Anushka Figueroa recently decided to make a change. She gave up her life in California's Silicon Valley and headed to Phoenix to work in marketing. The 37-year-old, originally from Puerto Rico, said she was searching for a better quality of life. Her new home, she says, offers all the benefits that California did when her family moved there in the '70s. "California became too expensive," she said, "and Phoenix has advanced dramatically. It is the best decision I have ever made, and I would not go back." An influx of Hispanics such as Figueroa has reshaped many urban areas' demographics;...