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Welcome to Chicago ...
The pronunciation of Chicago: shi-KAW-goh<2>
While we don't have a date for the founding of Chicago, you might consider that their post office opened in 1846.
The city was incorporated March 4, 1837.
When the people of Chicago refer to themselves (known as a demonym), they frequently use Chicagoan<3>
From the Census Estimates for 2019, Chicago has a population of 2,691,497 people<4> (see below for details).
Chicago is 590 feet [180 m] above sea level.<5>.
Time Zone: Chicago lies in the Central Time Zone (CST/CDT) and observes daylight saving time
Note: If you travel east from Chicago (for example, toward New Carlisle (IN)), you will leave Central Time and cross into the Eastern Time Zone (EST/EDT).
Chicago is served by one (or more) of the following area codes: (312), (773) and (872).
The ZIP codes for Chicago: 60601-60626, 60628-60634, 60636-60641, 60643-60647, 60649, 60651-60657, 60659-60661, 60663-60665, 60667-60675, 60677-60681, 60683-60685, 60687, 60690-60691, 60693-60694, 60697, 60699, 60701<6>
Websites for Chicago ...
Official Website: www.cityofchicago.org/
Chamber of Commerce: www.chicagolandchamber.org/
Junior League: www.jlchicago.org/
Population Details ...
Taken from the 2019 Census Estimates, Chicago had an population of 2,691,497 people. This is a decrease of 0.15% since the 2010 Census (or a decrease of 7.06% since the 2000 Census).
At the time of the 2010 Census, Chicago had a population of 2,695,598 people (or 51.89% of the total population of Cook County). This makes Chicago the county's most populous community.
The population of Chicago represents 21.01% of the total population of Illinois (which has 12,830,632 people), making it the state's most populous community.
With a 2010 count of 2,695,598 people, the population of Chicago decreased 6.92% from the 2000 Census (with a count of 2,896,016 people).
More information can be found on the Census Page for Chicago.
Communities Also Named Chicago ...
Using our Gazetteer, we found that there are 9 communities that are also named Chicago - they are located in California, Kansas (2), Kentucky, Nebraska, New York, Ohio, Texas and Wisconsin.
For more information, see our Tidbits & Trivia Page for Chicago.
Communities near Chicago ...
We have created a list of 10 communities that are near Chicago.
To Help With Your Genealogy Research ...
We have a couple of sections for those tracing their genealogy.
We created a list of cemeteries that are in the area around Chicago. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Chicago.
Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Chicago. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around Chicago.
We also have a detailed list of newspapers that have been published in the area around Chicago. Our list includes 1,504 papers. See our Newspapers Page for Chicago.
TripAdvisor Tourism Pages for Chicago ...
Looking for more information about Chicago? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.
In addition to the Tourism page for Chicago, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Chicago.
Adding Chicago to Our Gazetteer ...
We originally found mention of Chicago in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.
From our notes, the earliest published mention we've found for Chicago was in the book titled U.S. Post Offices (Oct. 1846).
We also found Chicago in the book titled Table of U.S. Post Offices in the United States (Jan. 1851).
For more details, see References and Mentions for Chicago.
Off-the-Road Links ...
The official website for Chicago: www.cityofchicago.org/
The official website for Cook County: www.co.cook.il.us/
The official website for State of Illinois: https://illinois.gov
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This page was last modified/updated: 21 Nov 2023