Curious City digs deep to answer one curious citizen’s question about Chicagoans’ roots: How many of them were actually born in the city? Census data lend clues. Then we get insight into the multi-generational experience in the Chicago area - directly from one family whose descendants arrived here in the late 1800s. Editor's note: Representatives of the Ozinga family are profiled in the accompanying podcast episode. At the time of this story's release, the family-owned construction company was not an underwriter of WBEZ's Curious City series, but it became for a short time thereafter.