I don't know how to compare w/California, but I can tell you that based on my experience and that of people I know, any of the major U. programs in Chicago are pretty competitive to get into, even for things like internal medicine. You can expect ER and general surg. to be even more competitive. If you are willing to consider any/all programs in Chicago (even the lesser known, etc.) that will give you more choices. I think anyone applying in uber-competitive cities like Boston, San Francisco, and Chicago should definitely have a backup plan and apply to programs in some geographically less competitive areas too.