The Westin Chicago River North — Event Spaces, Floor Plans & Capacities

320 N Dearborn St, Chicago, IL 60654

14 rooms · largest space: Grand Ballroom, 8,436 sq ft784 m²

The Westin Chicago River North gives Chicago event planners 14 rooms to work with. The largest space is Grand Ballroom, 8,436 sq ft784 m². It holds up to 1,000 guests. Review the layouts and seating capacities below, then test your setup in 3D — free.

Plan an event in Grand Ballroom: open a free to-scale layout seating 540 at round tables in its 111 × 76 ft footprint at floors.live/start — no account needed.

Across its 14 rooms, The Westin Chicago River North handles theater-style sessions for up to 900, seated banquets for 700 and standing receptions for 1,000. 5 smaller rooms suit breakouts and board meetings. Exact figures for every room and setup style are in the chart below.

Plan your event in this space — free

Unverified listing — compiled from The Westin Chicago River North’s published information. Venue staff can verify capacities and setups free: floors.live/venues/us/illinois/chicago/the-westin-chicago-river-north/?claim=1.

Floor plans

Detailed floor plans for The Westin Chicago River North are published on the venue’s official site.

View official floor plans at Marriott ↗Plan your event in this space — free

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Room capacities & dimensions

14 rooms

Room capacities and dimensions for The Westin Chicago River North
Space	Sq ft / m²	Ceiling	Banquet	Theater	Classroom	Reception	Conference	U-Shape
Astor BallroomPlan this room →	2,852 sq ft265 m²	12.7 ft3.9 m	210	130	100	351	54	55
Burnham ParkPlan this room →	253 sq ft24 m²	8 ft2.4 m	—	—	—	—	10	—
Caucus RoomPlan this room →	195 sq ft18 m²	8 ft2.4 m	—	—	—	19	6	—
DearbornPlan this room →	240 sq ft22 m²	—	—	—	—	—	8	—
Executive BoardroomPlan this room →	1,280 sq ft119 m²	9.5 ft2.9 m	60	60	36	54	24	27
Grand BallroomPlan this room →	8,436 sq ft784 m²	17.1 ft5.2 m	700	900	498	1,000	—	—
Grand CourtPlan this room →	4,592 sq ft427 m²	10.8 ft3.3 m	—	—	—	700	—	—
Grant ParkPlan this room →	600 sq ft56 m²	8.1 ft2.5 m	50	50	24	69	24	23
Jackson ParkPlan this room →	817 sq ft76 m²	8.9 ft2.7 m	50	80	36	84	36	34
Lincoln ParkPlan this room →	600 sq ft56 m²	8.1 ft2.5 m	50	50	24	62	24	23
Promenade BallroomPlan this room →	3,569 sq ft332 m²	9.7 ft3 m	280	203	162	400	32	—
RiverfrontPlan this room →	5,220 sq ft485 m²	12 ft3.7 m	140	150	84	200	54	57
Rogers ParkPlan this room →	440 sq ft41 m²	8.1 ft2.5 m	30	32	18	42	15	17
Washington ParkPlan this room →	440 sq ft41 m²	8.1 ft2.5 m	30	32	18	42	15	17

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 The Westin Chicago River North?

The Westin Chicago River North has 14 rooms. The largest space is Grand Ballroom, 8,436 sq ft (111 × 76 ft). Every room's dimensions and seating capacity by setup are listed on this page. The Westin Chicago River North's own floor plans are published on its website, linked from this page.

How many event rooms does The Westin Chicago River North have?

The Westin Chicago River North has 14 rooms.

What is the largest space at The Westin Chicago River North?

Grand Ballroom, 8,436 sq ft: 111 × 76 ft, 700 banquet / 900 theater.

How many people can The Westin Chicago River North seat for a banquet?

Up to 700 in Grand Ballroom. The next largest room, Promenade Ballroom, seats 280.

What is the ceiling height at The Westin Chicago River North?

The highest ceiling is 17.1 ft, in Grand Ballroom.

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