Analysis: Native Iowans are 71% of state's population

About 15 percent of Iowa's population in 2012 came from Illinois, Ohio and other Midwestern states, according to a New York Times analysis of interstate migration data.

The majority of people living in Iowa — 71 percent — are natives. But neighboring Illinois contributes about 4 percent to the Hawkeye State's more than 3 million population.

Migration from Southern states has fallen off since the middle 1990s, while migration from Western states has nudged up to 4 percent of Iowa's population.

About 5 percent of people living in Iowa are foreign-born, a steady uptick since 1990.

While most Iowans are natives, the Times noted the share of Iowa's population born in the state is the lowest since 1920.

From the late 1950s through the middle 1970s, about 80 percent of those living in Iowa were born in the state.