Get a local business phone number in Highland, IL

What area code is Highland, IL?

Highland city is a Census place in Madison County, Illinois, with an estimated 10,028 residents in 2024. All 5 exchanges NANPA lists for its rate center are in area code 618. 618 is part of an overlay with 730, so a new local number in Highland may carry any of those codes depending on which have numbers available. Highland is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 618 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Who holds Highland phone exchanges

3 carriers hold the 5 exchanges assigned to Highland's rate center. Metropcs, INC. has the most, with 2. 4 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Highland can come from any of these blocks; once it is yours, porting lets it move between providers.

Highland phone prefixes

These are the central office codes NANPA records for Highland. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2002. 1 of the 5 were assigned in 2020 or later.

When Highland's exchanges were assigned

The table groups Highland's exchanges by the decade NANPA recorded them as assigned.

Rate centers and local calling in Highland

NANPA ties every exchange to a rate center. For Highland that is HIGHLAND, so a number from one of these exchanges reads as local to people in and around Highland.

Keeping an existing Highland number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 618 when you pick it.

Businesses around Highland

Highland is part of the St. Louis, MO-IL metro area, home to 2.8 million people in 2024. County Business Patterns counted 69,470 business establishments in the St. Louis, MO-IL metro area in 2023, employing 1,263,674 people. The largest sectors by establishment count are health care and social assistance (10,427), retail trade (8,095), and professional, scientific, and technical services (7,057).

A Highland number on Callata

For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.

Porting a number you already use in Highland is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.

The comparison below uses 18 users, the rounded average establishment size in the St. Louis, MO-IL metro area. At list prices checked September 28, 2026, that is $449.10 a month on Ooma Office Pro and $540.00 on RingCentral RingEX Core. Callata comes to $359.00 a month for 18 users ($99 a month with 5 users included, then $20 per additional user), below both.