Around 430 million people worldwide have disabling hearing loss, according to the World Health Organization. That’s over 5% of the global population. But the full picture is much larger: when you include all degrees of hearing loss, from mild to profound, the number rises dramatically, and it’s expected to keep climbing in the coming decades.
Global Numbers at a Glance
The 430 million figure refers specifically to “disabling” hearing loss, meaning hearing loss severe enough to significantly affect daily communication and quality of life. This count includes 34 million children. These are people who need some form of rehabilitation, whether that’s hearing aids, cochlear implants, sign language support, or other services.
Millions more live with milder forms of hearing loss that don’t meet that threshold but still affect how they hear conversations, music, or warning sounds. The WHO projects that by 2050, nearly 2.5 billion people (1 in 4) will have some degree of hearing loss, and at least 700 million of them will need ear and hearing care services. That projected jump reflects aging populations worldwide, continued exposure to loud noise, and better screening that catches cases previously missed.
Hearing Loss in the United States
In the U.S., about 1 in 8 people aged 12 or older (roughly 30 million) has hearing loss in both ears based on standard hearing tests. When you include people with hearing loss in just one ear or those who self-report trouble hearing, the number is higher: approximately 37.5 million American adults say they have some trouble hearing.
Age is the single biggest factor. Hearing loss rates climb steeply after middle age:
- Ages 45 to 54: about 5% have disabling hearing loss
- Ages 55 to 64: about 10%
- Ages 65 to 74: about 22%
- Ages 75 and older: about 55%
A study of Medicare beneficiaries found that among adults aged 71 to 74, more than half (53.4%) had bilateral hearing loss of any degree. By the time people reach their late 70s and beyond, hearing loss is more common than not.
Hearing Loss in Children
Hearing loss at birth is less common but still significant. In the U.S., about 2 to 3 out of every 1,000 children are born with a detectable level of hearing loss in one or both ears. CDC data from 2022 puts the prevalence at 1.7 per 1,000 babies screened. The difference between these figures reflects variations in how hearing loss is defined and measured, since some milder cases picked up in later childhood aren’t caught during newborn screening.
Nearly all newborns in the U.S. are now screened for hearing loss before leaving the hospital. Early detection matters because children who receive intervention in the first six months tend to develop language skills on a much closer timeline to their hearing peers.
What Counts as Hearing Loss
Hearing ability is measured in decibels (dB), and hearing loss is classified by how loud a sound needs to be before you can detect it. The standard scale breaks down like this:
- Mild (26 to 40 dB): Difficulty hearing soft speech or conversations in noisy environments. You might miss words here and there but can generally follow along.
- Moderate (41 to 55 dB): Normal conversation becomes hard to follow without raising voices or moving closer. Phone calls get noticeably harder.
- Severe (71 to 90 dB): You can only hear very loud speech or sounds. Most conversation is inaudible without hearing aids or other amplification.
- Profound (91+ dB): You may perceive vibrations but hear little to no sound. This is the range most people think of when they use the word “deaf.”
When organizations report that 430 million people have “disabling” hearing loss, they’re generally referring to hearing loss greater than 35 dB in the better ear for adults and greater than 30 dB for children. That captures moderate through profound levels. The much larger numbers (like the projected 2.5 billion by 2050) include mild hearing loss as well.
Why the Numbers Keep Growing
Three forces are driving the rise in hearing loss worldwide. First, populations are aging. As more people live into their 70s, 80s, and beyond, the proportion with age-related hearing loss grows. Second, noise exposure from headphones, concerts, workplaces, and urban environments is affecting younger generations earlier than in previous decades. The WHO estimates that over a billion young people are at risk of hearing loss from unsafe listening practices. Third, screening and awareness have improved, meaning more cases are being identified that would have gone undiagnosed in previous generations.
The gap between people who need hearing care and those who actually receive it remains enormous. Globally, only about 17% of people who could benefit from a hearing aid use one. In lower-income countries, the gap is even wider, with fewer than 3% of people who need hearing aids having access to them.