Illinois Number of Private Business Establishments in the NAICS 541511 Custom computer programming 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 7,708 number of private business establishments in the NAICS 541511 Custom computer programming services Industry. Among all Illinois counties, Cook had the highest number of private business establishments (1,709), followed by DuPage (553), and Lake (276).

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).

See this for other quarters:

Illinois Number of Private Business Establishments in the NAICS 541511 Custom computer programming services Industry By County in 2025 Q3

0 of 0

County	Number of Business Establishments
Adams	5
Bond	1
Boone	6
Champaign	57
Christian	1
Clinton	2
Cook	1709
DeKalb	8
DuPage	553
Edwards	1
Effingham	2
Ford	1
Fulton	1
Grundy	4
Hamilton	1
Henry	2
Jackson	7
Jefferson	3
Jo Daviess	1
Kane	120
Kankakee	4
Kendall	28
Knox	1
Lake	276
LaSalle	10
Lee	1
Logan	1
McDonough	1
McHenry	52
McLean	38
Macon	4
Madison	28
Menard	1
Monroe	7
Morgan	1
Ogle	2
Peoria	37
Piatt	2
Rock Island	19
St. Clair	51
Sangamon	61
Shelby	1
Stephenson	4
Tazewell	19
Union	1
Vermilion	1
Wayne	1
Whiteside	1
Will	183
Williamson	4
Winnebago	19