IL Natural History Survey
Data received June 2026 • FT/PT status not provided. Hire dates are most recent hire date.
Full-time employees
281
Median pay
$54,816
Average pay
$55,425
IL Natural History Survey
Employees by pay range
Note: To learn how the Post-Dispatch calculates figures such as the number of full-time employees or median pay, as well as other important explanations and caveats, please see the About page.
Employees
Click on one of the headers below to sort a column. Data shown reflects actual gross pay for 2025, except where noted otherwise.
| Position | Gross pay | Date hired | |
|---|---|---|---|
| Townsend, Katherine Joy | Academic Hourly - Research | $26,536 | May 13, 2024 |
| Trivellone, Valeria | Assistant Res Sci, Vector Ecol | $63,321 | Jan. 1, 2023 |
| Tucker, Stefan Roy | Assistant Res Sci, Lg Rvr Fish Ecol | $54,752 | Aug. 28, 2023 |
| Turner, Joshua David | Academic Hourly - Research | $30,976 | Jan. 13, 2025 |
| Tuten, Holly C | Assoc Res Sci, Vector Ecol | $32,664 | Oct. 16, 2019 |
| Tweddale, Tari Ann | Assoc Res Sci, GIS | $87,460 | July 1, 2008 |
| Twellmann, Curtis L | Sci Spec, Regional R3 Planner | $53,217 | Nov. 23, 2020 |
| Ulaszek, Eric Frank | Assoc Res Sci, Botany | $44,963 | July 7, 2025 |
| Vandenberg, Alexis Lee | Academic Hourly - Research | $23,246 | June 2, 2025 |
| Vaske, Jerry J | Academic Hourly - Research | $43,200 | June 1, 2021 |
| Viking, Savannah Marie | Academic Hourly - Research | $21,056 | May 27, 2025 |
| Villazan Perez Girones, Sara P | Sci Spec, Life Sci | $52,460 | Sept. 1, 2023 |
| Vinavich, Kaiden Parker | Grad Res Assistant | $30,400 | May 26, 2023 |
| Vinette, Zachary Christian | Academic Hourly - Research | $37,726 | March 25, 2024 |
| Vinsel, Rachel M | Sr Sci Spec, Malacology | $58,828 | March 16, 2015 |
| Walberg, Eric Michael | Assistant Res Sci, Human Dim Res | $60,381 | May 28, 2019 |
| Ward, Abbigail Frances | Sci Spec, Field Sci | $47,538 | Jan. 20, 2021 |
| Warner, Bethany H | Grad Res Assistant | $25,880 | Nov. 17, 2022 |
| Welch, Nicole Jarin | Academic Hourly - Research | $35,407 | Feb. 16, 2024 |
| Weyers, David Philip | Assistant Res Sci, Large River Ecol | $53,868 | June 1, 2022 |
| Whitten Harris, Andrya L | Assoc Res Sci, Lg Rvr Fish Eco | $65,015 | July 25, 2016 |
| Wiesbrook, Scott M | Assoc Res Sci, Wetland Soils | $83,493 | July 1, 2008 |
| Williams, Brent Daniel | Assistant Res Sci, Human Dim | $60,381 | Aug. 16, 2022 |
| Williams, Jesse | Assistant Res Sci, Lg Rvr Fish Ecol | $53,629 | May 6, 2019 |
| Yan, Jiayue | Assistant Res Sci, Mosquito Bio | $63,540 | April 23, 2018 |
| Yff, David John | Assistant Res Sci, Aquatic Ecol | $48,265 | Aug. 16, 2022 |
| Yoder, Matthew Jon | Assoc Res Sci, Biodvsty Info | $117,605 | March 1, 2012 |
| Zaya, David Nouya | Assoc Res Sci, Botany | $88,273 | July 1, 2013 |
| Zercher, Bradley | Sr Sci Spec, GIS | $64,165 | July 1, 2008 |
| Zilinger, Amber Mae | Grad Res Assistant | $28,928 | Nov. 16, 2023 |
| Zinnen, Jack Henry | Assistant Res Sci, Wtlnd Plant Ecol | $60,813 | Aug. 22, 2022 |
Note: To learn how the Post-Dispatch calculates figures such as the number of full-time employees or median pay, as well as other important explanations and caveats, please see the About page.