Cities located in the 312 Area Code

The most populous cities in area code 312 are: Chicago, Wheeling, Hinsdale, La Grange Park, and Northbrook.
Other cities in the 312 area code include: Roselle.
Reverse Phone Lookup in Chicago, IL

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About Chicago, Wheeling, and Hinsdale, Illinois

Chicago, officially the City of Chicago, is the third-most populous city in the United States. With over 2.7 million residents, it is the most populous city in the state of Illinois, and the Midwestern United States. It is the county seat of Cook County. The Chicago metropolitan area, often referred to as Chicagoland, has nearly 10 million people and is the third-largest in the U.S. Chicago is called the architecture capital of the United States. In terms of wealth and economy, Chicago is considered one of the most important business centers in the world. Chicago was incorporated as a city in 1837, near a portage between the Great Lakes and the Mississippi River watershed, and grew rapidly in the mid-nineteenth century. Positioned along Lake Michigan, the city is an international hub for finance, commerce, industry, technology, telecommunications, and transportation: O'Hare International Airport is the second- busiest airport in the world when measured by aircraft traffic ; the region also has the largest number of U.S. highways and rail road freight. In 2012, Chicago was listed as an alpha global city by the Globalization and World Cities Research Network, and ranked seventh in the world in the 2016 Global Cities Index. Chicago has the third-largest gross metropolitan product in the United States—about $640 billion according to 2015 estimates. The city has one of the world's largest and most diversified economies with no single industry employing more than 14% of the workforce. In 2016, Chicago hosted over 54 million domestic and international visitors, a new record making it one of the top visited cities in the nation. Landmarks in the city include Millennium Park, Navy Pier, the Magnificent Mile, Art Institute of Chicago, Museum Campus, the Willis (Sears) Tower, Museum of Science and Industry, and Lincoln Park Zoo. Chicago's culture includes the visual arts, novels, film, theater, especially improvisational comedy, and music, particularly jazz, blues, soul, hip hop, gospel and house music. There are many colleges and universities in the Chicago area; among these, Northwestern University, University of Chicago, and the University of Illinois at Chicago are classified as "highest research" doctoral universities. Chicago also has professional sports teams in each of the major professional leagues. The city has many nicknames, the best-known being the Windy City.

Wheeling is a village in Cook and Lake counties in the U.S. state of Illinois. A suburb of Chicago, it is primarily in Cook County. The population was 37,648 at the 2010 census. Wheeling is named for Wheeling, WV.

Hinsdale is a village in Cook and DuPage counties in the U.S. state of Illinois. Hinsdale is a western suburb of Chicago. The population was 16,816 at the 2010 census, most of whom lived in DuPage County. The town's ZIP code is 60521. It is listed in the top 1% of wealthiest towns in Illinois, and is known locally for its beautiful residences and teardown (referring to a process in which a real estate company or individual buys an existing home and then demolishes and replaces it with a new one) culture, of which new rebuilds have taken 30% of homes in the village. The town has a rolling, wooded topography, with a quaint downtown, and is a 22-minute express train ride to downtown Chicago on the Burlington Northern line.

What Time Zone is Area Code 312?

The 312 area code lies within the Central Daylight Time Zone (or CDT). The current time in Central Daylight Time is 6:03 PM on Jun 17, 2024.

Neighborhood Demographics

Statistics based on US Census data for Chicago
35 y/o
Median Age
$54.0K
Median Income
$247K
Median Home Value
2.79M
Total Population

Area Codes near Chicago, Wheeling, and Hinsdale, Illinois

Phone Number Prefixes in the 312 Area Code

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Phone Numbers in the 312 Area Code

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