Chicago

Yes, most cities have multiple ZIP codes. Large cities like New York City have over 200 ZIP codes, while Los Angeles has around 130. Even small towns may have two or three ZIP codes if they have distinct delivery areas or PO box sections.

Yes. Many ZIP codes span multiple cities, towns, or unincorporated areas. The USPS assigns ZIP codes based on delivery efficiency, not political boundaries. Rural ZIP codes especially may cover large areas containing several small communities.

You can find ZIP codes for any US city using ZipFYI's search tool or by browsing our city pages. The USPS Look Up a ZIP Code tool is also available at usps.com. Remember that cities may have multiple ZIP codes, so use a specific street address for the most accurate result.

The USPS maintains preferred city names that may differ from official municipal names. Some neighborhoods, communities, or census-designated places use the name of a larger nearby city as their mailing address. The USPS acceptable city names are based on historical mail delivery patterns.

City-level demographic data includes total population, median household income, median home value, housing units, population density, land area, commute times, and educational attainment. This data is derived from the US Census Bureau's American Community Survey (ACS).