Population: Wikipedia (List of United States cities by population); median home price: Redfin/Zillow market data; state income tax: Tax Foundation, 2026.
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2,731,585 people call Chicago home. That scale — a population over a million — is the starting point for most of the financial decisions covered below, from which banks compete locally to how tight the housing market runs. At 5.0%, Illinois's top income tax bracket is comparatively light, which keeps more of a Chicago paycheck available for savings and debt payoff.
Housing in Chicago — roughly $420,000 at the median — lands near the national average, which makes it a reasonably representative market for mortgage comparisons. What follows is Chicago-specific: local banks, local tax rules, and local real estate data, not a copy-paste of national advice.