Businesses in Southeastern Connecticut Planning Region, Connecticut

As of October 15, 2026, ListRiver's records show 21,246 active registered businesses in Southeastern Connecticut Planning Region, Connecticut, the 6th most among Connecticut counties. 84% are LLCs. 242 were formed in September 2026. That is 5% of all Connecticut businesses on record.

From official Connecticut registry records, updated weekly. Look up a Connecticut business by name.

Businesses on record
21,246
Formed in the last 12 months
2,873
Formed in September
242
With a phone number
10%
2,177 records

New Southeastern Connecticut Planning Region businesses per month

0150300Oct 2024: 191Oct 24Nov 2024: 161Dec 2024: 154Jan 2025: 2142025Feb 2025: 177Mar 2025: 231Apr 2025: 209May 2025: 212Jun 2025: 199Jul 2025: 234Aug 2025: 210Sep 2025: 194Oct 2025: 219Nov 2025: 201Dec 2025: 199Jan 2026: 2512026Feb 2026: 244Mar 2026: 292Apr 2026: 262May 2026: 257Jun 2026: 244Jul 2026: 232Aug 2026: 230Sep 2026: 242

Businesses on record by formation month, through September 2026. Monthly Connecticut new-business reports · Get the list of 242 new businesses formed in September 2026

Entity types

  • LLCs17,818 · 84%
  • Nonprofits1,661 · 8%
  • Corporations1,641 · 8%
  • LLPs52 · 0%
  • Limited partnerships42 · 0%
  • Other32 · 0%

Top cities

Top ZIP codes

Industries (where known)

  • Real Estate4,602 · 22%
  • Other Services2,439 · 12%
  • Construction2,290 · 11%
  • Professional & Technical Services2,080 · 10%
  • Retail Trade1,711 · 8%
  • Health Care & Social Assistance1,123 · 5%
  • Accommodation & Food Services1,074 · 5%
  • Administrative & Support Services1,023 · 5%
  • Arts, Entertainment & Recreation828 · 4%
  • Manufacturing707 · 3%

Newest business names registered in Southeastern Connecticut Planning Region

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BusinessCityTypeFormed
Name hiddenJewett CityLLCOct 2026
Name hiddenJewett CityLLCOct 2026
Name hiddenGrotonLLCOct 2026
Name hiddenWaterfordLLCOct 2026
Name hiddenWaterfordLLCOct 2026
Name hiddenNorth StoningtonLLCOct 2026
Name hiddenNew LondonLLCOct 2026
Name hiddenBozrahLLCOct 2026
Name hiddenJewett CityLLCOct 2026
Name hiddenLedyardLLCOct 2026
Name hiddenMysticLLCOct 2026
Name hiddenWillimanticLLCOct 2026
Name hiddenQuaker HillLLCOct 2026
Name hiddenMysticCorporationOct 2026
Name hiddenOakdaleLLCOct 2026
Name hiddenNew LondonLLCOct 2026
Name hiddenJewett CityLLCOct 2026
Name hiddenWaterfordLLCOct 2026
Name hiddenUncasvilleLLCOct 2026
Name hiddenNianticLLCOct 2026
Name hiddenNorwichLLCOct 2026
Name hiddenPrestonLLCOct 2026
Name hiddenNorth FranklinLLCOct 2026
Name hiddenMysticLLCOct 2026
Name hiddenGrotonLLCOct 2026

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Common questions about Southeastern Connecticut Planning Region businesses

How many businesses are registered in Southeastern Connecticut Planning Region, Connecticut?

ListRiver has 21,246 active registered businesses in Southeastern Connecticut Planning Region, 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 Southeastern Connecticut Planning Region, Connecticut in September 2026?

242 businesses on record in Southeastern Connecticut Planning Region, Connecticut were formed in September 2026.

How many new businesses opened in Southeastern Connecticut Planning Region, Connecticut in the last 12 months?

2,873 businesses on record in Southeastern Connecticut Planning Region, Connecticut were formed in the 12 months through September 2026.

What is the most common type of business in Southeastern Connecticut Planning Region, Connecticut?

LLCs are the most common: 17,818 of 21,246 businesses on record (84%), followed by Nonprofits with 1,661 (8%).

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 Southeastern Connecticut Planning Region, Connecticut?

Use ListRiver's list builder to filter Southeastern Connecticut Planning Region, 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.

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About this data

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.