The district's population dropped by 27% in the 1950s, and by 20% in both the 1970s and 1980s, due to outward migration for suburbanization and because of people leaving the area due to loss of jobs. In redistricting after the 1990 U.S. Census, the district was extended into the suburbs for the first time in 90 years. Chicago is home to 70% of the district's residents (down from 90% in the 1990s), although roughly 60% of the district's area is outside the city border. The district's white population (almost 30% of its residents) is concentrated in the suburban areas and in a few Chicago neighborhoods such as Hyde Park. The district's largest white ethnic groups are Irish (7.1%), German (6.2%), Polish (4.5%) and Italian (3.2%), mirroring the demographics of the neighboring third and thirteenth Congressional Districts. There are also sizable Dutch, Swedish, Czech, Palestinian, Greek and Lithuanian populations in the area of Oak Forest, Orland Park and Tinley Park, the district's three largest suburbs.