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 (US: 43.9%). #
- 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
Active providers by NPI registry-entry year. 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
Share of Delaware providers at single- vs multi-provider practice locations, by normalized practice address. This is a proxy; 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 Delaware practice addresses. They are headcounts, not FTEs or license tallies. Telehealth and multi-state practice are invisible; taxonomy self-designation is not license verification; the registry lags moves and retirements. Details: methodology.