How Common Is Arthritis? U.S. Stats by Age and Type

About one in five U.S. adults has been diagnosed with arthritis, a figure that translates to roughly 53 million people based on the most recent national survey data from 2019 to 2021. That number has held remarkably steady in recent years, but it masks enormous variation depending on age, sex, race, and which type of arthritis you’re talking about. The condition is far from a single disease, and the statistics look very different once you break them apart.

The Overall Numbers

According to a CDC analysis of national survey data from 2019 through 2021, approximately 53.2 million U.S. adults aged 18 and older had doctor-diagnosed arthritis, representing 21.2% of the adult population (or about 18.7% after adjusting for age differences across states and regions).¹ A separate analysis tracking 2019 through 2022 found the number essentially unchanged, hovering near 21.5% with no statistically meaningful upward or downward trend during that window.²

That stability in percentage terms is a bit misleading, though. Because the U.S. population is aging and growing, the absolute number of people living with arthritis keeps climbing even when the rate holds flat. Projections from earlier modeling work estimated that the number of adults with arthritis would rise from around 60 million to 96 million between 2005 and 2050, driven largely by the swelling ranks of people over 65.³ Those projections noted that rising obesity rates and demographic shifts could push the real numbers even higher than the models predicted.

How Age Changes the Picture

Arthritis is overwhelmingly a condition of middle and older age. Nearly nine out of ten U.S. adults with arthritis are 45 or older. Close to half of all people with the diagnosis, about 25.7 million, are 65 and up. Another 21.3 million are in the 45-to-64 range.¹ That leaves only about 12% of arthritis cases among adults under 45, which still amounts to millions of people but makes clear that the burden shifts dramatically once you hit midlife.

This age gradient is steepest for osteoarthritis, the wear-and-tear form that accounts for the largest share of cases. Among people 60 and older, symptomatic knee osteoarthritis alone affects roughly 10% of men and 13% of women.⁴ Gout follows a similar pattern, with prevalence peaking in the 60-to-69 age range globally.⁵ Rheumatoid arthritis and the spondyloarthritis family can strike earlier, but even those conditions become more commonly diagnosed as people age.

Osteoarthritis Is the Most Common Type by Far

Osteoarthritis is the single biggest contributor to the arthritis total. Estimates put it at about a quarter of all U.S. adults, making it the most common joint disorder in the country.⁶ A national survey analysis covering 1999 through 2014 found that the age-adjusted prevalence of osteoarthritis roughly doubled during that period, climbing from about 6.6% to 14.3%.⁷ Some of that increase probably reflects better detection and changing diagnostic habits rather than a pure spike in the underlying disease, but rising obesity rates and an aging population played real roles too.

Osteoarthritis is also where the financial impact concentrates. A systematic review pegged all-cause medical costs associated with osteoarthritis patients at around $460 billion, making it one of the most expensive musculoskeletal conditions in the U.S.⁸ Joint injuries and physically demanding occupations remain among the strongest risk factors for developing it, alongside alignment problems and excess body weight.⁹

Rheumatoid Arthritis, Gout, and the Less Common Types

Rheumatoid arthritis is much less common than osteoarthritis but gets outsized attention because it’s an autoimmune disease that can cause rapid joint destruction if untreated. Claims-database analyses suggest about 0.5% of U.S. adults carry an RA diagnosis, translating to roughly 1.3 million people.¹⁰ Women are diagnosed about two to two-and-a-half times more often than men: the age-adjusted prevalence was roughly 0.7–0.8% in women versus 0.3% in men as of 2014. The national survey-based estimate is higher, around 4% when people self-report, though this figure likely captures some misdiagnosis and overlap with other inflammatory conditions.⁷ The claims-based numbers, which require a confirmed diagnosis code in medical records, are generally considered more reliable for RA specifically.

Gout has been gaining ground. By the most recent nationally representative estimate (2015–2016), about 3.9% of U.S. adults had gout, representing around 9.2 million people. Men were nearly twice as likely as women to be affected, at 5.2% versus 2.7%.¹¹ More recent data from 2017–2018 put the overall figure even higher, at about 5.1%, or roughly 12 million people. During that period, Asian American adults saw the sharpest increase, with their age- and sex-adjusted gout prevalence doubling to about 6.6%, numerically surpassing Black, White, and Hispanic adults.¹² The U.S. has the highest age-standardized gout prevalence of any country globally, and the increase since 1990 has been steeper here than anywhere else.⁵

The spondyloarthritis group, which includes ankylosing spondylitis and psoriatic arthritis, is less common individually but adds up. Estimates place ankylosing spondylitis prevalence between 0.2% and 0.5%, and psoriatic arthritis at around 0.1% to 0.3%.¹³ The overall spondyloarthritis prevalence may exceed 1% when you include inflammatory back disease associated with conditions like Crohn’s disease and ulcerative colitis. Diagnoses of ankylosing spondylitis rose steadily in both Medicare and commercially insured populations between 2006 and 2014.¹⁴

Arthritis in Children

Juvenile idiopathic arthritis is the most common chronic rheumatic disease in children, and while it’s far rarer than adult forms, it’s not as unusual as many parents assume. One large U.S.-based analysis of over 223,000 children identified a prevalence of roughly 249 per 100,000, meaning about 1 in every 400 children.¹⁵ Children with JIA also carry a much higher burden of additional autoimmune conditions. In one study, more than half of the autoimmune diseases and associated conditions evaluated were significantly more common in the JIA group than in the general pediatric population, with several conditions more than 20 times as prevalent.¹⁶

Who Gets Hit Hardest

Women

Women bear a disproportionate share of almost every arthritis type. Globally, women account for about 60% of people with osteoarthritis, with the gap widening after age 40.¹⁷ The reasons go beyond simple prevalence: at the same degree of visible joint damage on imaging, women report more severe pain and have greater limitations in physical function than men, regardless of body weight or injury history. Women also use pain medications more often but are less likely to receive joint replacement surgery, and when they do, their outcomes tend to be worse. Differences in joint anatomy, hormonal influences, and distinct pain-processing pathways all seem to contribute.¹⁷ Beyond OA specifically, women with arthritis of all types report more activity limitations, work restrictions, and psychological distress than men with the same conditions.¹⁸

Racial and Ethnic Disparities

Arthritis prevalence and severity differ sharply across racial and ethnic groups, and not all of the differences can be explained by income, obesity, or other measurable factors. American Indian and Alaska Native adults have the highest age-adjusted arthritis prevalence of any group at about 30.3%, compared with 22.9% among non-Hispanic White adults.¹⁹ Severe joint pain is even more unevenly distributed: among people who already have arthritis, about 39% of American Indian/Alaska Native adults and 36% of Black adults report severe pain, compared with about 23% of White adults. Those gaps persist even after adjusting for socioeconomic status, BMI, depression history, and other chronic conditions.

For rheumatoid arthritis specifically, non-Hispanic Black Americans face higher risk than White Americans even after accounting for education and income.²⁰ Black patients with RA also tend to experience worse functional outcomes, which researchers attribute in part to individual, provider, and system-level barriers that delay treatment during a disease where early intervention is critical to slowing joint damage.²¹ For osteoarthritis of the knee and hip, Black Americans similarly show higher odds of developing symptomatic disease and tend to present with more severe joint damage at diagnosis.²²

Geography Matters Too

Where you live in the United States affects your likelihood of having arthritis. State-level prevalence ranges from about 19% to 36%, and at the county level the spread is even wider, from 16% to 39%.²³ Rural communities carry a notably heavier burden: the most rural counties had an unadjusted prevalence of about 32%, compared with roughly 21% in the most urban areas. The reasons overlap with the demographic disparities above — rural populations tend to be older, have higher obesity rates, and face more limited access to specialty care.

The Gap Between X-Rays and Symptoms

One complicating factor in all these statistics is that what shows up on imaging and what a person actually feels don’t match up as well as you might expect. In studies of knee osteoarthritis, the proportion of people with knee pain who turn out to have radiographic OA ranges from 15% to 76%, and among those whose X-rays do show joint damage, anywhere from 15% to 81% report pain.²⁴ In other words, many people walking around with visible joint degeneration on X-ray have no symptoms at all, while others with clean-looking imaging are in real discomfort. The relationship between severity of structural damage and severity of pain is real but much weaker than most people assume.²⁵

This discordance matters for interpreting prevalence numbers. The estimates cited throughout this article are based on doctor-diagnosed arthritis, meaning a healthcare provider told the patient they have some form of the condition. Those numbers inevitably miss people with early or mild disease who haven’t sought care, and they may overcount some people who received an imprecise diagnosis. Self-reported data adds another layer of fuzziness, since patients don’t always remember the exact type of arthritis they were told they have.

Work Limitations and Disability

Arthritis is the leading cause of physical disability among U.S. adults, and its effects on work are substantial. Among all working-age adults (18 to 64), about one in 20 reports arthritis-related work limitations. Among those who actually have an arthritis diagnosis, the figure is closer to one in three.²⁶ State-level variation is dramatic: work limitations due to arthritis were most common in Kentucky (about 15% of all working-age adults) and least common in Hawaii (about 3.4%). Work limitations were highest among people aged 45 to 64, women, Black adults, those with less education, and people with household incomes under $20,000.²⁷

Beyond work, arthritis-related activity limitations affect about 44% of adults with the condition. People who are physically inactive, have obesity, or have coexisting heart disease or diabetes are significantly more likely to experience those limitations.²⁸ The total economic toll in 2013 was estimated at about $304 billion when you combine direct medical costs (roughly $140 billion) with lost earnings (about $164 billion).²⁹

Arthritis Tends to Travel With Other Conditions

People with arthritis rarely have arthritis alone. Among older adults with the condition, over 80% have at least one other chronic disease. Hypertension is the most common companion, followed by diabetes, coronary artery disease, chronic obstructive pulmonary disease, and congestive heart failure.³⁰ Having arthritis alongside any of these conditions is associated with significantly lower quality of life than having the other condition alone. People with obesity are about 1.5 times as likely to have arthritis as those without it, and people with heart disease are almost twice as likely.²⁸

Diagnostic Delays Remain a Problem

Getting a timely diagnosis is harder than it should be, especially for inflammatory types of arthritis where early treatment makes the biggest difference. In one study, 28% of patients with rheumatic disease waited four months or longer before seeing any doctor after symptoms began. Another 36% then waited an additional four months or more to be referred to a rheumatologist.³¹ Part of the problem is that early rheumatoid arthritis doesn’t always look like what people expect: symptoms can be gradual, and the widespread use of over-the-counter anti-inflammatory drugs can mask the signs long enough to push people past the window where treatment is most effective.³² These delays fall disproportionately on minority patients, who already face higher disease severity and poorer access to rheumatology specialists.

Joint Replacements Are Surging

When arthritis progresses far enough, joint replacement becomes the main surgical option. As of 2010, about 2.5 million Americans were living with a total hip replacement and 4.7 million with a total knee replacement. By age 80, more than 10% of the population had a knee replacement and about 5% had a hip replacement. Women accounted for the majority of both.³³

Projections suggest these numbers are only going to accelerate. Primary total knee replacements in the U.S. are expected to increase by roughly 400% between 2014 and 2040, and total hip replacements by about 284%.³⁴ One notable trend is that replacements are increasingly being done at younger ages. That shift brings new questions about how long artificial joints last and whether younger patients will need revisions decades later.

Exercise Counseling Is Falling Short

Physical activity is one of the most effective non-drug strategies for managing arthritis pain and maintaining function, yet healthcare providers aren’t recommending it as often or as specifically as guidelines suggest. Only about 4.4% of adults with arthritis reported being referred to a group exercise class or a physical activity program specifically designed for arthritis management. About 16% said they received no counseling about physical activity at all from their healthcare providers.³⁵ Given that physical inactivity is strongly linked to worse activity limitations in people who already have arthritis, this gap between what works and what actually gets recommended represents a missed opportunity on a massive scale.

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