The 312 area code covers Chicago, The Loop, River North and more in Illinois. Provision a local 312 number in minutes.
Area code 312 is Chicago's most prestigious code, covering only the dense urban core of the city including the Loop, River North, and the lakefront neighborhoods. Numbers in the 312 area code signal an established Chicago business. The wider city is served by 773 and surrounding suburbs use 708, 847, 630, and others.
Across Illinois, the 312 area code serves roughly 800,000 residents in 4 communities — including Chicago, The Loop, River North, among others. Numbers in the 312 zone keep Centraltime, so a local line rings during your customers' business hours and shows a familiar IL caller ID on every outbound call.
312 was first introduced in 1947 under the North American Numbering Plan. It remains an active geographic code today.
Want a 312 number of your own? With Ajoxi you can claim one in minutes — no hardware, no contracts — and route calls, SMS, voicemail, and team messaging anywhere on a single UCaaS platform, with Tier-1 routing and clean caller-ID delivery on every line.
The 312 area code reaches 4 communities across Illinois, from Chicago to Near North Side. A customer in any of them sees a familiar local number when you call, which is the single biggest driver of answer rates — and with Ajoxi you can claim a number in any of these cities, or several at once, and route every call to the same team.
Pair a local Chicago presence with enterprise-grade UCaaS — calling, meetings, and messaging on one platform.
Get a 312 NumberA 312 number tells Chicago customers you're local — instant trust and higher answer rates, no office required.
Every 312 line includes HD calling, video meetings, team chat, SMS/MMS, auto-attendant, call recording, and an AI assistant.
Already have a 312 number? Port it in for free. Your number stays yours — port out anytime, no lock-in.
The 312 area code covers Chicago, The Loop, River North, Near North Side in Illinois.
Phone numbers in the 312 area code operate on America/Chicago time.
Yes. The 312 area code was introduced in 1947 and remains an active geographic code today.
Yes. Ajoxi provisions virtual 312 numbers with instant activation, clean caller-ID delivery, Tier-1 routing, and no setup fees — so you can build a local presence in minutes.
Ajoxipanosunda bir 312 numarası seçtiğinizde hemen etkinleştirilir; donanım yok, sözleşme yok ve kurulum ücreti yok. Halihazırda kullandığınız bir numarayı saklamayı mı tercih ediyorsunuz? Mevcut herhangi bir 312 numarasını, genellikle birkaç iş günü içinde ve geçiş sırasında hiçbir kesinti olmadan ücretsiz olarak taşıyın.
Evet. Her 312 numarası, HD aramanın yanı sıra SMS ve MMS'i de destekler; böylece ekibiniz, herhangi bir cihazdaki tarayıcıdan, ayrı bir uygulama yüklemeye gerek kalmadan müşterilere mesaj gönderebilir, kampanyalar yürütebilir ve aynı hattan konuşmalara yanıt verebilir.
Provizyon a 312 Anında etkinleştirme, temiz arayan kimliği ve Katman 1 yönlendirme özelliklerine sahip numara; kurulum ücreti yok, dakikalar içinde yayına alın.