In the North American Numbering Plan, area code 312 refers to the telecom region serving the town of Chicago, which involves the Chicago Loop, the heart of the city, and the surrounding areas. The 312 area code represents the town’s development, modernity, and rich past.
The 312 area code additionally covers the surrounding areas of Wicker Park and Lincoln Park. The 312 area code also includes communities outside Chicago, such as Oak Forest and Park Forest. The whole numbering plan region is served by area code 773, which covers the remaining territory of Chicago.
Area code nearby Illinois are: area code 773, area code 464, area code 224, area code 219, area code 816, area code 417, area code 317 and 331 area code.
Origin of the 312 Area Code
Renowned as the first 86 area code, 312 was assigned to the Chicago metropolitan region when it was first used in 1947. When the 312 area code was separated in 1996, specific contact numbers had to be updated to the new area code, 773.
The area code 872 was established in 2009 and is now superimposed onto 312 and 773. In the jurisdiction of Illinois, it was the first area code. Now, 872 serves the whole territory of Chicago, Illinois.
Where is the 312 Area Code?
The 312 area code serves Chicago, Illinois, and the top 1 county in this area code is Cook, where about 5,194,675 people reside. The top one city in the 312 area code with 2,695,598 population is Chicago.
The following area codes are close to the 312 area code: 224/847 (Elgin, IL); 464/708 (Cicero, IL); 773/815 (Rockford, IL); and 872 (Chicago, IL).
A table including area coverage and population of counties within the 312 area code is given below:
| COUNTIES | POPULATION | AREA COVERAGE |
| Cook | 5.109 million | 1,635 mi² |
| Dupage | 920,901 | 337 mi² |
The Cities within the 312 area code, including people residing and the area covered, are illustrated in the table:
| CITIES | POPULATION | AREA COVERAGE |
| Chicago | 2.665 million | 231.7 mi² |
| Northbrook | 34,182 | 13.30 mi² |
| Hinsdale | 17,235 | 4.66 mi² |
| Wheeling | 26,391 | 16.00 mi² |
Need for 312 local Business Numbers in Chicago?
Chicago is the third-highest populated state in the US, with an estimated population of 2,746,388. With the increasing population, there is high demand in the business sector. Being the second largest business area, people running the business want to expand their business more.
For expanding business in various states and counties, the 312 area code number is needed. As the 312 local business number is a local area code, many residents prefer to build connections through it. Having the 312 area code number enhances the smooth building of the business and builds trust as the local number conveys familiarity with customers with great marketing strategies.
How to Get a 312 Area Code Number
To access a 312 area code number, various virtual number providers can help to get a desirable number. Some of the virtual number providers are Calilio, Openphone, Krispcall, etc.
Steps to acquire the 312 area code number:
- Pick a reliable service provider with numerous 312 area code numbers so you can find which one you want.
- Sign up with your Google account to get the virtual number you need to use.
- After signing up, read all the points about the number you are going to select.
- Choose wisely and manage the setting by asking your number provider.
- Finally, after setting all things up a 312 area code number is ready to use.
The time zone of 312 Area Code
The Central Time Zone (CT) encompasses the area code 312. Coordinated Universal Time (UTC) and Central Daylight Time (CDT) are five hours apart. It is Daylight saving time, or DST, in this time zone.
Detail about the time zone in the 312 area code table:
| Start date of Daylight Saving | Local time on Sunday, March 10, 2024 at 2:00 AM |
| End date of Daylight Saving | Local time on Sunday, November 03, 2024 at 2:00 AM |
| Hours apart from CDT | 5:00 hours |
| Hours behind GMT | 6:00 hours during daylight standard time and 7 hours during daylight saving time |
How does the 312 Area Code Number Work?
A 10-digit number in the 312 area code, which consists of the first three numbers, directs the call to a certain region. The call is routed to a specific phone switch inside that region using the following three numbers, which are the central office code. The call is routed to a particular client or line using the last four numbers, often known as a station code.
It’s important to remember that when making a worldwide call, you must first enter the country’s dialing code, followed by the phone number with a + sign at first.
Conclusion
In conclusion, the 312 area code provides service to a certain part of Chicago, Illinois. Although the 312 area code serves the smallest area, it is essential for local people to run their businesses as well as it has great importance in linking to people personally, which builds faith between locals.
Frequently Asked Questions (FAQs)
How old is the 312 area code?
In 1947, the 312 area code first came into use.
What zone is the 312 area code in?
The 312 area code is in the central time zone.
What is the overlay code for the 312 area code?
872 has been superimposed over 312 and 773 from November 7, 2009.
Where do you live if your number starts with 312?
If the number starts with the area code 312, Chicago, Illinois, is calling you.