Illinois deer research / Rock Island County
Rock Island County, Illinois Deer Hunting Research
Central IL region. FDR Deer Herd Index 36.5, ranked #91 of 102 Illinois counties. Built from IDNR public harvest records and the Buck Index.
D - AverageWhat drives the Rock Island County index
The FDR Index combines five measured parts into one 0 to 100 score. Each part is scored 0–100 against all Illinois counties.
Buck Index
90→ out of 100. How this county ranks on the Buck Index against every county we cover. 100 is the top. Land is measured as what a hunter can actually hunt (10 m estimate).
Hunting pressure
Pressure Index 4.9 / 10 (Middle). About 5.5 deer hunters per square mile of huntable land: 49th percentile of 3,051 rated counties in 48 states, 72nd percentile within Illinois. How often deer run into people, 0 to 10 on one scale across every rated state; 10 is the most crowded county in the country.
Modeled. Illinois does not publish hunter numbers by county, so FDR places this county within Illinois from deer harvest per huntable acre (2020 to 2024 seasons) and population density. The model was checked against agency hunter counts in Michigan, Indiana and Missouri, and against agency hunter surveys by hunting unit in 10 more states. It estimates crowding; it is not a hunter count. Illinois averages 5.2 deer hunters per square mile of huntable land (state wildlife agency count, 2023-24 season).
2005–2024 harvest trend
| Season | Archery | Firearm | Total |
|---|---|---|---|
| 2024 | 670 | 843 | 1,513 |
| 2023 | 605 | 814 | 1,419 |
| 2022 | 622 | 740 | 1,362 |
| 2021 | 609 | 701 | 1,310 |
| 2020 | 678 | 853 | 1,531 |
| 2019 | 682 | 693 | 1,375 |
| 2018 | 716 | 943 | 1,659 |
| 2017 | 695 | 839 | 1,534 |
| 2016 | 653 | 950 | 1,603 |
| 2015 | 715 | 1,003 | 1,718 |
| 2014 | 690 | 923 | 1,613 |
| 2013 | 671 | 933 | 1,604 |
| 2012 | 588 | 1,198 | 1,786 |
| 2011 | 593 | 1,093 | 1,686 |
| 2010 | 610 | 1,118 | 1,728 |
| 2009 | 674 | 1,252 | 1,926 |
| 2008 | 602 | 1,188 | 1,790 |
| 2007 | 659 | 1,187 | 1,846 |
| 2006 | 662 | 1,207 | 1,869 |
| 2005 | 614 | 1,081 | 1,695 |
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: Rock Island County averages 2.49 adult bucks harvested per 1,000 huntable acres (2005-2024).
See full Rock Island County harvest charts →
Harvest by sex
IDNR records each harvested deer by sex. In 2024, Rock Island County ran 842 bucks (males) and 671 does (females): 55.7% bucks.
| Season | Bucks (M) | Does (F) | Total | % bucks |
|---|---|---|---|---|
| 2024 | 842 | 671 | 1,513 | 55.7% |
| 2023 | 820 | 599 | 1,419 | 57.8% |
| 2022 | 739 | 623 | 1,362 | 54.3% |
| 2021 | 709 | 601 | 1,310 | 54.1% |
| 2020 | 802 | 729 | 1,531 | 52.4% |
| 2019 | 734 | 641 | 1,375 | 53.4% |
| 2018 | 895 | 764 | 1,659 | 53.9% |
| 2017 | 839 | 695 | 1,534 | 54.7% |
| 2016 | 859 | 744 | 1,603 | 53.6% |
| 2015 | 845 | 873 | 1,718 | 49.2% |
| 2014 | 810 | 803 | 1,613 | 50.2% |
| 2013 | 774 | 830 | 1,604 | 48.3% |
| 2012 | 920 | 866 | 1,786 | 51.5% |
| 2011 | 839 | 847 | 1,686 | 49.8% |
| 2010 | 816 | 912 | 1,728 | 47.2% |
| 2009 | 944 | 982 | 1,926 | 49% |
| 2008 | 853 | 937 | 1,790 | 47.7% |
| 2007 | 984 | 862 | 1,846 | 53.3% |
| 2006 | 989 | 880 | 1,869 | 52.9% |
| 2005 | 950 | 745 | 1,695 | 56% |
See full Rock Island County sex-composition chart →
Age structure
IDNR classifies each deer as adult, yearling (1.5-yr), or fawn. In 2024, Rock Island County ran 67% adult, 19.4% yearling, and 13.6% fawn. A higher adult share points to a more mature age structure.
| Season | Adult | Yearling | Fawn | Total |
|---|---|---|---|---|
| 2024 | 1,013 | 294 | 206 | 1,513 |
| 2023 | 946 | 268 | 205 | 1,419 |
| 2022 | 867 | 259 | 236 | 1,362 |
| 2021 | 838 | 240 | 232 | 1,310 |
| 2020 | 1,006 | 263 | 262 | 1,531 |
| 2019 | 882 | 248 | 245 | 1,375 |
| 2018 | 1,026 | 320 | 313 | 1,659 |
| 2017 | 957 | 315 | 262 | 1,534 |
| 2016 | 975 | 292 | 336 | 1,603 |
| 2015 | 1,046 | 300 | 372 | 1,718 |
| 2014 | 955 | 307 | 351 | 1,613 |
| 2013 | 947 | 292 | 365 | 1,604 |
| 2012 | 1,074 | 279 | 433 | 1,786 |
| 2011 | 1,008 | 287 | 391 | 1,686 |
| 2010 | 1,037 | 265 | 426 | 1,728 |
| 2009 | 1,093 | 316 | 517 | 1,926 |
| 2008 | 1,066 | 290 | 434 | 1,790 |
| 2007 | 1,067 | 309 | 470 | 1,846 |
| 2006 | 1,056 | 348 | 465 | 1,869 |
| 2005 | 972 | 283 | 438 | 1,693 |
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 Rock Island 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: 143,181 acres (10 m estimate). Verify current season dates, permits, and site-specific rules with IDNR before hunting.
Where to hunt public in Rock Island County
Full list on the Illinois public hunting land directory.
See Rock Island 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 Rock Island County, Illinois good for deer hunting?
Rock Island County scores 36.5 of 100 on the FDR Deer Herd Index (D - Average), ranked #91 of 102 Illinois counties. The index is built from IDNR public harvest records, habitat, herd quality, momentum, and the Buck Index.
What is the Buck Index for Rock Island County?
Rock Island County has a Buck Index of 90 out of 100. How this county ranks on the Buck Index against every county we cover. 100 is the top. Land is measured as what a hunter can actually hunt (10 m estimate).
Is there public hunting land in Rock Island County, Illinois?
Yes: the Illinois public hunting land directory lists 8 sites in Rock Island County, including Upper Mississippi River National Wildlife And Fish Refuge, Elton E. Fawks Bald Eagle Refuge State Natural Area, Mississippi River - Cordova. Always verify current site regulations and permit requirements before hunting.
How many deer were harvested in Rock Island County last season?
IDNR records show 1,513 deer harvested in Rock Island County in 2024, the most recent reported season.
Cite this
Fully Drawn Research. "Rock Island County, Illinois deer hunting research." County page. https://www.fullydrawnresearch.ai/research/il/rock-island. Accessed Nov 1, 2026.
Data and charts from this page are free to use with attribution. See the Content Lab.