Connecticut Business Registration Data

Search for CT businesses registered with the Secretary of the State.


'Date Formed' is the date the entity first filed with the Office of the Secretary of the State and is used as the 'Start Date' within the database.

Domestic (CT) entities use the terms "organization" or "formation" to signify when the business first forms. Foreign (outside CT) entities use the term "registration" to signify the day they registered with The Secretary of the State as doing business in the state of CT.

Frequently Asked Questions

When is the database updated?

Data are updated weekly.

How does this data compare to statistics reported elsewhere?

The primary purpose of this portal is to enable easy lookup of business records. The complexity of how business activity is tracked and recorded makes certain types of searches more difficult. For example, we provide the ability to limit search results by date of formation. The Connecticut Secretary of the State remains the official source for data on business activity in Connecticut.

How far back does the data go?

The oldest company in the database is from 1803, therefore, the search goes as far back as that year. However, most business dating back to that time are cemeteries and churches, so if you’re doing an advanced search by time, be mindful of the time period used. The more years, the more data, and it will take a bit longer.

What is a foreign company?

A foreign company is a company that is domiciled outside CT – so could be in another state in the United States or outside the U.S.

Where is the industry information?

In the formation filings, businesses are not required to indicate their industry (NAICS code), therefore industry data are not present in this database.

Which address is visible?

In the table of search results, the business address is provided if it is in the record, if not, the mailing address will be listed, and if no address is present in the filings, than an address will not appear in the table.

What if I need to run a more complex data query?

We may be able to run a custom query for you for a fee. Please contact us at

Can I view or download a business filing?

You might be able to download a business filing through CONCORD for free if the business submitted the filing electronically. Alternatively, you can request a physical copy from the SOTS for a fee. See Copies of Our Records page for more details.

Is there an API?

There is no API available.

If you have additional questions or feedback, please send us an email.