As of October 15, 2026, ListRiver's records show 3,872 active registered businesses in Darien, Connecticut, the 28th most among Connecticut cities. 82% are LLCs. 33 were formed in September 2026. That is 1% of all Connecticut businesses on record.
How many businesses are registered in Darien, Connecticut?
ListRiver has 3,872 active registered businesses in Darien, Connecticut on record as of October 15, 2026, from official Connecticut business registry data. Dissolved and defunct businesses are not counted.
How many new businesses were formed in Darien, Connecticut in September 2026?
33 businesses on record in Darien, Connecticut were formed in September 2026.
How many new businesses opened in Darien, Connecticut in the last 12 months?
431 businesses on record in Darien, Connecticut were formed in the 12 months through September 2026.
What is the most common type of business in Darien, Connecticut?
LLCs are the most common: 3,169 of 3,872 businesses on record (82%), followed by Corporations with 434 (11%).
Where does this data come from?
From Connecticut's official business registry. ListRiver loads each new state file, standardizes it, removes duplicates and updates its database weekly. Email and industry details are added from SMBCredit.net where available.
How do I get a list of businesses in Darien, Connecticut?
Use ListRiver's list builder to filter Darien, Connecticut businesses by entity type, formation date, industry and contact details, see the exact count and price, and download a CSV. Every list includes monthly refresh files.
Free to use on any site, and it updates itself every month. Copy this code and paste it into your page. Preview the chart.
Counts come from official Connecticut business registry records on file with ListRiver, current as of October 15, 2026. They include businesses that are active on the state register; dissolved and defunct entities are excluded. Contact details are added from SMBCredit.net where available. Formation months reflect the registration date the state reports. See the methodology for sources, update schedules and known limits.