Marriott Marquis Chicago — Event Spaces, Floor Plans & Capacities

2121 S Prairie Ave, Chicago, IL 60616

64 rooms · 193,289 sq ft17,957 m² of event space, per the hotel

With 64 event rooms and 193,289 sq ft17,957 m² of event space, per the hotel, Marriott Marquis Chicago is a flexible choice for meetings and celebrations in Chicago. The largest space is Grand Horizon Ballroom, 25,000 sq ft2,323 m² (divisible into 7 sections). It holds up to 3,068 guests. Full capacity details for each room are below.

Between them, the 64 rooms accommodate theater-style sessions for up to 10,000, seated banquets for 5,550 and standing receptions for 2,600. 7 smaller rooms suit breakouts and board meetings. Per-room dimensions and every published setup figure are listed below.

Floor plan — Grand Horizon Ballroom

Marriott Marquis Chicago — Grand Horizon Ballroom floor plan, 149.1 × 168 ftWalls, air walls and doors of Grand Horizon Ballroom at Marriott Marquis Chicago, drawn to scale by Floors.Marriott Marquis Chicago · Grand Horizon Ballroom, Level 4Ballroom 168 × 149 ft · traced 1:1 from the published plan, redrawn in Floors styleABCDEFGGrand Horizon Ballroom168 × 149 ft · 25,000 sq ft · 1,500 banquetGrand Horizon Ballroom FoyerChina TownFitness CenterElevatorsRestroomsService

149.1 × 168 ft · 25,000 sq ft · ceiling 29 ft · divides into 7 sections · 1,500 banquet / 3,068 theater

Redrawn by Floors from the venue’s published plan. Check dimensions with the venue before you book.

Light grey: surrounding rooms on the same floor, for orientation.

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Unverified listing — compiled from Marriott Marquis Chicago’s published information. Venue staff can verify capacities and setups free: floors.live/venues/us/illinois/chicago/marriott-marquis-chicago/?claim=1.

Floor plans

Detailed floor plans for Marriott Marquis Chicago are published on the venue’s official site.

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Room capacities & dimensions

102 configurations listed. Combined and divided set-ups are listed under their room.

Room capacities and dimensions for Marriott Marquis Chicago
SpaceCeiling
AlgebraPlan this room →474 sq ft44 m²9 ft2.7 m————12—
AnalysisPlan this room →837 sq ft78 m²9 ft2.7 m508136752630
AnthropologyPlan this room →615 sq ft57 m²9 ft2.7 m306135452023
ArchitecturePlan this room →885 sq ft82 m²9 ft2.7 m507442752831
AstronomyPlan this room →612 sq ft57 m²9 ft2.7 m306935602427
BiologyPlan this room →650 sq ft60 m²9 ft2.7 m306939451821
BronzevillePlan this room →393 sq ft37 m²10 ft3 m————12—
CalculusPlan this room →850 sq ft79 m²9 ft2.7 m509052752629
ChemistryPlan this room →474 sq ft44 m²9 ft2.7 m————12—
China TownPlan this room →701 sq ft65 m²10 ft3 m40—60122412
CulturePlan this room →837 sq ft78 m²9 ft2.7 m508047752628
DancePlan this room →615 sq ft57 m²9 ft2.7 m306334452425
Daniel Burnham APlan this room →827 sq ft77 m²10 ft3 m509148752223
1 configuration with Daniel Burnham A
Combined and divided set-ups that include Daniel Burnham A
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Daniel BurnhamPlan this room →1,563 sq ft145 m²10 ft3 m1001701081503844
Daniel Burnham BPlan this room →734 sq ft68 m²10 ft3 m406636602223
GeographyPlan this room →845 sq ft79 m²9 ft2.7 m509047752830
GeologyPlan this room →612 sq ft57 m²9 ft2.7 m305634452224
George PullmanPlan this room →1,364 sq ft127 m²10 ft3 m80108671203238
Glessner House APlan this room →749 sq ft70 m²10 ft3 m406238601818
3 configurations with Glessner House A
Combined and divided set-ups that include Glessner House A
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Glessner HousePlan this room →3,285 sq ft305 m²10 ft3 m170349201300102105
Glessner House A/BPlan this room →2,198 sq ft204 m²10 ft3 m1002041131506051
Glessner House B/CPlan this room →2,744 sq ft255 m²10 ft3 m1102391251657256
Glessner House BPlan this room →1,579 sq ft147 m²10 ft3 m6014275904239
Glessner House CPlan this room →1,195 sq ft111 m²10 ft3 m509750753023
Grand Horizon APlan this room →3,000 sq ft279 m²29 ft8.8 m1502801321806060
9 configurations with Grand Horizon A
Combined and divided set-ups that include Grand Horizon A
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Grand Horizon A/BPlan this room →6,009 sq ft558 m²29 ft8.8 m40044231242012090
Grand Horizon A/B/CPlan this room →9,230 sq ft857 m²29 ft8.8 m550722492660—120
Grand Horizon A/B/C/DPlan this room →14,421 sq ft1,340 m²29 ft8.8 m9601,1318041,060——
Grand Horizon B/CPlan this room →6,442 sq ft598 m²29 ft8.8 m45052036048012090
Grand Horizon BallroomPlan this room →25,000 sq ft2,323 m²29 ft8.8 m1,5003,0681,7302,600——
Grand Horizon D/E/F/GPlan this room →15,562 sq ft1,446 m²29 ft8.8 m9101,3098881,225——
Grand Horizon E/FPlan this room →6,745 sq ft627 m²29.6 ft9 m35056036052512090
Grand Horizon E/F/GPlan this room →10,371 sq ft963 m²29 ft8.8 m550880576825—120
Grand Horizon F/GPlan this room →7,247 sq ft673 m²29 ft8.8 m37064043260012090
Grand Horizon BPlan this room →3,500 sq ft325 m²29 ft8.8 m2003121802406060
Grand Horizon CPlan this room →3,500 sq ft325 m²29 ft8.8 m2002881802406060
Grand Horizon DPlan this room →5,300 sq ft492 m²29 ft8.8 m240——400——
Grand Horizon EPlan this room →3,124 sq ft290 m²29 ft8.8 m1502401442256060
Grand Horizon FPlan this room →4,000 sq ft372 m²29 ft8.8 m2003202003006060
Grand Horizon GPlan this room →4,000 sq ft372 m²29 ft8.8 m2803202003006060
Great Lakes Ballroom APlan this room →3,000 sq ft279 m²24 ft7.3 m1502801321806060
9 configurations with Great Lakes Ballroom A
Combined and divided set-ups that include Great Lakes Ballroom A
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Great Lakes BallroomPlan this room →25,000 sq ft2,323 m²24 ft7.3 m1,3903,0681,7302,100——
Great Lakes Ballroom A/BPlan this room →6,081 sq ft565 m²24 ft7.3 m40044231242012090
Great Lakes Ballroom A/B/CPlan this room →9,286 sq ft863 m²24 ft7.3 m550702492660—120
Great Lakes Ballroom A/B/C/DPlan this room →14,478 sq ft1,345 m²24 ft7.3 m9601,1318041,060——
Great Lakes Ballroom B/CPlan this room →6,497 sq ft604 m²24 ft7.3 m45052036048012090
Great Lakes Ballroom D/E/F/GPlan this room →15,551 sq ft1,445 m²24 ft7.3 m9101,4448881,225——
Great Lakes Ballroom E/FPlan this room →6,739 sq ft626 m²24 ft7.3 m35056036052512090
Great Lakes Ballroom E/F/GPlan this room →10,360 sq ft962 m²24 ft7.3 m550880576825—120
Great Lakes Ballroom F/GPlan this room →7,240 sq ft673 m²24 ft7.3 m37064043260012090
Great Lakes Ballroom BPlan this room →3,500 sq ft325 m²24 ft7.3 m2003121802406060
Great Lakes Ballroom CPlan this room →3,600 sq ft334 m²24 ft7.3 m2002881802406060
Great Lakes Ballroom DPlan this room →5,292 sq ft492 m²24 ft7.3 m240——400——
Great Lakes Ballroom EPlan this room →3,120 sq ft290 m²24 ft7.3 m1502401442256060
Great Lakes Ballroom FPlan this room →4,000 sq ft372 m²24 ft7.3 m2003202003006060
Great Lakes Ballroom FoyerPlan this room →7,897 sq ft734 m²————900——
Great Lakes Ballroom GPlan this room →4,000 sq ft372 m²24 ft7.3 m2803202003006060
Henry ClarkePlan this room →1,355 sq ft126 m²10 ft3 m80108671203238
HistoryPlan this room →729 sq ft68 m²9 ft2.7 m509853752529
IntegralsPlan this room →640 sq ft59 m²9 ft2.7 m307631451821
John HancockPlan this room →635 sq ft59 m²10 ft3 m404524601620
JournalismPlan this room →838 sq ft78 m²9 ft2.7 m509754752629
Level 1Plan this room →——390——400——
Level 33Plan this room →3,000 sq ft279 m²————150——
LiteraturePlan this room →729 sq ft68 m²9 ft2.7 m307836452024
Marina CityPlan this room →894 sq ft83 m²10 ft3 m608854902020
Marshall FieldPlan this room →714 sq ft66 m²10 ft3 m404932601822
MusicPlan this room →400 sq ft37 m²9 ft2.7 m————12—
Northerly IslandPlan this room →662 sq ft62 m²10 ft3 m—6024401212
PhilosophyPlan this room →716 sq ft67 m²9 ft2.7 m508047752628
PhysicsPlan this room →473 sq ft44 m²9 ft2.7 m————12—
PhysiologyPlan this room →836 sq ft78 m²9 ft2.7 m508047752628
PoetryPlan this room →615 sq ft57 m²9 ft2.7 m306334452425
ProbabilityPlan this room →900 sq ft84 m²9 ft2.7 m509047752830
RR DonnelleyPlan this room →662 sq ft62 m²10 ft3 m405528601821
SciencePlan this room →612 sq ft57 m²9 ft2.7 m305634452224
Shedd APlan this room →1,080 sq ft100 m²10 ft3 m507240752426
1 configuration with Shedd A
Combined and divided set-ups that include Shedd A
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
SheddPlan this room →1,940 sq ft180 m²10 ft3 m1001681001504852
Shedd BPlan this room →880 sq ft82 m²10 ft3 m507250752426
Skyline Ballroom at McCormick Place W375APlan this room →15,257 sq ft1,417 m²40 ft12.2 m9301,680840———
7 configurations with Skyline Ballroom at McCormick Place W375A
Combined and divided set-ups that include Skyline Ballroom at McCormick Place W375A
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Skyline Ballroom at McCormick Place W375Plan this room →100,289 sq ft9,317 m²40 ft12.2 m5,55010,0005,001———
Skyline Ballroom at McCormick Place W375ABPlan this room →33,696 sq ft3,130 m²40 ft12.2 m1,8003,2001,500———
Skyline Ballroom at McCormick Place W375ABCPlan this room →52,416 sq ft4,870 m²40 ft12.2 m2,7505,0002,400———
Skyline Ballroom at McCormick Place W375BCPlan this room →37,398 sq ft3,474 m²40 ft12.2 m1,8003,5001,600———
Skyline Ballroom at McCormick Place W375CDPlan this room →37,440 sq ft3,478 m²40 ft12.2 m1,9003,5001,600———
Skyline Ballroom at McCormick Place W375CDEPlan this room →66,144 sq ft6,145 m²40 ft12.2 m3,6006,5003,100———
Skyline Ballroom at McCormick Place W375DEPlan this room →44,916 sq ft4,173 m²40 ft12.2 m2,6004,6502,300———
Skyline Ballroom at McCormick Place W375BPlan this room →18,720 sq ft1,739 m²40 ft12.2 m9801,768844———
Skyline Ballroom at McCormick Place W375CPlan this room →26,100 sq ft2,425 m²40 ft12.2 m9801,768844———
Skyline Ballroom at McCormick Place W375DPlan this room →18,810 sq ft1,748 m²40 ft12.2 m9801,768844———
Skyline Ballroom at McCormick Place W375EPlan this room →27,383 sq ft2,544 m²40 ft12.2 m1,6803,0161,508———
SportsPlan this room →831 sq ft77 m²9 ft2.7 m509853752629
StatisticsPlan this room →640 sq ft59 m²9 ft2.7 m307631451821
TechnologyPlan this room →838 sq ft78 m²9 ft2.7 m509754752629
TheaterPlan this room →729 sq ft68 m²9 ft2.7 m307838452024
TrigonometryPlan this room →715 sq ft66 m²9 ft2.7 m406840602826
Water Tower APlan this room →1,289 sq ft120 m²10 ft3 m6011066903034
1 configuration with Water Tower A
Combined and divided set-ups that include Water Tower A
ConfigurationSq ft / m²CeilingBanquetTheaterClassroomReceptionConferenceU-Shape
Water TowerPlan this room →2,304 sq ft214 m²10 ft3 m1201961221806060
Water Tower BPlan this room →1,055 sq ft98 m²10 ft3 m608246902428
William KimballPlan this room →348 sq ft32 m²10 ft3 m————12—
ZoologyPlan this room →401 sq ft37 m²9 ft2.7 m————12—
Additional spaces (dimensions only) (1)
Additional spaces with published dimensions only at Marriott Marquis Chicago
SpaceSq ft / m²Ceiling
Grand Horizon Ballroom Pre-FunctionPlan this room →8,095 sq ft752 m²—

Figures from published venue data; blank cells mean the venue hasn’t published that number. Verify final counts with the venue.

Sizing another room? Try the event room capacity calculator or the floor plan scale converter, or compare the largest event spaces in Chicago.

Frequently asked questions

What is the floor plan of Marriott Marquis Chicago?

Marriott Marquis Chicago has 64 event rooms and 193,289 sq ft of event space, per the hotel. The largest space is Grand Horizon Ballroom, 25,000 sq ft (149.1 × 168 ft). The floor plan of Grand Horizon Ballroom is drawn to scale on this page. Every room's dimensions and seating capacity by setup are listed on this page. Marriott Marquis Chicago's own floor plans are published on its website, linked from this page.

How many event rooms does Marriott Marquis Chicago have?

Marriott Marquis Chicago has 64 event rooms and 193,289 sq ft of event space, per the hotel. 102 configurations are listed on this page.

What is the largest space at Marriott Marquis Chicago?

Grand Horizon Ballroom, 25,000 sq ft (divisible into 7 sections): 149.1 × 168 ft, 1,500 banquet / 3,068 theater.

How many people can Marriott Marquis Chicago seat for a banquet?

Up to 5,550 in Skyline Ballroom at McCormick Place W375. The next largest room, Grand Horizon Ballroom, seats 1,500.

Can Grand Horizon Ballroom be divided?

Yes. Grand Horizon Ballroom divides into 7 sections: A, B, C, D, E, F, G.

What is the ceiling height at Marriott Marquis Chicago?

The highest ceiling is 40 ft, in Skyline Ballroom at McCormick Place W375A.

How do I get a floor plan of Grand Horizon Ballroom?

The floor plan of Grand Horizon Ballroom is drawn on this page, above the room list. "Plan this room" opens it in the Floors planner with the walls in place.

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