With ADHD diagnoses rising across the United States and stimulant prescriptions surging around 60% over the past decade [6], the gap between diagnosis rates and available mental health support has never been more urgent. As awareness of ADHD and its links to anxiety, depression, and other conditions grows [8], many Americans find themselves diagnosed but unable to access adequate care.
A new analysis by APN examined ADHD prevalence rates across US states using data from the CDC National Survey of Children’s Health [1], alongside mental health workforce availability data from the Health Resources and Services Administration [2] to reveal which states face the widest gap between ADHD diagnosis rates and the professional support needed to manage the condition — particularly given that 80% of adults with ADHD have at least one additional psychiatric disorder [7].
Key Findings
Louisiana ranks as the state with the highest child ADHD prevalence in the United States at 16.5% — more than three times the rate in California (5.3%), the lowest-prevalence state [1]. Despite having among the highest rates of ADHD diagnosis in the country, Louisiana also has one of the worst mental health provider access ratios [5], creating a compounding care gap where the greatest need meets the least capacity.
Across the US, the national average child ADHD prevalence sits at approximately 11.4% [1], but the variation between states is stark. A total of 15 states have ADHD rates higher than the national average [1], with most concentrated in the South and Appalachian regions.
State-by-State ADHD Rate and Mental Health Provider Access
The table below highlights selected states by child ADHD prevalence, alongside mental health provider access ratios and an assessment of the gap severity between need and capacity [1][5]. Gap severity classification based on relative ADHD prevalence and population-to-mental-health-provider ratios. States highlighted in yellow represent those with the most severe combined gaps based on ADHD prevalence and provider access.
| Rank | State | ADHD Rate (Children) | MH Provider Ratio | Gap Severity | Notes |
| 1 | Louisiana | 16.5% | ~600:1 (est.) | Severe | Highest ADHD + poor access |
| 2 | Rhode Island | 15.9% | ~300:1 | Moderate | High ADHD, better access |
| 3 | South Carolina | 15.8% | ~550:1 | High | High ADHD + limited access |
| 4 | Maine | 15.5% | ~350:1 | Moderate | Rural access challenges |
| 5 | West Virginia | 15.1% | ~600:1 | High | High ADHD + poor access |
| 6 | Mississippi | 14.4% | ~700:1 | Severe | High ADHD + very poor access |
| 7 | Alabama | 12.1% | 800:1 | Severe | Worst provider access nationally |
| 8 | Kentucky | 12.0% | ~500:1 | High | Above avg ADHD + limited access |
| 9 | Arkansas | ~12.0% | ~550:1 | High | Southern cluster, limited data |
| 10 | Tennessee | ~11.8% | ~500:1 | High | Above average ADHD, limited access |
| 11 | Indiana | ~11.7% | ~450:1 | Moderate | Above average both metrics |
| 12 | Georgia | ~11.5% | ~470:1 | Moderate | Near national average |
| — | National Average | 11.4% | 340:1 | Benchmark | — |
| 13 | South Dakota | 6.7% | ~450:1 | Moderate | Low ADHD but some access gaps |
| 14 | New York | 6.0% | ~200:1 | Low | Low ADHD + good access |
| 15 | Hawaii | 5.8% | ~250:1 | Low | Low ADHD + good access |
| 16 | Nevada | 5.7% | ~600:1 | High | Low ADHD BUT poor access |
| 17 | California | 5.3% | ~250:1 | Low | Lowest ADHD + good access |
Note: Full 50-state data is available from the CDC NSCH [1]. The table above highlights the most extreme cases at both ends of the spectrum, plus the national benchmark.
Standout Findings
The Southern ADHD Cluster
Five of the states with the highest ADHD prevalence are in the South: Louisiana (16.5%), South Carolina (15.8%), Mississippi (14.4%), Alabama (12.1%), and Kentucky (12.0%) [1]. This geographic concentration is particularly concerning because several of these states also rank among the worst for mental health provider access [5]. Alabama, for instance, has one of the worst provider ratios in the country at roughly 800 people per one mental health provider — nearly six times higher than Massachusetts (140:1) [5].
The Comorbidity Multiplier
ADHD rarely exists as a standalone condition. Research published in the American Journal of Psychiatry found that 80% of adults with ADHD have at least one comorbid psychiatric disorder [7], while CDC data shows that roughly 78% of children with ADHD have an additional mental health condition [1]. The most common co-occurring conditions in children include oppositional defiant disorder (34.7%), anxiety disorders (18.4%), and depression (8.4%–20.9%, depending on age group) [1]. Adults with ADHD are about 2.7 times more likely to have major depressive disorder, and approximately half have a co-occurring anxiety disorder [7].
The Prescription Surge vs. Access Crunch
Stimulant prescriptions in the United States increased from 72.8 million to 90.2 million annual fills between 2012 and 2023 [6]. Yet many adults taking stimulant medications report difficulty filling their prescriptions amid ongoing medication shortages. The United States also lacks formal national guidelines for diagnosing adult ADHD — a gap that contributes to variation in how the condition is identified and treated.
The 137-Million Shortage
As of December 2025, 137 million Americans live in federally designated mental health Health Professional Shortage Areas (HPSAs), up from 122 million in recent years [2]. Only 27.3% of the nation’s estimated mental health workforce need is currently being met [2], according to HRSA data. Approximately 6,800 additional mental health practitioners would be needed to remove all shortage designations [2]. Arizona meets just 10.1% of its mental health workforce need — among the lowest percentages of any state [2].
Expert Commentary
Dr. Philip Hemphill, Chief Clinical Officer at All Points North, commented:
“What’s striking about these findings is the sheer scale of the mismatch. Louisiana and Alabama have some of the highest ADHD rates in the country, yet their mental health infrastructure is among the weakest; it’s unclear who is diagnosing and treating these individuals. When you factor in that 80% of adults with ADHD are also managing at least one other mental health condition, you begin to see a system that is fundamentally under-resourced for the complexity of care that ADHD patients actually need. This isn’t just an ADHD problem — it’s a mental health system capacity problem that ADHD makes impossible to ignore.”
Regional Breakdowns
Louisiana
Louisiana has the highest reported child ADHD prevalence at 16.5% [1], yet faces significant mental health provider shortages [5]. For families managing ADHD alongside the condition’s common comorbidities — anxiety, depression, and behavioral disorders [1][7] — the gap between diagnosis and available support represents a critical unmet need.
Alabama
Alabama has one of the worst mental health provider access ratios in the country at roughly 800 people per one provider [5]. Combined with an above-average ADHD rate of 12.1% [1], families in Alabama face one of the most severe access gaps in the country.
California
California reports one of the lowest child ADHD prevalence rates in the nation at 5.3% [1] and has comparatively strong mental health provider access [5]. However, the state’s size means that significant pockets of underservice exist in rural and inland regions.
Appalachian States
West Virginia (15.1%), Kentucky (12.0%), and Tennessee (~11.8%) [1] form an Appalachian cluster where ADHD rates exceed the national average and mental health provider access tends to be lower than in many coastal states [5]. Rural geography compounds the provider shortage in these regions.
Arizona
Arizona meets only 10.1% of its mental health workforce need [2] — among the lowest percentages of any state — creating severe barriers for the roughly 11% of children nationally with ADHD diagnoses [1] who may need ongoing mental health support.
Methodology
Data was sourced from the CDC National Survey of Children’s Health (NSCH, 2020-2022 data) [1], the Health Resources and Services Administration (HRSA) Health Professional Shortage Area designations (December 2025) [2], Mental Health America state rankings [3], America’s Health Rankings from the United Health Foundation [4], and County Health Rankings & Roadmaps [5] . ADHD prevalence rates represent the percentage of children aged 3-17 ever diagnosed with ADHD in each state [1]. Mental health provider ratios represent the number of people per one mental health provider across the general population, as calculated by County Health Rankings [5]. States with incomplete NSCH data were excluded. This analysis examines the parallel between ADHD prevalence and provider access but does not claim a causal relationship between the two.
Research suggests that around 80% of adults with ADHD have at least one comorbid psychiatric disorder [7].
Notes on Methodology
This analysis uses “ever diagnosed” ADHD prevalence rates from the CDC NSCH [1], which include children who may no longer meet diagnostic criteria. Mental health provider ratios reflect licensed mental health professionals [5] and do not account for appointment availability, wait times, telehealth access, or insurance acceptance. Provider ratios are state-level averages and may mask significant within-state variation between urban and rural areas. Comorbidity statistics are drawn from national clinical research [7] and may not reflect state-specific patterns. The analysis presents parallel rankings of ADHD prevalence and provider access but does not establish a causal relationship between these metrics.
Sources
[1]. Centers for Disease Control and Prevention (CDC). National Survey of Children’s Health (NSCH), 2020–2022 data release. Data collected by the U.S. Census Bureau.
https://www.cdc.gov/nchs/nsch/
[2]. Health Resources and Services Administration (HRSA). Health Professional Shortage Area (HPSA) Designations Data, December 2025 update.
https://data.hrsa.gov/
[3]. Mental Health America. The State of Mental Health in America Report, 2024–2025.
https://mhanational.org/
[4]. United Health Foundation. America’s Health Rankings Annual Report, 2024.
https://www.americashealthrankings.org/
[5]. University of Wisconsin Population Health Institute. County Health Rankings & Roadmaps, 2024–2025.
https://www.countyhealthrankings.org/
[6]. IQVIA Institute for Human Data Science. National Prescription Audit (NPA), U.S. Prescription Trends 2012–2023.
https://www.iqvia.com/insights/the-iqvia-institute
[7]. Kessler RC, Adler L, Barkley R, et al. The prevalence and correlates of adult ADHD in the United States. American Journal of Psychiatry. 2006;163(4):716–723.
https://doi.org/10.1176/ajp.2006.163.4.716
[8]. CHADD (Children and Adults with Attention-Deficit/Hyperactivity Disorder). ADHD Research and Statistics.
https://chadd.org/
