The 618 area code covers Belleville, East St. Louis, Alton and more in Illinois. Provision a local 618 number in minutes.
Area code 618 covers southern Illinois, a region economically integrated with St. Louis, Missouri across the Mississippi River. The area has a mix of suburban communities near St. Louis, agricultural heartland, and the Southern Illinois University campus in Carbondale. East St. Louis has historically been one of the most challenged urban communities in the Midwest.
Across Illinois, the 618 area code serves roughly 700,000 residents in 4 communities — including Belleville, East St. Louis, Alton, among others. Numbers in the 618 zone keep Centraltime, so a local line rings during your customers' business hours and shows a familiar IL caller ID on every outbound call.
618 was first introduced in 1951 under the North American Numbering Plan. It remains an active geographic code today.
Want a 618 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 618 area code reaches 4 communities across Illinois, from Belleville to Carbondale. 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 Belleville presence with enterprise-grade UCaaS — calling, meetings, and messaging on one platform.
Get a 618 NumberA 618 number tells Belleville customers you're local — instant trust and higher answer rates, no office required.
Every 618 line includes HD calling, video meetings, team chat, SMS/MMS, auto-attendant, call recording, and an AI assistant.
Already have a 618 number? Port it in for free. Your number stays yours — port out anytime, no lock-in.
The 618 area code covers Belleville, East St. Louis, Alton, Carbondale in Illinois.
Phone numbers in the 618 area code operate on America/Chicago time.
Yes. The 618 area code was introduced in 1951 and remains an active geographic code today.
Yes. Ajoxi provisions virtual 618 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 618 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 618 number in for free, usually within a few business days and with no downtime during the switch.
Yes. Every 618 number supports SMS and MMS alongside HD calling, so your team can text customers, run campaigns, and reply to conversations from the same line — all in the browser on any device, with no separate app to install.
Provision a 618 number with instant activation, clean caller-ID, and Tier-1 routing — no setup fees, live in minutes.