Are There Scorpions in Colorado?

No, scorpions are not established in Colorado. Despite the state's warm summers in lower elevations, Colorado's high altitude and seasonal cold temperatures make it unsuitable for scorpions. Most of Colorado sits above 3,000 feet elevation, and winter temperatures often drop well below freezing. Scorpions require the warmer, drier climates found in states like Arizona and New Mexico.

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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 photographed in Colorado

Western Forest Scorpion · Seth CC BY

Black Hairy Scorpion photographed in Colorado

Black Hairy Scorpion · Public domain CC0

Southern Devil Scorpion photographed in Colorado

Southern Devil Scorpion · Alan Rockefeller CC BY

Photos by iNaturalist observers, reused under the licence each observer chose.
Found in Colorado
8
species recorded
415
GBIF records
May, June, August
peak months

Yes, scorpions are in Colorado. Next you'll want:

Verified species, source iNaturalist

4 types of scorpions recorded in Colorado

4 scorpion species have a verified observation record in Colorado, each with at least 10 confirmed sightings. The full list, ranked by how often each is recorded, is below.

  • No openly licensed photo yet
    1

    Striped Bark Scorpion

    Centruroides vittatus

    294 records
  • No openly licensed photo yet
    2

    Northern Scorpion

    Paruroctonus boreus

    138 records
  • No openly licensed photo yet
    3

    Black Hairy Scorpion

    Hadrurus spadix

    12 records
  • No openly licensed photo yet
    4

    Russell's Scorpion

    Chihuahuanus russelli

    11 records

Plus 4 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations.

Real sighting data, source iNaturalist

500 verified observations on iNaturalist of scorpion have been recorded in Colorado, most often in May, June, August.

When scorpion are recorded in Colorado

No, scorpions are not established in Colorado. Despite the state's warm summers in lower elevations, Colorado's high altitude and seasonal cold temperatures make it unsuitable for scorpions. Most of Colorado sits above 3,000 feet elevation, and winter temperatures often drop well below freezing. Scorpions require the warmer, drier climates found in states like Arizona and New Mexico.

Are they in Colorado?

Scorpions do not live in Colorado. While Colorado experiences warm summers in lower elevations, particularly along the eastern plains, the state's high altitude and cold winters are inhospitable to scorpions. Most of Colorado sits at elevation above 3,000 feet, with mountain regions reaching much higher. Temperatures regularly drop well below freezing during winter months, which no scorpion species can tolerate. Scorpions are found in warm, dry climates and cannot survive Colorado's climate even in the warmest regions. The nearest scorpion populations to Colorado live in New Mexico and Arizona, hundreds of miles away in much warmer, lower-elevation regions. If you encounter what you believe is aScorpion in Colorado, you have almost certainly found a harmless spider or pseudoscorpion. Colorado residents can pursue outdoor activities throughout the state without concern for scorpion encounters.

How dangerous is it?

Since scorpions do not exist in Colorado, there is no risk of scorpion stings for residents and visitors. Scorpions found in nearby southwestern states have varying levels of medical significance. Most species cause only mild to moderate pain comparable to a wasp or bee sting. The Arizona bark scorpion, found in Arizona and nearby regions, is the only North American scorpion with venom potent enough to cause significant medical effects. Even Arizona bark scorpion stings rarely result in death with prompt medical care. Healthy adults who are stung typically experience localized pain and temporary numbness. The key point for Colorado residents is that scorpion danger is completely absent from the state. Mountain hiking, camping, and outdoor activities throughout Colorado are not affected by scorpion risk. The elevation and climate provide complete protection from these desert creatures.

How to recognize one

Scorpions have a distinctive body shape that distinguishes them from other arachnids. A scorpion has eight legs, prominent pincers at the front of the body, and a curved tail that ends in a stinger. North American scorpions typically measure two to four inches in length. They are usually tan, brown, reddish, or yellowish in color. Scorpions have a low, squat posture and move deliberately across the ground. They are nocturnal creatures and hide in dark, protected places during daylight hours. If you are exploringColorado wildlife, you will not encounter a real scorpion. Pseudoscorpions are the creatures most likely to create confusion, as they resemble tiny scorpions one-quarter inch or smaller but lack a visible tail or stinger. Long-legged spiders can sometimes create a confusing silhouette from certain angles. Understanding these distinctions helps eliminate unnecessary concern.

What to do if you are bitten or stung

If any arthropod stings you and you experience pain, swelling, or other symptoms, wash the area with soap and water and apply a cold compress to reduce swelling. Remove any tight rings or bracelets from the affected limb to prevent circulation problems if swelling occurs. Monitor the site for infection or changes over several hours. If you develop symptoms such as numbness, tingling, muscle spasms, difficulty breathing, or chest pain following any sting or bite, seek medical attention. This is general information, not medical advice; if you are bitten, call Poison Control at 1-800-222-1222, or 911 if symptoms are severe. Poison Control specialists are equipped to provide assessment and guidance for any bite or sting. In Colorado, scorpion stings are not a medical concern since scorpions do not exist in the state. Mountain and high-altitude environments present other hazards but not scorpions.

How to prevent encounters

While scorpion prevention is unnecessary in Colorado, general arthropod awareness during outdoor activities is sensible. Wear closed-toe shoes and long pants when hiking through brush, forested areas, or grasslands. Shake out clothing and gear before use, especially items stored outdoors. Inspect items before bringing them into your home. Seal gaps and cracks around doors, windows, and the foundation of your home to prevent any arthropods from entering. Keep woodpiles and rock piles away from your home's foundation. Remove clutter from storage areas and living spaces. When camping or hiking, keep gear stored properly and inspect it before use. Be cautious when moving rocks, logs, or other natural materials. Consultour wildlife guidesfor comprehensive information on outdoor safety in Colorado. These general precautions protect against various mountain and plains arthropods but are not specifically targeting scorpions.

Where in Colorado and when

Scorpions do not live anywhere in Colorado at any time of year. The entire state is unsuitable for scorpion populations due to elevation and climate. Even the warmest regions of Colorado along the eastern plains experience winters that are far too cold for scorpions. Mountain regions, which cover much of western Colorado, maintain temperatures unsuitable for scorpion survival year-round. Scorpions are found only in warm, dry, low-elevation regions of the United States, primarily in the Southwest. They are active during warm months in their native range but are completely absent from Colorado. The nearest scorpion populations exist in New Mexico and Arizona to the south and southwest.Wildlife in Coloradoincludes many creatures adapted to mountain and high-altitude environments, but scorpions are not among them. Residents and visitors enjoy Colorado's wilderness and outdoor opportunities without concern for scorpions.

Harmless lookalikes

If you spot something in Colorado that resembles a scorpion, it is definitely not a scorpion. Pseudoscorpions are the most likely explanation, as they resemble tiny scorpions with pincers but lack a visible tail or stinger. These miniature creatures, typically less than one-quarter inch long, are completely harmless and actually beneficial to have around, feeding on small pests. Long-legged spiders, particularly certain hunting and web-building species, can create a scorpion-like impression from certain angles or distances. Harvestmen, commonly called daddy longlegs, have extremely long thin legs that might cause momentary alarm but are completely harmless. Wolf spiders, common in Colorado, are ground-dwelling and fast-moving but are not aggressive to humans and do not threaten people. Jumping spiders with their distinctive appearance and quick movements are entirely harmless. Understanding these lookalikes should eliminate any scorpion-related concerns.

Frequently Asked Questions

Q: Are scorpions deadly? A: Most North American scorpions cause pain similar to a wasp sting. Only the Arizona bark scorpion has venom that can cause serious effects in rare cases, and death is extremely rare. Scorpions do not live in Colorado.

Q: Could a scorpion ever establish itself in Colorado? A: No, Colorado's elevation and cold winters make the state unsuitable for any scorpion species. These creatures require warm, dry climates found at much lower elevations.

Q: What should I do if I find what looks like a scorpion in Colorado? A: Document it with a photograph and report it to your local wildlife agency or nature center. You have almost certainly found a misidentified spider or pseudoscorpion.

Q: What creatures should I be cautious of while hiking in Colorado? A: Colorado has venomous snakes, bears, and other wildlife to be aware of, but scorpions are not a concern. Refer toColorado wildlife guidefor comprehensive information on creatures in the state.

Plan your trip

Best time to see scorpion in Colorado: May, June, August

See the month-by-month sighting calendar.

When to go

Plan your scorpion sighting in Colorado

415 verified scorpion records have been logged in Colorado, most recently in 2026. See the GBIF records.

Where to look in Colorado

Planning a trip to see scorpion? Find places to stay near Bent's Old Fort National Historic Site on Booking.com.

Frequently asked questions

Are they in Colorado?+

Scorpions do not live in Colorado. While Colorado experiences warm summers in lower elevations, particularly along the eastern plains, the state's high altitude and cold winters are inhospitable to scorpions. Most of Colorado sits at elevation above 3,000 feet, with mountain regions reaching much higher. Temperatures regularly drop well below freezing during winter months, which no scorpion species can tolerate. Scorpions are found in warm, dry climates and cannot survive Colorado's climate even in the warmest regions. The nearest scorpion populations to Colorado live in New Mexico and Arizona, hundreds of miles away in much warmer, lower-elevation regions. If you encounter what you believe is aScorpion in Colorado, you have almost certainly found a harmless spider or pseudoscorpion. Colorado residents can pursue outdoor activities throughout the state without concern for scorpion encounters.

How dangerous is it?+

Since scorpions do not exist in Colorado, there is no risk of scorpion stings for residents and visitors. Scorpions found in nearby southwestern states have varying levels of medical significance. Most species cause only mild to moderate pain comparable to a wasp or bee sting. The Arizona bark scorpion, found in Arizona and nearby regions, is the only North American scorpion with venom potent enough to cause significant medical effects. Even Arizona bark scorpion stings rarely result in death with prompt medical care. Healthy adults who are stung typically experience localized pain and temporary numbness. The key point for Colorado residents is that scorpion danger is completely absent from the state. Mountain hiking, camping, and outdoor activities throughout Colorado are not affected by scorpion risk. The elevation and climate provide complete protection from these desert creatures.