Illinois at a glance
| Time zone | Central Time |
|---|---|
| Main area codes | 312 and 872 (downtown Chicago), 773 (Chicago), 847 and 224 (north suburbs), 630 and 331 (west suburbs), 708 (south and west suburbs), 815 and 779 (Rockford and the north), 309 and 861 (Peoria), 217 and 447 (Springfield and Champaign), 618 and 730 (Southern Illinois) |
| Largest cities | Chicago, Aurora, Naperville, Joliet, Rockford, Springfield |
| Sectors with the most small employers | professional services, repair and personal services, construction and the trades, health care, restaurants (SBA Office of Advocacy, 2025 profile) |
| Call-recording consent | All-party consent (720 ILCS 5/14-2) |
Small business in Illinois
Illinois small businesses center on Chicagoland, where restaurants, salons, contractors and professional firms fill the city's neighborhoods and suburbs from Naperville to Schaumburg, but they extend to manufacturers and suppliers in Rockford, insurance offices around Bloomington and family businesses in college towns like Champaign. Winter brings heating and plumbing emergencies statewide.
According to the SBA Office of Advocacy's 2025 profile of Illinois, the sectors with the most small employers are professional services such as law, accounting, engineering and consulting, repair and personal services such as auto repair, salons and dry cleaners, construction and the trades, health care, including medical, dental and therapy offices and restaurants, cafés and lodging.
Where Ava helps Illinois businesses
- Clear recording notice. Because Illinois restricts secret recording of private conversations, Ava's greeting can include a recording notice whenever your setup records calls.
- No-heat and frozen-pipe calls. Heating and plumbing companies can have Ava separate emergencies from routine calls during cold snaps, using your rules.
- Neighborhood restaurants and salons. Chicago restaurants and salons can send rush-hour calls to Ava for reservation and booking requests.
Industry pages that match Illinois's most common small businesses:
An example call
Lakeview Heating & Cooling (example) · Ava, AI receptionist
Our furnace stopped and it's 8 degrees out
I'm sorry. I'm the company's AI assistant, and this call may be recorded. I'll mark this urgent. What's the address?
Recording calls in Illinois
All-party consent. Illinois is generally an all-party consent state for private conversations. 720 ILCS 5/14-2 prohibits surreptitiously recording a private conversation, including one by phone, without the consent of all parties, even if you're one of them. The law focuses on secret recording, which is another reason to give a clear notice at the start of each call.
Illinois businesses often get calls from Indiana, Wisconsin, Missouri, Iowa and Kentucky. Those states also use one-party consent for calls, though a caller from an all-party state like California can still reach your local number.
Ava always says she's an AI. If your setup records calls, the script we draft adds a short recording notice to her greeting, and you approve the wording. Interstate calls can be tricky; see the state-by-state overview.
Time zones and after-hours coverage
Illinois runs on Central Time. We set Ava's business-hours and after-hours scripts to your local Illinois time, so early-morning and late-night callers still reach someone.
How setup works from New Jersey
A short call about how your Illinois business handles the phone, a script you approve, test calls, then call forwarding from your current number. See how it works.
Sources
- Justia 50-state recording survey (reviewed Sept. 2024)
- 720 ILCS 5/14-2 (Illinois General Assembly)
- 18 U.S.C. § 2511
- SBA Office of Advocacy: Illinois 2025 Small Business Profile (PDF)
- 49 CFR Part 71 (time zones)
General information, not legal advice. Checked November 3, 2026; laws change.