Businesses in Groton, Connecticut

As of October 15, 2026, ListRiver's records show 1,697 active registered businesses in Groton, Connecticut. 84% are LLCs. 22 were formed in September 2026.

From official Connecticut registry records, updated weekly. Most Groton businesses are in Southeastern Connecticut Planning Region. Look up a Connecticut business by name.

Businesses on record
1,697
Formed in the last 12 months
269
Formed in September
22
With a phone number
10%
170 records

New Groton businesses per month

02040Oct 2024: 13Oct 24Nov 2024: 10Dec 2024: 9Jan 2025: 172025Feb 2025: 19Mar 2025: 22Apr 2025: 18May 2025: 23Jun 2025: 23Jul 2025: 20Aug 2025: 19Sep 2025: 16Oct 2025: 26Nov 2025: 20Dec 2025: 16Jan 2026: 212026Feb 2026: 24Mar 2026: 21Apr 2026: 23May 2026: 38Jun 2026: 29Jul 2026: 11Aug 2026: 18Sep 2026: 22

Businesses on record by formation month, through September 2026. Monthly Connecticut new-business reports · Get the list of 22 new businesses formed in September 2026

Entity types

  • LLCs1,429 · 84%
  • Corporations147 · 9%
  • Nonprofits109 · 6%
  • LLPs5 · 0%
  • Limited partnerships5 · 0%
  • Other2 · 0%

Top ZIP codes

Industries (where known)

  • Real Estate344 · 21%
  • Other Services201 · 12%
  • Retail Trade181 · 11%
  • Professional & Technical Services172 · 10%
  • Construction140 · 9%
  • Accommodation & Food Services133 · 8%
  • Health Care & Social Assistance107 · 7%
  • Administrative & Support Services74 · 5%
  • Arts, Entertainment & Recreation59 · 4%
  • Manufacturing58 · 4%

Newest business names registered in Groton

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Common questions about Groton businesses

How many businesses are registered in Groton, Connecticut?

ListRiver has 1,697 active registered businesses in Groton, 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 Groton, Connecticut in September 2026?

22 businesses on record in Groton, Connecticut were formed in September 2026.

How many new businesses opened in Groton, Connecticut in the last 12 months?

269 businesses on record in Groton, Connecticut were formed in the 12 months through September 2026.

What is the most common type of business in Groton, Connecticut?

LLCs are the most common: 1,429 of 1,697 businesses on record (84%), followed by Corporations with 147 (9%).

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 Groton, Connecticut?

Use ListRiver's list builder to filter Groton, 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.