Engineering & architecture in Illinois
2,485 engineering & architecture listed across 320 cities in Illinois.
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Quick answer
USA Business Search lists 2,485 engineering & architecture in Illinois. The most are in Chicago (798), Naperville (55), Rockford (43).
Updated October 2026Engineering & architecture by city
Chicago (798)Naperville (55)Rockford (43)Springfield (42)Schaumburg (38)Downers Grove (36)Northbrook (36)Peoria (35)Evanston (35)Lisle (33)Champaign (28)Elk Grove Village (28)Arlington Heights (27)Oak Park (27)Aurora (24)Oak Brook (24)St. Charles (23)Elgin (22)Elmhurst (22)Itasca (21)Lombard (20)Des Plaines (18)Crystal Lake (17)Lake Forest (17)Decatur (14)Wheaton (14)Frankfort (14)Rolling Meadows (14)Hinsdale (14)Joliet (13)Bloomington (13)Plainfield (13)Park Ridge (13)Palatine (12)Libertyville (12)Geneva (12)Deerfield (12)Skokie (11)Highland Park (11)Mount Prospect (11)Buffalo Grove (11)Lake Zurich (11)Glenview (10)Belleville (10)Addison (10)Barrington (10)Hoffman Estates (10)Burr Ridge (10)Rosemont (10)Moline (9)Bolingbrook (9)Mokena (9)Romeoville (9)Orland Park (8)Waukegan (8)Edwardsville (8)Batavia (8)Rock Island (8)Oakbrook Terrace (8)Wauconda (8)Willowbrook (8)Lincolnshire (8)Gurnee (7)Urbana (7)Glen Ellyn (7)Wheeling (7)Carol Stream (7)Grayslake (7)La Grange (7)Woodridge (7)Warrenville (7)Tinley Park (6)McHenry (6)Normal (6)Mundelein (6)Loves Park (6)Freeport (6)Villa Park (6)East Peoria (6)Lincolnwood (6)Morton (6)Lake Bluff (6)Quincy (5)Woodstock (5)Kankakee (5)Vernon Hills (5)Collinsville (5)Bensenville (5)Roselle (5)Franklin Park (5)Northfield (5)Columbia (5)Countryside (5)O Fallon (5)Niles (4)Marion (4)Dekalb (4)West Chicago (4)Jacksonville (4)Mattoon (4)Yorkville (4)Fairview Heights (4)Dixon (4)Bartlett (4)Bridgeview (4)Alsip (4)South Elgin (4)Peru (4)Shorewood (4)Machesney Park (4)Homer Glen (4)Roscoe (4)East Moline (4)Winnetka (4)Lake Villa (4)Herrin (4)East Dundee (4)Western Springs (4)Madison (4)Oak Lawn (3)
Well-documented engineering & architecture in Illinois
A sample of listings with a street address, phone number and website, one per city.
Charles Vincent George Architects
Richard L Johnson Associates
Kwik-Wall
Mercury Products Corporation
Downtown Downers Grove
SAS Architects and Planners
Maurer-Stutz, Inc.
Kipnis Architecture + Planning
Associated Engineering & Technology, Inc
Reifsteck Reid & Company Architects
Sears Heating And Air Conditioning
How to choose an engineering firm in Illinois
- Ask who will actually do the work and how often you'll hear from them.
- Get the scope, price and timeline in writing.
- Ask for two references from clients like you.
Common questions
How many engineering & architecture are listed in Illinois?
USA Business Search lists 2,485 engineering & architecture in Illinois, in 320 cities and towns.
Which Illinois cities have the most engineering & architecture?
Chicago (798), Naperville (55), Rockford (43), Springfield (42), Schaumburg (38).
How do I verify a Illinois business?
Use the state's official business search and licensing boards, linked in our Illinois business lookup guide.