Boom in residential

construction and

growing professional class

Southwest

Percentage of residents in each income class

18.5

42.4

6.6

32.5%

100%

50%

0

Boom in residential

construction and

growing professional class

Southwest

Percentage of residents in each income class

18.5

6.6

42.4

32.5%

0

50%

100%

Southwest

Percentage of residents

in each income class

42.4

32.5%

18.5

6.6

100%

50%

0

50%

0

Blue collar area

Percentage of residents in each income class

19%

45.1

29.1

6.1

100%

50%

0

Blue collar area

Percentage of residents in each income class

45.1

19%

29.1

6.1

50%

100%

0

Percentage of residents

in each income class

6.1

29.1

19%

45.1

50%

0

100%

50%

100%

0

Upper Northeast

Traditionally well off

Percentage of residents in each income class

16.2%

43.3

36.3

4.2

100%

50%

0

Upper Northeast

Traditionally well off

Percentage of residents in each income class

43.3

36.3

16.2%

4.2

100%

50%

0

Chestnut Hill

Percentage of residents

in each income class

4.2

36.3

16.2%

43.3

50%

0

100%

In 1970 Philadelphia’s median income distribution was relatively flat, with two notable exceptions: traditionally well-off Chestnut Hill and the Upper Northeast.

By 1990, a drop in manufacturing, white flight and other factors were fueling declines in Lower Northeast and other blue-collar neighborhoods.

As of 2014, an incentive-driven residential building boom and an influx of professionals had liftedand nearby areas to new levels of prosperity, while declines continued in parts of theand in the, a traditional industrial center.