Illinois Number of Private Business Establishments in the NAICS 54151 Computer systems design and related services Industry By County in 2025 Q3 (QCEW)

Updated on April 2, 2026.

According to data from the US Bureau of Labor Statistics, in 2025 Q3, Illinois had 14,616 number of private business establishments in the NAICS 54151 Computer systems design and related services Industry. Among all Illinois counties, Cook had the highest number of private business establishments (3,482), followed by DuPage (1,239), and Lake (613).

The chart and table shows the number of business establishments for each county.

You can see similar information for other states, and for the United States.

You can see similar information for other industries.

Related Topics: Illinois BLS Topic List.

Data Source: US Bureau of Labor Statistics (QCEW).

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Illinois Number of Private Business Establishments in the NAICS 54151 Computer systems design and related services Industry By County in 2025 Q3

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County	Number of Business Establishments
Adams	11
Bond	3
Boone	9
Bureau	3
Cass	2
Champaign	93
Christian	4
Clinton	7
Coles	2
Cook	3482
DeKalb	15
Douglas	2
DuPage	1239
Edwards	1
Effingham	12
Fayette	1
Ford	2
Franklin	1
Fulton	3
Greene	1
Grundy	6
Hamilton	1
Hancock	1
Henry	5
Iroquois	2
Jackson	12
Jefferson	5
Jo Daviess	2
Kane	272
Kankakee	9
Kendall	54
Knox	2
Lake	613
LaSalle	15
Lawrence	1
Lee	5
Livingston	2
Logan	3
McDonough	3
McHenry	136
McLean	82
Macon	17
Macoupin	2
Madison	64
Marion	2
Marshall	1
Menard	1
Monroe	10
Montgomery	3
Morgan	3
Moultrie	3
Ogle	4
Peoria	66
Perry	1
Piatt	3
Randolph	1
Rock Island	35
St. Clair	117
Saline	1
Sangamon	128
Schuyler	1
Scott	1
Shelby	5
Stephenson	7
Tazewell	33
Union	1
Vermilion	4
Wabash	1
Wayne	2
White	2
Whiteside	3
Will	441
Williamson	6
Winnebago	44
Woodford	1