The Indianapolis area is seeing its biggest population shift since the “white flight” to the suburbs 40 years ago, according to an IUPUI study. The school’s Polis Center says Hoosiers followed the national trend in the ’70s in leaving the city for open spaces at the start of their development. Now, there’s a tide of younger, higher-income, better-educated residents who want to live in a city center, with a mix of restaurants and retail nearby. Research analyst Matt Nowlin says the reverse migration isn’t enough to offset those who left in the ’70s.