✓ Verified · June 2026🏢 Register a Business Name
Register a Business Name in New Castle County, DE
Confirmed by phone with the New Castle County office. Here's what you need to know.
⚠️
In Delaware, DBA / Trade Name registration is NOT filed at any county office.
Delaware has no “County Clerk.” Trade Name registration is handled by Delaware One Stop under Title 6, Ch. 31.
File with:Delaware One Stop (Division of Revenue & Division of Corporations)
Delaware businesses register a Trade Name / DBA through the Delaware One Stop portal, which also issues your state business license. The Clerk of the Peace handles marriage licenses only — it has no role in business registration.
📋Office Information
📍
Office Address
800 N. French St., Second Floor, Wilmington, DE 19801
📞
Phone
(302) 395-5555🌐
Official Website
newcastlede.gov ↗✓
Verified · June 2026
The office details above were confirmed directly by phone with the New Castle County Clerk of the Peace office. Something changed? Let us know:
📝
Submit a Correction →Something look wrong?
Help us keep this page accurate for your community.