Local spider information

Spider control in Colorado

Learn what to look for around your property, explore your city, and ask about an inspection or a quote.

Spiders in Colorado: what to know

Around Colorado

Conditions vary across the state. Choose your city below, then describe what’s happening around your home or business.

What to note

Where you see spiders, how long it has been going on, and anything you’ve already tried are the most useful details to mention.

A useful next step

Ask about an inspection, what treatment would involve, and whether follow-up visits are included. You don’t need to identify the problem yourself before getting in touch.

Local research

Spiders in Colorado: what the public record shows

Before you compare quotes, it helps to know which spiders actually live in Colorado, when they are busiest, and what the state figures look like. Everything below links to the agency or university page it came from.

rare in Colorado because of our cold winters and dry climate

Brown recluse in Colorado

Most Colorado 'recluse' reports are funnel weavers or other look-alikes.

Colorado State University Extension

Spider species recorded in Colorado

Western black widow (Latrodectus hesperus) — 'The black widow spider, Latrodectus hesperus, is the most common harmful spider in California' and 'occur in most parts of California' (UC IPM); 'common in Colorado' (CSU); Lat…
Funnel weavers (grass spiders) (Agelenidae) — 'The most common spiders found in homes, particularly during late summer and early fall' in Colorado (CSU).

When spiders are busiest in Colorado

'Funnel web spiders are the most common spiders found in homes, particularly during late summer and early fall'; 'Some spiders wander indoors in the early fall' (CSU).

'Widow spiders, particularly the western widow (Latrodectus hesperus), are common in Colorado' (CSU).

For context, nationally

Throughout North America, but are most common in the southern and western United States — Black widow distribution. CDC/NIOSH
In the midwestern and southern United States — Brown recluse distribution. CDC/NIOSH

Sources: Spiders in the Home (5.512); CDC/NIOSH; Pest Notes: Spiders (PN 7442). Figures are quoted as the source prints them. How we check our sources

Explore Colorado cities

Arvada

Semi-Arid · suburban setting

Spider control in Colorado

Spiders in Colorado: what to know

Around Colorado

What to note

A useful next step

Spiders in Colorado: what the public record shows

Spider species recorded in Colorado

When spiders are busiest in Colorado

For context, nationally

Explore Colorado cities

Arvada

Aurora

Boulder

Broomfield

Castle Rock

Centennial

Colorado Springs

Denver

Fort Collins

Grand Junction

Greeley

Lakewood

Longmont

Loveland

Parker

Pueblo

Thornton

Westminster

Commerce City

Ask about spider control in Colorado