Phobia facts and statistics

In this article:

• Key phobia statistics
• What is a phobia?
• How common are phobias?
• Most common specific phobias
• Phobias and overall health
• Cost of phobias
• Causes of phobias
• Phobia treatment
• Treatment success statistics
• FAQs

In this article

• Key phobia statistics
• What is a phobia?
• How common are phobias?
• Most common specific phobias
• Phobias and overall health
• Cost of phobias
• Causes of phobias
• Phobia treatment
• Treatment success statistics
• FAQs

As the saying goes, the only thing to fear is fear itself. But for people who have a phobia, that’s easier said than done. While fear is a common emotion, phobias cause much more severe and specific terror. Phobias are one of the most common anxiety disorders in the U.S., and we’ve compiled some of the most noteworthy statistics on their prevalence, demographics, treatment success rates, and causes right here. 

We gathered these statistics from peer-reviewed journals, government agencies (including the National Institute of Mental Health), and major medical organizations. Sources are listed below. 

Key phobia statistics

• 19 million Americans have at least one phobia.
• Around 7.4–14% of people experience a specific phobia during their lifetime.
• Women are twice as likely as men to experience specific phobias.
• Specific phobias are the most common anxiety disorder.
• Needle phobia causes up to 16% of adults to avoid vaccinations.

What is a phobia?

We all experience fear. But a phobia isn’t the same as getting startled, then going on with your day. It’s much stronger and more persistent. 

“Phobia is a type of anxiety disorder that causes overwhelming and irrational fear toward an object, place, or situation,” explained Sam Nabil, CEO and lead therapist of Naya Clinics. It’s “always connected to something specific. Its effect can be severely disabling in that it can disrupt an individual’s life and relationships.”

When presented with their phobia or put in a “phobic” situation, someone who has this anxiety disorder may experience an increase in heart rate, sweating, shaking, panic attacks, or even more extreme physical responses.

Technically, a person can have a phobia of anything, so it’s impossible to list out all of the phobias that exist. However, the DSM-5 lists three main types: social phobias, agoraphobia, and specific phobias.

RELATED: Anxiety statistics

How common are phobias?

• Specific phobia is the most common anxiety disorder, with a lifetime prevalence of 7.4 and 14% among adults, depending on the study. (Scientific Reports, 2023)
• It’s estimated that 19 million Americans have at least one phobia, ranging from mild to severe. (John Hopkins Medicine)
• Within the last year, approximately 9.1% of adults in the United States experienced some degree of a specific phobia. Among those experiencing phobias, the prevalence was higher in females (12.2%) than in males (5.8%). (National Institute of Mental Health)

Phobia statistics worldwide

• In a survey of 22 countries, 7.4% of respondents reported experiencing a specific phobia at some point in their lives, and 5.5% reported having one in the last 12 months. (Journal of Psychiatric Research, 2020)
• The prevalence of specific phobias was higher in females when compared to males and higher in higher-income countries when compared to lower-income countries. (Journal of Psychiatric Research, 2020)
• The countries with the lowest lifetime prevalence of social phobias were China (2.6%), Poland and Japan (3.4%), and Brazil (12.5%). (Journal of Psychiatric Research, 2020)
• About 10 million individuals in the United Kingdom have at least one phobia. (National Health Service Inform, 2022)

National phobia statistics

• Among adults in the U.S. experiencing a specific phobia within the last year, 48.1% had a mild impairment, 30% had a moderate impairment, and 21.9% had a serious impairment. (National Institute of Mental Health)
• In 2026, Americans performed Google searches for agoraphobia (fear of being trapped in a place) and trypophobia (fear of many small holes or bumps) more than any other phobias. (Google Trends, 2026)

Phobia statistics by type

According to the National Institutes of Health, the lifetime prevalence rates for official diagnoses of each major type of phobia are: 

• Specific phobia: 13.8%
• Social phobia: 13%
• Agoraphobia: 2.6%

(National Institutes of Health, 2024)

Phobia statistics by age

• The prevalence of specific phobia diagnoses by age is as follows:
  • 18–29: 10.3%
  • 10–44: 9.7%
  • 45–59: 10.3%
  • 65 and older: 5.6%

(National Institute of Mental Health)

• A study of adolescents across seven countries found that 36% of respondents met the criteria of social anxiety disorder, also known as social phobia. (PLOS One, 2020)
• A 2011 study showed that 19.7% of children and adolescents experienced some kind of phobia. The most common phobia was social phobia at 12.7%. The second most common phobia was agoraphobia at 8.6%. (European Psychiatry, 2011)

What are the most common specific phobias?

• The most common specific phobias are zoophobia (fear of animals), acrophobia (fear of heights), and astraphobia or brontophobia (fear of thunderstorms). (Merck Manual, 2022)
• Up to 6% of people will experience zoophobia. (The Lancet Psychiatry, 2018)
• In one study, spiders elicited the strongest response from participants (19% reported extreme fear), and snakes elicited the second-strongest response (10% reported extreme fear). The fear of spiders is called arachnophobia, and the fear of snakes is called ophidiophobia. (British Journal of Psychology, 2019)
• Additionally, 1 in 3 people with zoophobia has a fear of dogs (cynophobia). (Cleveland Clinic, 2021)
• About 3% to 6% of people have acrophobia (fear of heights). (Cleveland Clinic, 2021)

Phobias and overall health

• According to a cross-national study, over their lifetimes, people diagnosed with a specific phobia also have:
  • Mood disorders: 34.3%
  • Other anxiety disorders: 41.2%
  • Impulse control disorder: 17.4%
  • Substance use disorder: 15.9%

(Psychological Medicine, 2017)

• Around 18.7% of people who had a 12-month specific phobia reported severe impairment in one or more areas of life. That includes:
  • Impairment at home: 10.3%
  • Impairment in relationships: 7.9%
  • Impairment at work: 9.3%
  • Impairment in social situations: 9.0% 

(Psychological Medicine, 2017)

• Nearly 35% of a study’s 1,001 patients with obsessive-compulsive disorder (OCD) also had a social phobia. (Journal of Affective Disorders, 2012)
• A fear of needles (trypanophobia) causes up to 16% of adults to avoid getting vaccines. (Journal of Advanced Nursing, 2019)
• About 3% of adults may avoid going to the dentist due to dentophobia, which is more common in females than males. (Cleveland Clinic, 2022)

The cost of phobias

• As of 2024, the average cash-pay rate for a single psychotherapy session in the U.S. was $143.26. (Health Affairs Scholar, 2024)
• The annual wages lost for unemployed individuals with a phobic anxiety disorder are around $23.3 million. (University of Chicago, 2026)
• Americans who have a phobic anxiety disorder will spend an average of $128 per capita on prescription drugs and $762 per capita on office visits. (University of Chicago, 2026)
• The total annual cost of missed workdays by individuals who have phobic anxiety is $19.8 million. (University of Chicago, 2026)
• One study found that the estimated cost of anxiety disorders in the United States, including phobias, was $48.72 billion. (University of Tennessee Health Science Center, 2013) 

Causes of phobias

Phobias have a lot of different causes, and research from The Lancet Psychiatry indicates that both genetic and environmental factors can play a role. If a person has a family member who deals with an anxiety disorder or panic disorder, they can be at higher risk for developing one themselves. Environmental factors can include negative experiences and trauma around the phobia. 

Other mental health conditions may also increase the risk of developing a phobia, since phobias and conditions like major depressive disorder, generalized anxiety disorder, PTSD, and OCD often co-occur. 

Phobia treatment

“In the past, the standard treatment was systematic desensitization,” Dr. Nabil says. “In this treatment, a patient learns relaxation techniques that will counter-condition their response to the aversive stimulus, then, in a hierarchical way, the patient will have increased degrees of exposure to their fear.”

Say someone has a fear of spiders. During their exposure therapy, they might begin looking at pictures of spiders and eventually work up to being in the room with a real spider. Some treatments may incorporate virtual or augmented reality to potentially increase their effectiveness. 

However, in more recent years, therapists have been leaning toward cognitive behavioral therapy (CBT). In this treatment, the therapist teaches the patient how to manage their feelings and responses toward the phobia. Therapists may also choose to administer a combination of desensitization, exposure therapy, and CBT. 

Medications, such as SNRI and SSRI antidepressants, may be prescribed to treat the anxiety associated with phobias. Antidepressants should be used in combination with psychotherapy for optimal treatment.

Phobia treatment success statistics

• In a study on children with anxiety disorders, CBT showed a 55–65% response rate, and adding SSRI medications to that regimen increased the response rate to 75–80%. (Discover Mental Health, 2026)
• In a systematic review of studies on anxiety disorder treatment in older adults, CBT achieved treatment response in 53% of patients, and medications had a response rate of 62%. (The American Journal of Geriatric Psychiatry, 2026)
• Studies have shown an 80–90% response rate for exposure therapy for people who have a specific phobia. (F1000 Research, 2020)
• A long-term study showed that exposure therapy achieves a greater reduction in fear than progressive muscle relaxation over six months and a year. (Journal of Affective Disorders, 2025)
• A 2020 study showed that 90% of patients with arachnophobia preferred extended reality (XR) exposure therapy to standard exposure therapy. (Journal of Counseling & Development, 2020)
• CBT has shown a relapse rate of 14% when used for patients with an anxiety disorder. (Journal of Anxiety Disorders, 2021)
• One study showed that 21.8% of patients with social phobia relapse after successful exposure therapy. (Psychological Medicine, 2023)

Phobia questions and answers

What phobia is most common?

The most common phobia is specific phobias. Around 7.7% to 12.5% of the population will experience a specific phobia in their lifetime. 

What is the rarest phobia?

Since there are a vast number of different phobias, there is no single “rarest phobia.” 

What percent of the population has a phobia?

According to the National Institute of Mental Health, around 9.1% of adults in the United States have at least one phobia. 

How many phobias are there?

There are three main categories of phobias: social phobia, agoraphobia, and specific phobias. Since people can have a phobia of potentially anything, which would be a specific phobia, there is no way to say exactly how many phobias there are.