AT&T Illinois
ActiveRegulated Business License · Chicago / Cook County, IL
At a glance
Public records place AT&T Illinois at 2 active locations in 2 Chicago office buildings. Locations include 10 S CANAL ST; 6249 S KILBOURN AVE.
Public record — Chicago / Cook County
Office locations (2 active)
| Building | Suite / floor | Submarket | Since | Source | Match |
|---|---|---|---|---|---|
| 10 S CANAL ST | — | Chicago | Sep 2024 | Chicago business licence | address match · high |
| 6249 S KILBOURN AVE | — | Chicago | Sep 2024 | Chicago business licence | address match · high |
Where does AT&T Illinois operate in Chicago?
The earliest active record dates from Sep 2024 and the most recent from Sep 2024.
Across Chicago, 4,834 active business locations are matched to office buildings; AT&T Illinois accounts for 2 of them.
How does BuildingCensus know AT&T Illinois is at these addresses?
Each location is a business record whose premises address was matched to a county office parcel (record types on this page: Chicago business licence). The match method and confidence are shown on every row.
A record at an address is evidence that the business operates there, not a lease: records lag moves by months, and businesses without a local record at an address do not appear.
Frequently asked questions
Where are AT&T Illinois's offices in Chicago?
Public records place AT&T Illinois at 2 active locations in Chicago / Cook County: 10 S CANAL ST; 6249 S KILBOURN AVE.
How long has AT&T Illinois been at its Chicago locations?
The earliest active record starts Sep 2024; the newest Sep 2024. Start dates are when the record was opened, which can trail the actual move-in.
Related
Data provenance — public records only
- Chicago / Cook County — Cook County Assessor parcel, commercial-valuation and sales datasets (owner names, mailing addresses, priced sales with buyer and seller); City of Chicago active business licences for occupancy. Licence addresses are street-level, and state-licensed professions are absent from the city roll.
Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.
Dataset updated . Locations from Chicago / Cook County business records matched to county office parcels.
About this data
Source: Cook County Assessor parcel, commercial-valuation and sales datasets (Chicago / Cook County), as published October 7, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “AT&T Illinois — Chicago office locations”, https://buildingcensus.com/offices/chicago/companies/at-t-illinois (data as of October 7, 2026).