Where are Ona and Jurgis living and working throughout the novel The Jungle?

Most of the novel takes place in the Stockyards of the
South Side of Chicago.  Packingtown is where Jurgis and Ona live.  The financial
challenge is evident in that they are not the only ones who endure such hardship. 
Everyone in this setting is challenged economically and struggles to make their American
Dreams a reality.  Packingtown is near the meat packing factories where work is
dehumanizing and degrading.

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Even though these packinghouses and their
particular methods are gone, the drive to get employees to do more work for less money
still exists, as does the practice of handling merchandise, whether it is meat or
information, as expediently as the law allows. By symbolically linking the fates of the
immigrants with the treatment of the butchered food products, the book establishes a
nearly perfect link between setting and theme, which, even more than the sheer mass of
gruesome details, accounts for the impact of the stockyard setting upon the minds of
readers throughout the
decades. 

In this light, one
can see the setting of where Jurgis and Ona live have thematic applications in
Sinclair's work.