Texas coastal retirement markets: storm history, windstorm status, island health care and second homes

Summary

The Texas coast is not one retirement market. A buyer in Galveston faces a seawall, a university hospital and a bay behind the island. A buyer in Corpus Christi is in a large city on the Coastal Bend, where a hurricane that came ashore about 30 miles away in 2017 left comparatively minor damage. A buyer in Rockport is in a town that took a direct hit from the same storm's eyewall. A buyer in Port Aransas or South Padre Island is on a barrier island with a long recorded history of surge. The common thread is exposure, and the differences are in how that exposure shows up in storm history, in insurance, in emergency care and in who owns the homes.

This guide sets out what the official pages say about each of those, market by market. It uses the National Hurricane Center (NHC) and National Weather Service (NWS) accounts of storms, the Texas Windstorm Insurance Association (TWIA) list of designated counties, city emergency-services pages, hospital-system pages and Census Bureau survey tables. It quotes no insurance premiums, because premiums depend on the insurer, the roof, the elevation and the address, and no dated, defensible figure is available for the five markets. It also does not repeat how windstorm, flood and homeowners policies work; for that mechanics, including TWIA eligibility, the certificate of compliance and the 30-day flood waiting period, see the guide to Gulf Coast hurricane, windstorm and flood insurance.

Two other coastal communities, Texas City and League City, are not covered because no place page treats them as markets here. The difference between a freestanding emergency room and an inpatient hospital, which matters on Rockport's coast and on both barrier islands, is explained in the guide to healthcare geography and Medicare. For the inland lake markets, see the companion guide to lake retirement markets.

Key takeaways

• TWIA's page lists 14 first-tier coastal counties as its designated area, and Galveston, Rockport, Port Aransas, South Padre Island and Corpus Christi all fall in listed counties. Designation by county says where a TWIA policy may be available, not what a house costs to insure.
• One storm can produce different outcomes within 30 miles. Hurricane Harvey in 2017 was a direct eyewall hit on Rockport and Fulton and left Corpus Christi with widespread but mostly minor damage, according to the NWS and NHC. Evaluate a specific address, not a city name.
• Barrier-island health care depends on the mainland. Port Aransas and South Padre Island have their own emergency medical services, but their city pages send patients to hospitals in Corpus Christi or on the mainland, and Rockport's local anchor is a freestanding emergency room. Galveston has a Level 1 trauma center on the island.
• Vacancy figures signal second-home use: the Census Bureau estimates 74.1 percent of housing units on South Padre Island and 70.7 percent in Port Aransas are vacant, against 12.6 percent in Corpus Christi. The homestead exemption applies to a principal residence only.
• Wind and flood are separate policies on the coast, and flood coverage is separate from the base homeowners policy. Quote both for the exact address before an offer, and see the Gulf Coast insurance guide for how TWIA and the NFIP work.

Which of these markets sit in TWIA's designated counties

TWIA's coverage and eligibility page says a property must be in the area designated by the Commissioner of Insurance, which it describes as currently including all 14 first-tier coastal counties and parts of Harris County east of Highway 146. It names the 14 counties: Aransas, Brazoria, Calhoun, Cameron, Chambers, Galveston, Jefferson, Kenedy, Kleberg, Matagorda, Nueces, Refugio, San Patricio and Willacy. By that list, Galveston is in Galveston County, Rockport in Aransas County, Port Aransas in Nueces County and South Padre Island in Cameron County, and all four are in the designated area. Corpus Christi is a larger case: the Census Bureau's place file lists the city across Aransas, Kleberg, Nueces and San Patricio Counties, and all four appear on TWIA's list.

Designation is by county, and it says where a TWIA policy may be available, not what a given house will cost or whether a private insurer will write it. The Texas Department of Insurance (TDI) states that anywhere in Texas except along the coast a homeowner probably has wind and hail coverage in a homeowners policy, and that along the coast a homeowners policy might not cover wind and hail, so a separate windstorm policy may be needed. TDI adds that windstorm insurance is not required by law, but a lender will likely require it near the coast. Flood is a third policy: FEMA states that most homeowners insurance does not cover flood damage and that flood insurance is a separate policy. A coastal buyer therefore plans for two coverages beyond the base policy, and the cost of each depends on parcel facts such as elevation, roof age and the windstorm certificate.

Galveston's flood questions are specific to the island. The City of Galveston's flood protection page says it advises everyone to carry flood insurance regardless of flood zone, that its effective flood insurance rate map is dated August 15, 2019, and that it participates in the Community Rating System, a federal program that rewards communities for higher floodplain standards with flood insurance discounts. A buyer can ask the city's development services department which flood zone a specific address is in, and should compare the height of the lowest floor with the base flood elevation.

What the storm record says, place by place

Galveston's formative storm is the hurricane of September 8, 1900. The City of Galveston's Seawall Boulevard plan records winds over 120 mph and a tidal surge as high as 15.7 feet, more than 6,000 deaths and the destruction of one-third of the city's buildings. The city responded by raising its grade and building a seawall that now spans more than ten miles, with the ground inland of Seawall Boulevard sloped 4 or 5 feet higher. The seawall protects the Gulf side. Hurricane Ike in 2008 showed that bay-side surge and island drainage are separate exposures: the NWS Houston/Galveston office says Ike made landfall at the upper end of Category 2 intensity, was just under the wind criteria for a major hurricane, and produced the greatest storm surge along the Texas coast since Hurricane Carla in 1961, with an estimated $19.3 billion in damage. The city's flood page says Ike flooded homes through downstairs enclosures and that Hurricane Harvey in 2017 flooded the Strand when water backed up in the streets.

Hurricane Harvey, which made landfall on August 25, 2017 as a Category 4 hurricane, is the recent test for the Coastal Bend. The NWS in Corpus Christi calls it the first major hurricane to strike the middle Texas coast since Celia in 1970. The NHC's report puts the center's landfall on the northern end of San Jose Island about 5 nautical miles east of Rockport, with sustained winds of 115 knots, and records the highest observed gust, 126 knots, near Rockport. The NWS says Rockport and Fulton took a direct hit from the eyewall, with roofs blown off, walls collapsed and electricity and water services lost. The NHC estimates that approximately 15,000 homes were destroyed and 25,000 damaged in Aransas, Nueces, Refugio and eastern San Patricio Counties, that damage was most severe near Aransas and Copano Bays, and that Rockport was hit particularly hard. It records surge flooding of 4 to 7 feet above ground level in Copano Bay and 6 to 10 feet in the back bays between Port Aransas and Matagorda.

Port Aransas, on Mustang Island, was also affected by the same storm. The NHC reports a tide-gauge reading of 5.3 feet above mean higher high water at Port Aransas and a surveyed high-water mark of 6.4 feet above ground level near the city, and the NWS says surge in Port Aransas was at least 6 feet. The NHC says State Highway 361 was inundated along the entire stretch of Mustang Island, that surge damaged or destroyed many coastal structures in Port Aransas, and that erosion near Packery Channel interrupted the primary water supply to Port Aransas for six days. Corpus Christi, by contrast, was spared the worst, with widespread but mostly minor damage; the NWS places the eye about 30 miles northeast of the city, the NHC estimates generally 1 to 3 feet of flooding in Corpus Christi Bay because of offshore winds on Harvey's west side, and roughly 220,000 customers lost power at the peak. The lesson is that one storm produced a direct hit in Rockport and minor damage in Corpus Christi, and a different track would change the result.

South Padre Island's published history comes from the NWS Brownsville office. It records a 13-foot surge in September 1933 that leveled all dunes on the island and produced more than 40 separate cuts, an estimated storm tide of 8 to 14 feet on South Padre Island, Port Isabel and Boca Chica in Hurricane Beulah in 1967, a notable surge that flooded the island in Hurricane Gilbert in 1988, and severe beach erosion from Hurricane Ike in 2008. The same office says most communities on the Lower Texas Coast are below 10 feet in elevation, that a storm tide in a large cyclone can raise the mean water level 15 feet or more, and that a computer simulation of a large, slow hurricane landing near the mouth of the Rio Grande shows the Town of South Padre Island completely inundated. It adds that a structure with breakaway ground floors or one elevated well above the sand can protect against minor to moderate surge, but that for a surge comparable to Ike or Katrina all bets are off.

Islands and mainland shores: the evacuation and access question

The NHC states that storm surge is currently the leading cause of fatalities from hurricanes, and that is the reason evacuation matters more to a barrier-island retiree than the strength category of the next storm. On South Padre Island, the town's emergency pages state that the mayor will declare an emergency evacuation and that a mandatory evacuation will be announced through the media, the town website or the 1-800-OKPADRE number. The town runs an emergency notification system that residents can join voluntarily, and a registry for people with access and functional needs. A resident who cannot drive, or who depends on powered medical equipment, should plan the departure well before a mandatory order, because the NWS notes that most of the Lower Texas Coast is low.

Galveston's home page links an alert system called Island Alert, and Port Aransas sits on Mustang Island, where the NHC's Harvey report says State Highway 361 was inundated along the entire stretch of the island. That is the kind of fact that bears directly on whether a medical trip is possible in the hours after a storm. These are access facts, not insurance facts, and they belong in the decision alongside the windstorm certificate and the flood zone. Rockport and Corpus Christi are on the mainland shore, but the surge flooding recorded in Copano Bay and Corpus Christi Bay shows that low shoreline areas flood there as well.

Water and utilities can fail for reasons other than flood. Harvey interrupted Port Aransas's primary water supply for six days, and the NWS says Rockport lost electricity and water services. Corpus Christi's own Securing Water site refers to a current Stage 1 drought status and describes diversifying supply across groundwater, reclaimed water and seawater desalination, so the city's long-term water supply is a separate question from storm preparedness. See the guide to hail, wildfire, drought, heat and power outages for statewide context on outages.

Health care on an island or at the end of a bay

Galveston is the exception. UTMB Health's Galveston campus is anchored by John Sealy Hospital, and UTMB says its emergency department is staffed 24/7 and is a Level 1 trauma center for nine counties. The Census Bureau's 2019-2023 survey estimates that 20.1 percent of Galveston residents are 65 or older. A university hospital on the island is a real advantage, but it is on the same island as the exposure, so patients with continuing treatment should ask their providers how care is handled before and after a major storm.

Corpus Christi has the Coastal Bend's large hospital campuses. CHRISTUS Spohn Hospital Corpus Christi - Shoreline describes itself as the largest acute care facility in the region, with a Level I Stroke Center and a Level II Trauma Center. The smaller coastal towns depend on Corpus Christi hospitals. Rockport's medical anchor is ER 24/7 Rockport at 400 Enterprise Boulevard, which describes itself as a department of Corpus Christi Medical Center and a freestanding emergency room open 24 hours, with on-site lab testing and imaging, Medicare accepted, and direct admission by ambulance to the system's other network hospitals. A freestanding emergency room stabilizes and transfers; inpatient care, surgery and most specialists are elsewhere in the Coastal Bend.

Port Aransas runs its own emergency medical service. The city says its station is available 24 hours a day, seven days a week, with two ambulances staffed around the clock, and that the service averages approximately 1300 responses per year. Its Local Hospitals page lists six hospitals, all in Corpus Christi: Bay Area Hospital, Spohn Memorial Medical Center, Driscoll Children's Hospital, Doctors Regional Hospital, Spohn Shoreline Hospital and Spohn South Hospital. South Padre Island's fire department provides emergency medical service with 4 advanced life support units responding around the clock, an average response time of less than four minutes to any location in the town and 1,901 EMS calls in 2019, and its page says patients are transported to one of the many hospitals on the mainland for continued care. Neither city names a hospital on the island, and neither page gives a hospital travel time, so a household should find out which mainland hospital its physicians and Medicare plan favor and test the trip, including in an evacuation or a road closure.

Vacancy, second homes and age profile

The Census Bureau's 2019-2023 American Community Survey estimates show how different the five markets are. In Galveston, 29.8 percent of 34,921 housing units are vacant and 46.7 percent of occupied units are owner-occupied. In Corpus Christi, 12.6 percent of 134,981 housing units are vacant. In Rockport, 23.4 percent of 6,816 housing units are vacant and 28.9 percent of residents are 65 or older. In Port Aransas, 70.7 percent of 5,125 housing units are vacant and 32.2 percent of residents are 65 or older. In South Padre Island, 74.1 percent of 5,843 housing units are vacant, 33.4 percent of residents are 65 or older and the median age is 59.0.

The survey does not say why a unit is vacant. A high share typically reflects second homes, vacation rentals and units out of service, but the figures are signals, not counts. They still shape a retirement purchase. On a barrier island where most homes are not anyone's year-round residence, the neighbors who could check on a house or share a ride off the island may be absent for much of the year. Both cities link short-term rental information from their home pages: Port Aransas lists short-term rental registration and South Padre Island lists short-term rentals and the hotel occupancy tax, so the rules for renting a property part of the year differ by city.

A second home also does not receive the same property-tax treatment as a principal residence. The Texas Comptroller states that the general residence homestead exemption requires an ownership interest and use of the property as the individual's principal residence. A part-time owner on the coast should not assume that a school-tax exemption or a ceiling applies, as the guides to homestead and age-65 exemptions and property taxes and appraisal districts explain.

In Rockport the vacancy figure has another context. The NHC's Harvey report states that approximately 15,000 homes were destroyed and 25,000 damaged in the counties around the landfall, so much of the town's housing stock has been rebuilt or repaired since 2017. A buyer should ask for the year of construction or rebuild, the windstorm certificate of compliance and its coverage of the roof and any additions, and the flood zone.

Questions to ask about a coastal address

Ask which flood zone the parcel is in under the effective map and what the lowest floor elevation is relative to base flood elevation. Ask whether the home has a windstorm certificate and when the roof was last replaced. Ask whether the property is in a city that keeps its own evacuation and alert system, and how the town announces a mandatory order. Ask which hospital your physicians use and whether it is in your Medicare plan's network, and how you would reach it if the road off the island were closed. Ask the neighbors and the association how many homes are occupied in winter and in summer.

Finally, treat any single storm as a sample. Harvey left Corpus Christi with comparatively minor damage and Rockport with extreme damage; Ike produced the largest Texas surge since 1961 at a Category 2 intensity; and South Padre Island's published history includes a 13-foot surge in 1933. The records support planning for several kinds of events at once, and a retirement budget for the coast should include separate, quoted coverage for wind and for flood.

Places where this matters most

• GalvestonA Gulf barrier island city with a university medical campus, a seawall, a high share of vacant housing units, and a retirement decision dominated by separate windstorm and flood insurance, parcel elevation and hurricane exposure.
• Corpus ChristiThe largest city on the Texas Coastal Bend, centered in Nueces County, with the area's principal hospital campuses, a city-operated international airport, Gulf and bay shoreline, a county-wide windstorm-insurance designation, and a multi-year water-supply drought that the city reports in published restriction stages.
• RockportA small Aransas County bay-side city, closely tied to neighboring Fulton, with one of the oldest age profiles in the Coastal Bend, a freestanding emergency room as its local medical anchor, a county-wide windstorm-insurance designation, and a recent history of direct hurricane impact.
• Port AransasA small Nueces County resort city on a Gulf barrier island with one of the highest shares of residents aged 65 and over in the Coastal Bend, a very high share of vacant (second-home and rental) housing, city-run 24-hour emergency medical services, hospital care on the mainland in Corpus Christi, and direct exposure to Gulf storm surge.
• South Padre IslandA small Cameron County resort town on a Gulf barrier island with an older resident population, a housing stock that is mostly not occupied year-round, a tourism-based economy, no hospital described on the island itself, and direct exposure to hurricane storm surge and the Texas Windstorm Insurance Association's coastal insurance system.

Related guides

• Texas Gulf Coast hurricane, windstorm and flood insurance
• Texas healthcare geography and Medicare network considerations
• Texas hail, wildfire, drought, heat and power outages: the inland hazards
• Texas lake retirement markets: water levels, flood and drought exposure, and private versus public lakes