Illinois deer research / St. Clair County
St. Clair County, Illinois Deer Hunting Research
Southern IL region. FDR Deer Herd Index 41.4, ranked #79 of 102 Illinois counties. Built from IDNR public harvest records and the Trophy Index.
C - Above AverageWhat drives the St. Clair County index
Five weighted components, each scored 0–100 against all Illinois counties.
Trophy Index
72↓ out of 100. How this county ranks for trophy bucks against every county we cover. 100 is the top. Ranked per acre of bow-huntable land (10 m estimate).
2005–2024 harvest trend
| Season | Archery | Firearm | Total |
|---|---|---|---|
| 2024 | 830 | 882 | 1,712 |
| 2023 | 876 | 820 | 1,696 |
| 2022 | 856 | 833 | 1,689 |
| 2021 | 811 | 736 | 1,547 |
| 2020 | 885 | 771 | 1,656 |
| 2019 | 748 | 695 | 1,443 |
| 2018 | 679 | 749 | 1,428 |
| 2017 | 616 | 730 | 1,346 |
| 2016 | 530 | 707 | 1,237 |
| 2015 | 605 | 801 | 1,406 |
| 2014 | 519 | 672 | 1,191 |
| 2013 | 582 | 791 | 1,373 |
| 2012 | 618 | 1,080 | 1,698 |
| 2011 | 591 | 1,146 | 1,737 |
| 2010 | 648 | 1,073 | 1,721 |
| 2009 | 712 | 1,117 | 1,829 |
| 2008 | 705 | 1,111 | 1,816 |
| 2007 | 642 | 1,293 | 1,935 |
| 2006 | 753 | 1,308 | 2,061 |
| 2005 | 753 | 1,370 | 2,123 |
Totals are IDNR's all-season county harvest; firearm includes the youth, muzzleloader and late-winter seasons. Source: Hunt Illinois county deer harvest. Buck density: St. Clair County averages 1.63 adult bucks harvested per 1,000 huntable acres (2005-2024).
See full St. Clair County harvest charts →
Harvest by sex
IDNR records each harvested deer by sex. In 2024, St. Clair County ran 1,028 bucks (males) and 684 does (females): 60% bucks.
| Season | Bucks (M) | Does (F) | Total | % bucks |
|---|---|---|---|---|
| 2024 | 1,028 | 684 | 1,712 | 60% |
| 2023 | 1,053 | 643 | 1,696 | 62.1% |
| 2022 | 995 | 694 | 1,689 | 58.9% |
| 2021 | 924 | 623 | 1,547 | 59.7% |
| 2020 | 973 | 683 | 1,656 | 58.8% |
| 2019 | 831 | 612 | 1,443 | 57.6% |
| 2018 | 858 | 570 | 1,428 | 60.1% |
| 2017 | 806 | 540 | 1,346 | 59.9% |
| 2016 | 715 | 522 | 1,237 | 57.8% |
| 2015 | 814 | 592 | 1,406 | 57.9% |
| 2014 | 676 | 515 | 1,191 | 56.8% |
| 2013 | 710 | 663 | 1,373 | 51.7% |
| 2012 | 908 | 790 | 1,698 | 53.5% |
| 2011 | 852 | 885 | 1,737 | 49.1% |
| 2010 | 890 | 831 | 1,721 | 51.7% |
| 2009 | 909 | 920 | 1,829 | 49.7% |
| 2008 | 936 | 880 | 1,816 | 51.5% |
| 2007 | 1,047 | 888 | 1,935 | 54.1% |
| 2006 | 1,137 | 924 | 2,061 | 55.2% |
| 2005 | 1,180 | 943 | 2,123 | 55.6% |
See full St. Clair County sex-composition chart →
Age structure
IDNR classifies each deer as adult, yearling (1.5-yr), or fawn. In 2024, St. Clair County ran 67.3% adult, 22% yearling, and 10.6% fawn. A higher adult share points to a more mature age structure.
| Season | Adult | Yearling | Fawn | Total |
|---|---|---|---|---|
| 2024 | 1,153 | 377 | 182 | 1,712 |
| 2023 | 1,105 | 415 | 176 | 1,696 |
| 2022 | 1,085 | 382 | 222 | 1,689 |
| 2021 | 981 | 359 | 207 | 1,547 |
| 2020 | 1,079 | 384 | 193 | 1,656 |
| 2019 | 922 | 350 | 171 | 1,443 |
| 2018 | 912 | 362 | 154 | 1,428 |
| 2017 | 794 | 354 | 198 | 1,346 |
| 2016 | 774 | 281 | 182 | 1,237 |
| 2015 | 822 | 378 | 206 | 1,406 |
| 2014 | 719 | 277 | 195 | 1,191 |
| 2013 | 807 | 288 | 278 | 1,373 |
| 2012 | 981 | 359 | 358 | 1,698 |
| 2011 | 1,043 | 370 | 324 | 1,737 |
| 2010 | 1,007 | 351 | 363 | 1,721 |
| 2009 | 1,149 | 335 | 345 | 1,829 |
| 2008 | 1,135 | 376 | 305 | 1,816 |
| 2007 | 1,136 | 406 | 393 | 1,935 |
| 2006 | 1,198 | 421 | 442 | 2,061 |
| 2005 | 1,211 | 398 | 511 | 2,120 |
Age class is IDNR's field classification at check-in, not a lab-aged tooth-wear cohort; treat it as a directional maturity signal.
See full St. Clair County composition charts →
Seasons & access
| Season | Method | Dates | Tags |
|---|---|---|---|
| Archery · Oct 1 to mid-Jan | archery | 2026-10-01 → 2027-01-17 | otc |
| Firearm · 1st + 2nd Shotgun Season | firearm | 2026-11-20 → 2026-12-06 | otc |
| Muzzleloader · December | muzzleloader | 2026-12-11 → 2026-12-13 | otc |
Bow-huntable land, public and private: 237,562 acres (10 m estimate). Verify current season dates, permits, and site-specific rules with IDNR before hunting.
Where to hunt public in St. Clair County
Full list on the Illinois public hunting land directory.
See St. Clair County on the map
Parcels with owner & acreage, public hunting land with regs, access points, leaf-off imagery, and this research, together on one hunting map.
Nearby counties
Frequently asked questions
Is St. Clair County, Illinois good for deer hunting?
St. Clair County scores 41.4 of 100 on the FDR Deer Herd Index (C - Above Average), ranked #79 of 102 Illinois counties. The index is built from IDNR public harvest records, habitat, herd quality, momentum, and trophy history (the Trophy Index).
What is the Trophy Index for St. Clair County?
St. Clair County has a Trophy Index of 72 out of 100. How this county ranks for trophy bucks against every county we cover. 100 is the top. Ranked per acre of bow-huntable land (10 m estimate).
Is there public hunting land in St. Clair County, Illinois?
Yes: the Illinois public hunting land directory lists 7 sites in St. Clair County, including Kaskaskia River State Fish and Wildlife Area, Peabody River King State Fish and Wildlife Area, Frank Holten State Park. Always verify current site regulations and permit requirements before hunting.
How many deer were harvested in St. Clair County last season?
IDNR records show 1,712 deer harvested in St. Clair County in 2024, the most recent reported season.