It's been 20 years since Hurricane Katrina made landfall on the Gulf Coast. With the storm destroying many homes and businesses, some people never came back.

New Orleans

Two decades after Hurricane Katrina struck the Gulf Coast, new data reveals significant and lasting population shifts among those displaced by the disaster. According to Census Bureau estimates, 1.5 million people evacuated from Louisiana, Mississippi, and Alabama, with over a third never returning to their original homes and more than a quarter not returning to their counties of residence.

A collaborative study by Brown University, the Census Bureau, and the University of Michigan found that displaced New Orleans residents initially spread to over 600 locations nationwide. Over time, cities like Houston and Dallas saw increases in former New Orleans residents, while Baton Rouge and Atlanta, which initially received many evacuees, saw declines. Researchers attribute these trends to factors such as family connections and job opportunities, noting the complexity of individual relocation decisions.

Looking at population shifts post-Hurricane Katrina

As we have been covering throughout our newscast, it has been 20 years since Hurricane Katrina made landfall on the Gulf Coast. And with the storm destroying so many homes and businesses, many never came back. We wanted to look at who some of the displaced Katrina residents were and also highlight some new data on where they might have gone. An estimated 1.5 million people, 16 years or older, evacuated from Louisiana, Mississippi, and Alabama, according to the Census Bureau. An estimated 35% of those who evacuated never returned to the houses they were living in before Katrina, and 28% never returned to the counties, let alone the houses they were living in before the storm. Look at the city of New Orleans, for example. Its population before Hurricane Katrina was approximately 494,000 people. Almost a year after the storm, that population had dropped by more than a quarter of a million people. And now, today even, the city's population remains at only 74% of what it was before Katrina. A new study by researchers at Brown University, the Census Bureau, and the University of Michigan tracked New Orleans residents who did not come back, and it measured where they were a year after the storm and for the 13 years that followed. Researchers found that in 2006, the population dispersed to more than 600 locations across the United States. Some major metro areas in particular attracted a large number of those displaced residents from New Orleans, including Baton Rouge, Atlanta, Houston, and Dallas. By 2019, though, researchers, they noted a significant shift in where pre-Katrina New Orleans residents were living. That research found 20% of them in Houston compared to 12% in 2006. A similar story also for Dallas, which saw its population of displaced people from New Orleans double. That was between 2006 and 2019. Meanwhile, Baton Rouge and Atlanta, which had the largest number of New Orleans residents in 2006, they both lost a significant percentage of that population 13 years later. One of the study's authors, Brown University professor Elizabeth Fussell, told CBS News that family connections and job opportunities were among the most likely reasons of why so many displaced New Orleans residents lived in Texas back in 2019 compared to Atlanta or Baton Rouge. Overall, though, she noted, quote, there are probably as many reasons as there were people who were moving after Katrina.

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