Thelma Keller Convention Center
Everything the open record has on Thelma Keller Convention Center, a hotel with function space in Mattoon, Illinois — address, size, access and the events it carries.
- From CMI
- 103 km (64 mi)
- University of Illinois Willard Airport
- From the centre
- 42 km (26 mi)
- of Mattoon
Figures as published in open data, retrieved 3 September 2026. Capacities vary by layout — confirm the one you want with the venue.
About this venue
It stands at 1202 North Keller Drive, 62401, 42 km (26 mi) from the centre of Mattoon.
Neither a capacity nor a floor area is published for Thelma Keller Convention Center in any open source, so the numbers on this page describe where it is and what it is, not how many it holds. The venue will quote you directly.
- Address
- 1202 North Keller Drive, Mattoon, Illinois 62401, United States
- Official site
- www.kellerconventioncenter.com
- Coordinates
- 39.1382, -88.5630
- Classified as
- hotel with function space
Travel to Thelma Keller Convention Center
University of Illinois Willard Airport (CMI) is 103 km (64 mi) away. Build a real transfer window into the arrival day and do not schedule anything important before midday.
This is an out-of-centre venue — 42 km (26 mi) from the middle of Mattoon — which usually buys you parking and load-in access in exchange for a transport plan.
The published number for the venue is +1-217-347-5115.
Mattoon has 4 venues mapped in total and a population of 16,602. The Mattoon guide covers the airport, the local time zone and what else is bookable nearby.
What fits in this room
Purpose-built function space is the easiest kind of venue to run a conference in, because the rooms, the power and the load-in already assume it. Confirm which rooms are contiguous and which are on different floors — that is what decides whether your breakouts feel like one event.
- training days and workshops
Purpose-built function rooms with the power and load-in a workshop assumes.
- corporate off-sites
Off-sites, kickoffs and planning days all fit the same room set.
- leadership retreats
Smaller, quieter rooms suit a retreat better than a hall does.
A worked example for Thelma Keller Convention Center
Suppose 240 attendees claim their invite and open the app at a Thelma Keller Convention Center event a plausible programme at a venue of this kind in Mattoon. Here is exactly what event67 charges, with the free 50 taken off the top.
- activated attendees
- 240activated attendees
- billable, after the first 50 are free
- 190billable, after the first 50 are free
- for the whole event, at $5 each
- $950for the whole event, at $5 each
You are billed for people, not for the room, so this figure does not change if you move the event down the road. event67 has no floor-plan or booking product — the venue handles the space, the app handles the people in it.
If this one is booked
2 other venues in Mattoon have enough published detail for their own guide. Worth a shortlist before you commit.
- Burgess-Osborne Memorial Auditoriumevent space
- Chautauqua Auditoriumevent space
Where these numbers come from
event67 is not affiliated with, endorsed by or connected to this venue or its operator. This page is compiled from open data and links to the venue’s own website where one is published.
- OpenStreetMap contributors, ODbL
- Venue data © OpenStreetMap contributors, available under the Open Database License.
- Geographic data © GeoNames, licensed under CC BY 4.0.
- Retrieved 3 September 2026. 5 distinct facts from the record are rendered on this page: street address, postal code, official website, published phone, nearest airport with distance.
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
What is the capacity of Thelma Keller Convention Center?
Not published. Neither a seated capacity nor a floor area for Thelma Keller Convention Center appears in any of the open sources behind this page, so quoting one would be a guess. The venue will give you the figure; ask for seated, theatre and reception separately.
Where is Thelma Keller Convention Center?
1202 North Keller Drive, Mattoon, Illinois 62401, United States. It is 42 km (26 mi) from the centre of Mattoon. The nearest major airport is University of Illinois Willard Airport (CMI), about 103 km (64 mi) away.
What does an event app cost for an event at Thelma Keller Convention Center?
240 activated attendees means 190 billable after the free 50, so $950 for the event. That example is a plausible programme at a venue of this kind in Mattoon. 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.
Is event67 affiliated with Thelma Keller Convention Center?
No. event67 is not affiliated with, endorsed by or connected to this venue or its operator. This page is compiled from open data — OpenStreetMap, Wikidata and public census sources — and links to the venue’s own website where one is published.
What else is nearby if Thelma Keller Convention Center is booked?
Burgess-Osborne Memorial Auditorium and Chautauqua Auditorium are in the same city and have their own pages here. 4 venues in total are mapped in Mattoon.
Keep reading
Elsewhere in Mattoon
- Burgess-Osborne Memorial Auditorium
event space
- Chautauqua Auditorium
event space
- Hosting an event in Mattoon
Up a level
What kind of event is it
Running an event at Thelma Keller Convention Center?
Bring the schedule, the invites and the arrivals into one branded app. Free for your first 50 activated attendees, on one live event.