The Delaware Mental Health Workforce
Delaware has 4,511 active mental-health providers registered at practice addresses in the state, or 425.6 per 100,000 residents. That ranks 27 of 51 nationally, against a US average of 433.5.
4,511
active providers
425.6
per 100,000 residents
#27
of 51 jurisdictions by density
Key findings
- Delaware registers 425.6 active providers per 100,000 residents. That ranks 27 of 51 jurisdictions, below the national 433.5. #
- New Castle County has the state's highest registered density (515.7 per 100k). #
- Counselors are the largest group at 38.9% of Delaware's registered workforce, compared with 43.9% nationally. #
- 243 providers with a Delaware practice address first entered the NPI registry in 2025, versus 253 in 2019. These are registry entries, not licenses issued. #
- 56% of Delaware providers share a registered practice location with six or more in-scope providers. #
Providers per 100,000 by county
Providers are allocated to counties from their practice ZIP code. The same values appear in the table.
| County | Population | Providers | Per 100k |
|---|---|---|---|
| New Castle County | 588,026 | 3,033 | 515.7 |
| Kent County | 194,786 | 757 | 388.7 |
| Sussex County | 277,140 | 717 | 258.8 |
Provider-type mix vs the national picture
Each provider counts once under their primary taxonomy; the US share is printed beside each Delaware figure for comparison.
When Delaware's providers entered the registry
This chart shows active providers by the year they entered the NPI registry. Registry entry is not licensure. Clinicians typically register when they start billing, so this measures registrations, not the workforce itself. 2026 is a partial year.
Practice-location size
This shows the share of Delawareproviders at single- and multi-provider practice locations, grouped by normalized practice address. It's only a proxy, so see the limitations below.
Get the numbers
County-level figures for all states (including Delaware) are in the county CSV; state totals and mix are in their own files. Everything is CC BY 4.0, so cite certification.app, "US Mental Health Workforce" (June 2026 NPPES snapshot).
Use this chart
<a href="https://www.certification.app/data/mental-health-workforce"><img src="https://www.certification.app/data/mental-health-workforce/charts/de-county-density.svg" alt="Delaware mental health providers per 100,000 residents by county" width="100%" /></a> <p style="font-size:12px">"Delaware mental health providers per 100k by county, June 2026 snapshot" by <a href="https://www.certification.app/data/mental-health-workforce">certification.app</a>, CC BY 4.0</p>
Reading these numbers
Counts are NPPES registrations at Delawarepractice addresses. They are headcounts, not FTEs or license tallies. Telehealth and multi-state practice don't show up, a self-designated taxonomy isn't license verification, and the registry lags behind moves and retirements. The methodology page has the details.