The state of Illinois has adopted numerous symbols over time.
| width=12% | Type | width=21% | Symbol | width=49% class=unsortable | Description | width=8% | Adopted | width=10% class=unsortable | Image | width=5% class="unsortable" | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Flag | Flag of Illinois | 1969 | |||||||||
| Centennial flag | Centennial Flag of Illinois | 1918 | |||||||||
| Sesquicentennial flag | Sesquicentennial Flag of Illinois | 1968 | |||||||||
| Seal | Seal of Illinois | 1867 |
| width=12% | Type | width=21% | Symbol | width=49% class=unsortable | Description | width=10% class=unsortable | Image | width=5% class="unsortable" | Law[1] | width=8% | Adopted |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Amphibian | Eastern tiger salamander (Ambystoma tigrinum) | 5 ILCS 460/85 | 2005[2] | ||||||||
| Animal | White-tailed deer (Odocoileus virginianus) | 5 ILCS 460/45 | 1982 | ||||||||
| Artifact | Pirogue | 5 ILCS 460/63 | 2017 | ||||||||
| Bird | Northern cardinal (Cardinalis cardinalis) | 5 ILCS 460/10 | 1929 | ||||||||
| Exercise | Cycling | 5 ILCS 460/67 | 2018 | ||||||||
| Fish | Bluegill (Lepomis macrochirus) | 5 ILCS 460/50 | 1986 | ||||||||
| Flower | Violet (Viola spp.) | 5 ILCS 460/40 | 1908 | ||||||||
| Folk dance | Square dance | 5 ILCS 460/65 | 1990[3] | ||||||||
| Fruit | Gold Rush Apple (Malus × domestica) | 5 ILCS 460/57 | 2007 | ||||||||
| Fossil | Tully monster (Tullimonstrum gregarium) | 5 ILCS 460/60 | 1989 | ||||||||
| Grain | Corn | 5 ILCS 460/56.5 | 2018[4] | ||||||||
| Horse | Thoroughbred horse (Equus caballus) | 5 ILCS 460/90 | 2006 | ||||||||
| Insect | Monarch butterfly (Danaus plexippus) | 5 ILCS 460/15 | 1975 | ||||||||
| Mineral | Fluorite (Calcium fluoride) | 5 ILCS 460/25 | 1965 | ||||||||
| Motto | "State sovereignty, national union" | 5 ILCS 460/5[5] | 1818 | ||||||||
| Nickname | "The Prairie State" | Traditional | |||||||||
| Pet | Shelter dogs and shelter cats | 5 ILCS 460/47 | 2017 | ||||||||
| Pie | Pumpkin pie | 5 ILCS 460/100 | 2016 | ||||||||
| Prairie grass | Big bluestem (Andropogon gerardii) | 5 ILCS 460/55 | 1989 | ||||||||
| Reptile | Painted turtle (Chrysemys picta) | 5 ILCS 460/90 | 2006 | ||||||||
| Rock | Dolostone | 2022[6] | |||||||||
| Slogan | "Land of Lincoln" | 5 ILCS 460/30 | 1955 | ||||||||
| Snackfood | Popcorn | 5 ILCS 460/80 | 2004 | ||||||||
| Snake | Eastern milk snake | 5 ILCS 460/87 | 2022[7] | ||||||||
| Soil | Drummer silty clay loam (mesic Typic Endoaquoll) | 5 ILCS 460/75 | 2001 | ||||||||
| Song | "Illinois" | 5 ILCS 460/35 | 1925[8] | ||||||||
| Tartan | Illinois Saint Andrew Society Tartan | 5 ILCS 460/95 | 2012 | ||||||||
| Theatre | The Great American People Show | 5 ILCS 460/70 | 1995 | ||||||||
| Tree | White oak (Quercus alba) (replaced "Native Oak" adopted in 1908) | 5 ILCS 460/40 | 1973 | ||||||||
| Vegetable | Sweet corn | 5 ILCS 460/56 | 2015 | ||||||||
| Wildflower | Milkweed (Asclepias spp.) | 5 ILCS 460/43 | 2017 | ||||||||