Are There Scorpions in Illinois?
No, scorpions are not established in Illinois. These arachnids are restricted to warm, dry regions of the southwestern United States and Hawaii. Illinois has a temperate climate with cold winters that are unsuitable for scorpion survival. This guide provides information about scorpions for travelers to help with identification and safety.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 22, 2026.
Western Forest Scorpion · Seth CC BY
Black Hairy Scorpion · Public domain CC0
Southern Devil Scorpion · Alan Rockefeller CC BY
- 119
- GBIF records
Yes, scorpions are in Illinois. Next you'll want:
No, scorpions are not established in Illinois. These arachnids are restricted to warm, dry regions of the southwestern United States and Hawaii. Illinois has a temperate climate with cold winters that are unsuitable for scorpion survival. This guide provides information about scorpions for travelers to help with identification and safety.
Are they in Illinois?
Scorpions are not found in Illinois. These arachnids are established only in warm, arid environments, primarily in the southwestern United States. The nearest scorpion populations occur in Arizona, New Mexico, and parts of Texas, which are over 1,000 miles away from Illinois. The state's continental climate, with cold winters, moderate to abundant precipitation, and seasonal temperature fluctuations, does not support scorpion survival. Illinois winters regularly drop below freezing, which is lethal to all North American scorpion species. The humidity typical of the state, particularly near the Mississippi and Illinois Rivers and throughout the eastern portions, further makes Illinois unsuitable for scorpions. Even in nearby states to the south or west, scorpions are absent or extremely rare. If you encounter a scorpion in Illinois, it would have to have arrived from outside the state, such as an escaped pet or a hitchhiker in shipped materials. For documentation aboutScorpion in Illinois, regional wildlife agencies confirm no established populations exist.
How dangerous is it?
Understanding scorpion danger is valuable if you travel to regions where they are established. Scorpion sting danger varies by species. Most North American scorpions cause pain and local swelling comparable to a bee or wasp sting. The Arizona bark scorpion is the most medically significant scorpion in North America. Its sting can cause numbness, tingling, and in rare cases mild muscle twitching, particularly in young children, elderly individuals, or people with compromised health. However, severe medical complications are uncommon, and deaths are extremely rare even from this species, especially when prompt medical care is available. Of the approximately 8,000 scorpion stings reported to US poison centers annually, serious outcomes are limited to a very small fraction. Stings are entirely defensive. Scorpions do not attack people and will only sting if squeezed, stepped on, or otherwise threatened. Understanding this behavior helps you stay safe if you travel to scorpion-inhabited regions.
How to recognize one
Scorpions have a highly distinctive body structure that makes identification relatively easy. Adult scorpions typically measure 2 to 8 inches in length, though size varies by species. Look for eight jointed legs, two prominent pincers or claws at the front of the body resembling small lobster claws, and a curved tail held over the back with a stinger at the very tip. The body is generally brown, tan, reddish, or yellowish. The tail is segmented and characteristic curved shape is their most recognizable feature. Most scorpions have a somewhat flattened body. Their body structure is entirely different from spiders, which lack the prominent pincers and curved stinger tail. During the day, scorpions hide in dark spaces like woodpiles, under rocks, inside shoes, or in crevices. At night they emerge to hunt insects. When learning aboutIllinois wildlife, you will find that the state's actual arthropods have quite different appearances.
What to do if you are stung
If you are stung by a scorpion, the first priority is to stay calm. The vast majority of stings cause only local pain and resolve without medical intervention. Wash the sting area immediately with soap and water. Remove any rings or tight bracelets from the affected area to prevent circulation problems if swelling develops. Elevate the affected limb above heart level if possible and keep it immobilized, as movement increases pain. Apply a cool cloth to reduce discomfort, though do not apply ice directly to skin. Over-the-counter pain relievers such as ibuprofen or acetaminophen can help manage pain. Most stings resolve completely within 24 hours. If you experience any symptoms beyond local pain and swelling, such as numbness spreading from the sting site, muscle weakness, difficulty swallowing, or breathing changes, seek medical attention immediately. This is general information, not medical advice; if you are stung, call Poison Control at 1-800-222-1222, or 911 if symptoms are severe. When in doubt, contact medical professionals.
How to prevent encounters
Since scorpions do not live in Illinois, prevention efforts focus on what to do if you travel to scorpion-prone regions. When packing for travel to the Southwest, shake out all shoes, socks, clothing, and gear before use. Wear closed-toe shoes and long pants when hiking or camping in scorpion territory. Keep a flashlight handy when outdoors at night in scorpion regions, as these arachnids glow faintly under ultraviolet light and are most active after dark. Be cautious when moving rocks, logs, or firewood. Never reach into dark spaces without looking first or using a light. When camping, store clothing and bedding in sealed containers or keep them elevated off the ground. Before entering sleeping areas in older buildings, check for scorpions. Seal gaps and cracks in accommodations. If you encounter an insect infestation where you are staying, request a change of room, as scorpions are attracted to places with abundant insects. Ourwildlife guidesinclude information on regional safety practices if you are traveling to the Southwest or other scorpion-bearing areas.
Where in Illinois and when
Scorpions do not occur anywhere in Illinois. Their established North American range is limited to warm, dry regions of the southwestern United States. The primary range includes most of Arizona, New Mexico, southern California, southern Nevada, and southwestern Utah. Additional populations exist in parts of Oklahoma, southern Kansas, southern Arkansas, and extreme south-central Missouri. These arachnids require consistently warm temperatures and cannot survive Illinois's cold winters, which regularly drop below freezing. The state's geography, including forests, prairies, and river valleys, provides a climate far too cool and wet for scorpion survival. Illinois's abundant surface water, moderate to high annual precipitation, and seasonal freeze-thaw cycles are entirely incompatible with scorpion biology. From the urban areas of Chicago and St. Louis's suburbs to the rural farm areas and natural areas of southern Illinois, the state offers no suitable habitat. Learn more aboutwildlife in Illinoisto understand the actual native and introduced species found throughout the state.
Harmless lookalikes
Illinois has several arthropods that might remind someone of a scorpion, though none pose any sting risk. Wolf spiders, which are large and active hunters found across Illinois, might trigger concern due to their size and movement patterns, but they have no stinger and their body structure is entirely different. Cellar spiders, often found in dark corners of homes, have very long legs relative to body size and might seem unusual, but they are completely harmless. Harvestmen, sometimes called daddy longlegs, have thin legs and a rounded body and are often mistaken for spiders, but they bear no resemblance to scorpions once examined. Centipedes found in Illinois have numerous legs and sometimes seem threatening, but they have an entirely different body structure and no curved stinger tail. Ground beetles, particularly larger species, might cause momentary concern, but they are unmistakably different insects. If you find any arthropod in Illinois that concerns you, consulting a photo guide or contacting a local pest management professional will quickly confirm it is almost certainly harmless.
Frequently Asked Questions
Are scorpions deadly? No, most North American scorpions are not deadly. Even the Arizona bark scorpion, the most medically significant North American species, rarely causes death, and deaths are essentially nonexistent when medical care is available. Are scorpion stings common in Illinois? No, there are no scorpion stings in Illinois because scorpions do not live in the state. An sting here would require an escaped exotic pet or other non-native source, which is extraordinarily rare. What attracts scorpions to a house? In scorpion-prone regions, insects attract scorpions, as these arachnids are predators hunting for food. Controlling pest populations and sealing cracks reduces risk in those areas. In Illinois, this is not a practical concern. What should I do if I see one in Illinois? Inform a local wildlife agency or pest control professional, as this would be an extremely unusual occurrence worth documenting. If you are traveling in the Southwest and encounter one, simply leave it alone and maintain distance. For more information aboutIllinois wildlife, consult state wildlife resources and regional guides.
Plan your scorpion sighting in Illinois
119 verified scorpion records have been logged in Illinois, most recently in 2026. See the GBIF records.
Where to look in Illinois
- Lewis & Clark National Historic Trail · Wildlife Watching · Find hotels
- Lincoln Home National Historic Site · Wildlife Watching, Birdwatching · Find hotels
- Emmett Till and Mamie Till-Mobley National Monument · Find hotels
- Mormon Pioneer National Historic Trail · Find hotels
- New Philadelphia National Historic Site · Find hotels
- Pullman National Historical Park · Find hotels
Frequently asked questions
Are they in Illinois?+
Scorpions are not found in Illinois. These arachnids are established only in warm, arid environments, primarily in the southwestern United States. The nearest scorpion populations occur in Arizona, New Mexico, and parts of Texas, which are over 1,000 miles away from Illinois. The state's continental climate, with cold winters, moderate to abundant precipitation, and seasonal temperature fluctuations, does not support scorpion survival. Illinois winters regularly drop below freezing, which is lethal to all North American scorpion species. The humidity typical of the state, particularly near the Mississippi and Illinois Rivers and throughout the eastern portions, further makes Illinois unsuitable for scorpions. Even in nearby states to the south or west, scorpions are absent or extremely rare. If you encounter a scorpion in Illinois, it would have to have arrived from outside the state, such as an escaped pet or a hitchhiker in shipped materials. For documentation aboutScorpion in Illinois, regional wildlife agencies confirm no established populations exist.
How dangerous is it?+
Understanding scorpion danger is valuable if you travel to regions where they are established. Scorpion sting danger varies by species. Most North American scorpions cause pain and local swelling comparable to a bee or wasp sting. The Arizona bark scorpion is the most medically significant scorpion in North America. Its sting can cause numbness, tingling, and in rare cases mild muscle twitching, particularly in young children, elderly individuals, or people with compromised health. However, severe medical complications are uncommon, and deaths are extremely rare even from this species, especially when prompt medical care is available. Of the approximately 8,000 scorpion stings reported to US poison centers annually, serious outcomes are limited to a very small fraction. Stings are entirely defensive. Scorpions do not attack people and will only sting if squeezed, stepped on, or otherwise threatened. Understanding this behavior helps you stay safe if you travel to scorpion-inhabited regions.
More wildlife in Illinois