Will County
Mark Koser J in 2025 was employed at Will County and had an annual salary of $99,810, according to public records. This salary was 38 percent higher than the average and 49 percent higher than the median salary in Will County.
Public records show Mark Koser J working for Will County from 2015 to 2025.
Since 2016, the salary has increased by $38,032, a total rise of 61.6 percent.
| Year | 2025 |
| Full Name | Mark Koser J |
| Job Title | N/A |
| State | Illinois |
| Employer | Will County |
| Annual Wage | $99,810 |
| Pay Plan |
*Information may include where available: salary, bonuses, benefits, retirement contributions, pensions, and other financial data.
| Employer Name | Will County |
| Year | 2025 |
| Number of Employees | 2,502 |
| Average Annual Wage | $72,371 |
| Median Annual Wage | $66,948 |
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Annette Parker (2025)Will County | View Person Details |
Timothy Brophy M (2025)Will County | View Person Details |
Jennifer Bertino-Tarrant L (2025)Will County | View Person Details |
Kevin Blackburn D (2025)Will County | View Person Details |
Karen Stukel A (2025)Will County | View Person Details |
Harriet Walker B (2025)Will County | View Person Details |
David Cantone P (2025)Will County | View Person Details |
Carly Malecki M (2025)Will County | View Person Details |
Michael Dinovo C (2025)Will County | View Person Details |