More than one in five American kids (20.6%) now has a diagnosed seasonal allergy, according to fresh federal data released by the CDC’s National Center for Health Statistics. Add in the 12.7% of children with eczema and the 5.3% with a diagnosed food allergy, and allergic conditions are no longer an occasional childhood issue; they’re closing in on a third of all kids in some form. The data, drawn from the National Health Interview Survey and covering children ages 0 to 17, also turns up a geographic wrinkle that runs counter to the usual assumption: kids in rural areas are developing seasonal allergies at meaningfully higher rates than kids in cities. The report, titled “Diagnosed Allergic Conditions Among Children Ages 0-17 Years: United States, 2024,” is one of the more detailed federal snapshots of childhood allergies in recent years, and its topline numbers give parents a clearer sense of just how common these diagnoses have become nationally.
One in Five Kids Now Has a Diagnosed Seasonal Allergy
Seasonal allergies are the most common allergic condition among American children by a wide margin, affecting 20.6% of kids ages 0 to 17, per the CDC/NCHS release. That works out to roughly one child in every five, a rate high enough that a typical elementary school classroom of 25 students likely includes five or six kids managing sneezing, congestion, or itchy eyes tied to pollen and other seasonal triggers, based purely on the national average. Seasonal allergies also emerge as the single most prevalent of the three conditions the CDC measured, well ahead of both eczema and food allergies, which underscores how much of the overall childhood allergy burden traces back to environmental and airborne triggers rather than food or skin sensitivities alone.
Skin Allergies Are Nearly as Common, and They Start Early
Eczema affects 12.7% of children overall, but the CDC data shows the condition is heavily front-loaded into early childhood. Kids ages 0 to 5 have the highest eczema rate at 14.0%, which drops to 12.7% for kids ages 6 to 11 and 11.6% for teens ages 12 to 17. The pattern suggests eczema often eases somewhat as children age, even though it remains common enough at every stage that more than one in ten kids is dealing with it at any given point in childhood or adolescence. The gap between the youngest and oldest age groups is modest, about 2.4 percentage points, but the consistent downward trend across all three bands is one of the clearer age-related patterns in the entire dataset.
Food Allergies Affect More Boys Than Girls
Food allergies are the least common of the three conditions the CDC tracked, affecting 5.3% of children overall, but they show a clear sex gap: 5.9% of boys have a diagnosed food allergy compared with 4.7% of girls, according to the federal data. That’s not a huge spread in absolute terms, but it’s consistent enough to show up clearly in a national sample, and it means boys are diagnosed with food allergies at meaningfully higher rates than their female peers throughout childhood. Unlike eczema, the CDC’s food allergy figures aren’t broken out by age in this release, so it isn’t clear from the data alone whether that sex gap widens, narrows, or holds steady as kids move from toddlerhood into the teen years.
Rural Kids Are Getting Hit Harder by Seasonal Allergies Than City Kids
Here’s the twist in the data that runs against conventional wisdom: seasonal allergies are more common among rural children than urban ones. Kids in rural areas have a 25.6% seasonal allergy rate, compared with 19.8% among kids living in urban areas, per the CDC’s numbers. That’s nearly a six-point gap, and it cuts against the assumption that city pollution and dense urban tree cover would drive allergy rates higher than they’d be in the countryside. Instead, greater exposure to farmland, grasses, and rural vegetation appears to be the bigger factor in diagnosed cases. For parents raising kids outside major metro areas, that near-six-point gap is a useful data point heading into peak pollen stretches, when symptoms are most likely to surface or worsen.
Taken together, the numbers describe a version of American childhood where allergic conditions are less an exception than a baseline expectation: one that looks different depending on whether a family lives on a quiet rural road or a city block, but that touches a meaningful share of kids everywhere in between.