and the storm that rebuilt the map

The National Oceanic and Atmospheric Administration's account of the 1900 hurricane records a storm surge of more than 15 feet across the island. NOAA counts at least 8,000 people dead and more than 3,600 buildings destroyed; the National Park Service puts deaths in the city between 6,000 and 8,000, with island-wide estimates running higher. Every figure in that sentence is a historical estimate, labeled as such because no exact count was ever possible. The modern event is Ike: the National Hurricane Center's report records landfall on the upper Texas coast on September 13, 2008 at the upper end of Category 2, with almost every structure in parts of the Bolivar Peninsula, Crystal Beach, Gilchrist, and High Island, razed from its foundations by surge and waves. The county's federal record since 2000 counts 22 declarations, fifteen of them hurricane declarations.

The wind policy, the flood policy, and the house raised on blocks

Coverage here is a stack of three. The TWIA policy, where the private market will not write wind, carries wind and hail. The homeowners policy carries fire, theft, and liability. The flood policy carries surge and rising water, from either side of the island. Percentage deductibles ride on the wind side: where a wind policy carries a 2 percent deductible on a $350,000 home, the deductible is $7,000 in cash before the policy responds to a storm claim. The elevation facts matter at purchase: homes in a Special Flood Hazard Area with a federally backed mortgage must carry flood insurance, a new flood policy normally waits 30 days before it covers with a narrow exception at a loan closing, and a structure's windstorm certificate is a document to ask for before closing, not after a storm.

The car rides a ferry, and the ferry stops for weather

The county's 23 ZIP codes include a peninsula whose only road out runs through the county or across a ferry landing that suspends service in high water and wind. Texas requires liability limits of at least 30/60/25: $30,000 per injured person, $60,000 per accident, and $25,000 for property damage. Comprehensive coverage is the line that pays when your own vehicle takes surge water or storm debris, and on the peninsula a car is not a convenience, it is the evacuation. Personal injury protection and uninsured motorist coverage must be offered in Texas and stand unless rejected in writing.

Hospitals on the island, plants on the mainland

The county works in two economies. The University of Texas Medical Branch is the island's anchor: UTMB's own FY2025 data card counts 16,567 personnel across its enterprise, and its Galveston campus hospital runs 777 beds. On the mainland, Texas City's refinery and chemical complex carries its own memory: on April 16, 1947, the ship Grandcamp, loaded with about 2,300 tons of ammonium nitrate, caught fire and exploded at the docks. The Texas State Historical Association's account records 581 people killed, as recorded by the Red Cross and the Department of Public Safety, including 26 Texas City firemen in the first explosion. Group coverage in both economies, university and plant, starts and ends on the employer's schedule; plant turnarounds and hospital hiring cycles churn this county's coverage files in waves.

Medicare in a county of hospitals

CMS counts 70,861 Medicare-eligible residents in Galveston County in its September 2026 release, with 56.12 percent enrolled in Medicare Advantage. With a major academic medical center on the island, the network question here is unusually concrete: whether a given plan's network runs through UTMB or around it. Free, unbiased counseling is available from the Houston-Galveston Area Agency on Aging: 713-627-3200 or 800-437-7396. The statewide HICAP line is 800-252-9240.

Communities and ZIP codes in Galveston County

Bacliff, Dickinson, Friendswood, Galveston, Gilchrist, High Island, Hitchcock, Kemah, La Marque, League City, Port Bolivar, Santa Fe, Texas City.

77510 · 77517 · 77518 · 77539 · 77546 · 77549 · 77550 · 77551 · 77552 · 77553 · 77554 · 77555 · 77563 · 77565 · 77568 · 77573 · 77574 · 77590 · 77591 · 77592 · 77617 · 77623 · 77650