Jefferson County
Jonathan Olszewski in 2025 was employed at Jefferson County and had an annual salary of $164,647, according to public records. This salary was 213 percent higher than the average and 193 percent higher than the median salary in Jefferson County.
Public records show Jonathan Olszewski working for Jefferson County from 2023 to 2025.
According to the public records employee's salary increased by $8,754 from 2024 to 2025, which is a 5.6 percent rise. Since 2023, the salary has increased by $20,587, a total rise of 14.3 percent.
| Year | 2025 |
| Full Name | Jonathan Olszewski |
| Job Title | N/A |
| State | Wisconsin |
| Employer | Jefferson County |
| Annual Wage | $164,647 |
| Pay Plan |
*Information may include where available: salary, bonuses, benefits, retirement contributions, pensions, and other financial data.
| Employer Name | Jefferson County |
| Year | 2025 |
| Number of Employees | 803 |
| Average Annual Wage | $52,523 |
| Median Annual Wage | $56,161 |
Jonathan Olszewski (2024) | View Person Details |
Jonathan Olszewski (2023) | View Person Details |
Brent Ruehlow (2025)Jefferson County | View Person Details |
Michael Luckey (2025)Jefferson County | View Person Details |
Terri Palm-Kostroski (2025)Jefferson County | View Person Details |
Heather Novotny (2025)Jefferson County | View Person Details |
John Rageth (2025)Jefferson County | View Person Details |
Marc Devries (2025)Jefferson County | View Person Details |
Jennifer Weber (2025)Jefferson County | View Person Details |
Kyle Zande Vande (2025)Jefferson County | View Person Details |
Gregory Jansen (2025)Jefferson County | View Person Details |
Zachary Koch (2025)Jefferson County | View Person Details |