312 Area Code Prefixes
312 Area Code Map and Stats

Top cities with a 312 Area Code

Where is the 312 Area Code?

The 312 Area Code (or Area Code 312) is located in the state of MO. Area Code 312 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 1 unique phone numbers and 9 individuals near the city of Saint Louis

Location & Map

Most numbers within Area Code 312 are located in the following cities: Saint Louis, Chicago, Northbrook, Wheeling, Streamwood, La Grange, Hinsdale, Ingleside, Detroit, Lake Forest, Lake Villa, Alsip, Homer Glen, Niles, Mansfield, Mason City, Lincolnwood.

Time Zone & Current Time

The 312 area code lies within the Central Standard Time (or CST). The current time in Central Standard Time is 11:13 PM on 03/06/2015.

Top Cities

Saint Louis, Chicago, Chicago, Chicago, Chicago, Chicago, Chicago, Chicago, Chicago, Northbrook, Chicago, Chicago, Chicago, Chicago, Wheeling, Chicago, Chicago, Chicago, and Chicago

Population Demographics

The 312 Area Code is one of the telephone area codes supported by Spokeo's Reverse Phone Lookup technology. Spokeo's reverse phone lookup functions much like a personal caller-ID system, and can identify the owner of virtually any phone number in the continental United States. Spokeo gathers hundreds of millions of listed phone records and potentially presents the owner's full name, address, email, photos, and any other information that may be associated with the record. Try searching for any 312 Area Code phone number today, and discover what Spokeo can do for you.


Saint Louis, MO
Neighborhood statistics for Saint Louis, MO
Avg. Property Value
Avg. Household Income
Top Occupations
40% Management
31% Sales
Average Age
56 years old
49% Female
Top Ethnicities
88% Caucasian
6% Other

About Saint Louis, MO

St. Louis (/ s eɪ n t ˈ l uː ɪ s /) is an independent city and a major United States port in eastern Missouri. The city was developed along the western bank of the Mississippi River, which forms Missouri's eastern border with Illinois. At the 2010 census, St. Louis' population was 319,294 and a 2013 estimate put the population at 318,416, making it the 58th-most populous U.S. city in 2013 and the second-largest city in the state. The St. Louis metropolitan area, known as Greater St. Louis (CSA), includes the city as well as nearby areas in Missouri and Illinois; it is among the 20 largest metropolitan areas in the United States with a population of 2,905,893. The St. Louis metropolitan area is the largest metropolitan area in the state of Missouri.The city of St. Louis was founded in 1764 by Pierre Laclède and Auguste Chouteau and named after Louis IX of France. After the Louisiana Purchase, it became a major port on the Mississippi River. In the late 19th century, St. Louis became the fourth-largest city in the United States. It seceded from St. Louis County in March 1877, allowing it to become an independent city and limiting its political boundaries. In 1904, it hosted the Louisiana Purchase Exposition and the 1904 Summer Olympics. The city's population peaked in 1950; with restructuring of heavy industry and loss of jobs, plus postwar suburbanization, it began a long decline that continues in the 21st century. Immigration has increased, and the city is the center of the largest Bosnian population in the world outside their homeland.The economy of St. Louis relies on service, manufacturing, trade, transportation of goods, and tourism. The city is home to several major corporations including Express Scripts, Peabody Energy, Ameren, Ralcorp, and Sigma-Aldrich. St. Louis is also home to three professional sports teams: the St. Louis Cardinals —one of the most successful Major League Baseball clubs, the St. Louis Blues of the National Hockey League, and the St. Louis Rams of the National Football League. The city is commonly identified with the 630-foot (192 m) tall Gateway Arch, which is part of the Jefferson National Expansion Memorial in downtown St. Louis.