According to the most recent data on the cost of living, DeKalb has an overall cost of living index of 94 which is 0.9x lower than the national index of 100.
Compared to only Illinois, DeKalb has a cost of living index that's 1.0x lower than Illinois's index of 98.
The standard of living in DeKalb ranks as #2,290 most affordable out of the 6,418 places we measured in Illinois. By definition, that implies DeKalb ranks as the #4,129 most expensive place in the Prairie State.
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Housing swings affordability the most between places in Illinois, so we broke down the statistics around housing costs into more detail. It's also important to consider median household incomes to make apples-to-apples comparisons across locations.
Home and income come data comes from the most recent US Census ACS 2014-2018.