Where Illinois holds a conference
53 cities and 639 venues mapped across Illinois, with the capacity, the airports and the local time for each.
Soldier Field states the largest capacity in the state. The dots show what event67 would bill at that head count, and where the price stops.
Illinois at a glance
Illinois is a state of United States of about 13 million people. Springfield is the capital, though Chicago is the largest city.
The mapped inventory comes to 38 exhibition or convention halls, 67 dedicated conference and function spaces, 73 arenas and stadiums, 94 theatres and concert halls and 367 independent event spaces.
The largest stated capacity anywhere in the state is 63,500, which is the practical ceiling for a single-room programme here.
- Capital
- Springfield
- has a guide
- Largest city
- Chicago
- 2.7 million people
- Cities covered
- 53
- 49 with their own guide
- Venues mapped
- 639
- 38 convention or exhibition
One time zone across the whole state: Chicago time (America/Chicago). Publish the schedule in it and nothing else needs saying.
Biggest rooms on record
Ranked by stated capacity, then by how much the record can prove. Open data rarely publishes a capacity for a convention centre, so a hall may sit below an arena here without being the smaller room.
| Venue | City | Type | Stated capacity |
|---|---|---|---|
| Soldier Field | Chicago | stadium | 63,500 |
| Gies Memorial Stadium | Champaign | stadium | 55,524 |
| Wrigley Field | Chicago | stadium | 41,072 |
| Rate Field | Chicago | stadium | 40,615 |
| Ryan Field | Evanston | stadium | 35,000 |
| Huskie Stadium | Aurora | stadium | 23,595 |
| United Center | Chicago | stadium | 23,500 |
| SeatGeek Stadium | Chicago | stadium | 20,000 |
| Lincoln Yards Stadium | Chicago | stadium | 20,000 |
| Allstate Arena | Des Plaines | arena | 18,500 |
| Illinois Field | Champaign | stadium | 17,000 |
| Saluki Stadium | Carbondale | stadium | 15,000 |
Where in Illinois to hold it
53 in the dataset, largest first. Each guide covers that city's venues, its airport, its local time and a worked price for an event of that size.
| City | Population | Venues mapped |
|---|---|---|
| Chicago | 2,721,308 | 231 |
| Aurora | 180,710 | 20 |
| Naperville | 153,124 | 8 |
| Joliet | 151,837 | 13 |
| Rockford | 147,486 | 21 |
| Elgin | 114,701 | 16 |
| North Peoria | 113,004 | 10 |
| Springfield | 112,949 | 22 |
| Peoria | 111,696 | 21 |
| Champaign | 91,961 | 28 |
| Waukegan | 88,570 | 10 |
| Bloomington | 79,232 | 15 |
| Schaumburg | 77,099 | 6 |
| Evanston | 76,006 | 18 |
| Arlington Heights | 75,596 | 3 |
| Bolingbrook | 74,756 | 4 |
| Decatur | 68,763 | 7 |
| Palatine | 65,951 | 7 |
| Skokie | 65,850 | 4 |
| Des Plaines | 58,832 | 7 |
| Orland Park | 58,020 | 3 |
| Oak Lawn | 56,531 | 4 |
| Mount Prospect | 55,460 | 1 |
| Tinley Park | 54,856 | 5 |
| Wheaton | 53,741 | 4 |
| Normal | 53,304 | 12 |
| Downers Grove | 50,552 | 5 |
| Elmhurst | 46,108 | 2 |
| Moline | 42,442 | 4 |
| Belleville | 40,560 | 6 |
| Quincy | 38,786 | 10 |
| Park Ridge | 38,445 | 6 |
| Calumet City | 34,855 | 3 |
| Northbrook | 34,546 | 8 |
| Highland Park | 30,794 | 2 |
| Niles | 29,918 | 4 |
| Galesburg | 29,289 | 11 |
| Danville | 27,981 | 3 |
| Yorkville | 25,986 | 11 |
| Collinsville | 23,766 | 13 |
| Carbondale | 22,223 | 13 |
| East Moline | 20,995 | 7 |
| Lake Forest | 19,642 | 3 |
| Palos Hills | 18,026 | 1 |
| Charleston | 17,361 | 4 |
| Marion | 17,021 | 11 |
| Mattoon | 16,602 | 4 |
| Fairview Heights | 16,115 | 2 |
| Washington | 15,857 | 6 |
Also in Illinois, with nothing mapped yet to build a guide from: Cicero, Berwyn, Oak Park and Hoffman Estates. They appear here rather than as pages with three facts on them.
A worked example for Illinois
Suppose 950 attendees claim their invite and open the app at a Illinois event sized to Soldier Field in Chicago, the largest stated capacity in the Illinois dataset. Here is exactly what event67 charges, with the free 50 taken off the top.
- activated attendees
- 950activated attendees
- billable, after the free 50
- 900billable, after the free 50
- for the whole event, at $5 each
- $4,500for the whole event, at $5 each
Where this data comes from
- Geographic data © GeoNames, licensed under CC BY 4.0.
- Venue data © OpenStreetMap contributors, available under the Open Database License.
- Administrative attributes and the population figure from Wikidata, CC0 (Wikidata (P1082)).
- City populations are US Census Bureau Vintage 2024 estimates.
- Retrieved 3 September 2026. event67 has no commercial relationship with any venue listed.
Last updated
What it costs
- Free up to 50
- activated attendees, on one live event
- $5
- per activated attendee beyond 50
- $4,750
- the most one event can ever cost, whatever happens past 1,000
Activated means the person claimed their invite and opened the app. Not when you import them, not when the invite is delivered, and not if they register and stay home.
Questions people actually ask
Which Illinois city is best for a conference?
It depends on how many people you need to seat and how they arrive. Chicago has the deepest venue list in this state, while Springfield, the capital, carries the government and association calendar. The table above ranks every covered city by how many venues are mapped in it, which is the closest proxy to choice you will get before you start calling.
How many event venues are there in Illinois?
639 venues across 53 cities are mapped in this dataset, of which 38 are convention, exhibition or conference facilities. That is what open data records, not a complete registry — small function rooms inside hotels and community buildings are consistently under-mapped everywhere.
What does event67 cost for a Illinois event?
950 activated attendees means 900 billable after the free 50, so $4,500 for the event. The rate is $5 per activated attendee beyond the first 50, and the total for one event stops at $4,750 however many more attend. Activated means the person claimed their invite and opened the app. Not when you import them, not when the invite is delivered, and not if they register and stay home.
What is the biggest venue in Illinois?
Soldier Field, at a stated 63,500. That is the practical ceiling for a single-room programme anywhere in the state; above it you are splitting the audience across buildings or looking outside Illinois.
Keep reading
Start with a city
- Hosting an event in Chicago
231 venues mapped
- Hosting an event in Aurora
20 venues mapped
- Hosting an event in Naperville
8 venues mapped
- Hosting an event in Joliet
13 venues mapped
- Hosting an event in Rockford
21 venues mapped
- Hosting an event in Elgin
16 venues mapped
Running something in Illinois?
Pick the city, then let the app do the schedule, the invites and the arrivals. Free for your first 50 activated attendees.