How to search Colorado business entities online

Colorado's business entity database is searchable at coloradosos.gov — Business Entity Search, operated by the Colorado Department of State (the official name of the office; the elected official is the Secretary of State). A single search field accepts a business name, trade name, trademark, entity ID number, or document number — all in one query.

What the search covers

The database is a single registry covering all entity types filed with the Department of State:

• Profit corporations and nonprofit corporations
• Limited liability companies
• Limited partnerships, limited liability partnerships, limited liability limited partnerships
• Limited cooperative associations and limited partnership associations
• Trade names and trademarks
• Unincorporated nonprofit associations
• Foreign entities of all above types

Name search tips

The Department publishes search guidance worth knowing before you start:

• Punctuation doesn't help — omit it entirely
• Initials run together as one word: "A.C.E. Computers" is indexed as "ACE Computers"
• "A," "An," and "The" sort as part of the name, not as leading articles: "An Original Company" sorts under "A," not "O"
• Results are alphabetical; if more than 20 match, they paginate — clicking a column header re-sorts
• When a name search yields too many results, try switching to the 11-digit entity ID for a precise single-record lookup

Entity detail page

Each entity record shows the 11-digit entity ID, entity name, current status (Good Standing, Delinquent, Dissolved, or other), entity type, jurisdiction, formation date, principal office address, registered agent name and address, and a list of all filed documents. Filed documents are freely accessible — no account needed, no fee.

Colorado also provides a Certificate of Good Standing lookup at coloradosos.gov — Certificate of Good Standing Search. The certificate is generated online at no charge. Certified copies for formal legal purposes require a mail-in order with a fee.

Email alerts and bulk data

The Department offers free email notification alerts when changes are filed for any entity. Set up alerts at coloradosos.gov — Email Notifications. Complete entity, trademark, and trade name datasets are available for bulk download at no charge through Colorado's open data portal at data.colorado.gov.

This guide is informational only and is not affiliated with the Colorado Department of State. Verify current procedures at coloradosos.gov — Business Home. Source: Colorado Department of State, verified May 2026.