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 Иллинойс, 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 Центральныйtime, so a local line rings during your customers' business hours and shows a familiar Иллинойс 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 Иллинойс, 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.
Получите 312 ЧислоA 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.
Choose a 312 number in the Ajoxi dashboard and it activates immediately — no hardware, no contracts, and no setup fees. Prefer to keep a number you already use? Port any existing 312 number in for free, usually within a few business days and with no downtime during the switch.
Да. Каждый номер 312 поддерживает SMS и MMS наряду с HD-вызовами, поэтому ваша команда может отправлять текстовые сообщения клиентам, проводить кампании и отвечать на разговоры с одной и той же линии — и все это в браузере на любом устройстве без необходимости установки отдельного приложения.
Предоставление 312 номер с мгновенной активацией, чистым идентификатором вызывающего абонента и маршрутизацией уровня 1 — без платы за установку, в течение нескольких минут.