Businesses in St. Lawrence County, New York

As of October 15, 2026, ListRiver's records show 5,400 active registered businesses in St. Lawrence County, New York, the 38th most among New York counties. 64% are LLCs. 39 were formed in September 2026.

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

Businesses on record
5,400
Formed in the last 12 months
416
Formed in September
39
With a registered agent
23%
1,219 records

New St. Lawrence County businesses per month

02550Oct 2024: 21Oct 24Nov 2024: 23Dec 2024: 26Jan 2025: 262025Feb 2025: 16Mar 2025: 33Apr 2025: 35May 2025: 29Jun 2025: 34Jul 2025: 31Aug 2025: 30Sep 2025: 35Oct 2025: 36Nov 2025: 39Dec 2025: 27Jan 2026: 342026Feb 2026: 40Mar 2026: 38Apr 2026: 48May 2026: 39Jun 2026: 29Jul 2026: 22Aug 2026: 25Sep 2026: 39

Businesses on record by formation month, through September 2026. Monthly New York new-business reports · Get the list of 39 new businesses formed in September 2026

Entity types

  • LLCs3,436 · 64%
  • Corporations1,816 · 34%
  • Other124 · 2%
  • Limited partnerships14 · 0%
  • Nonprofits5 · 0%
  • LLPs5 · 0%

Top cities

Top ZIP codes

Newest business names registered in St. Lawrence County

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BusinessCityTypeFormed
Name hiddenHermonLLCOct 2026
Name hiddenPotsdamLLCOct 2026
Name hiddenCantonLLCSep 2026
Name hiddenHannawa FallsLLCSep 2026
Name hiddenOgdensburgLLCSep 2026
Name hiddenNicholvilleLLCSep 2026
Name hiddenGouverneurLLCSep 2026
Name hiddenMassenaLLCSep 2026
Name hiddenCantonLLCSep 2026
Name hiddenLisbonLLCSep 2026
Name hiddenPotsdamLLCSep 2026
Name hiddenBrasher FallsLLCSep 2026
Name hiddenGouverneurLLCSep 2026
Name hiddenOgdensburgLLCSep 2026
Name hiddenPotsdamLLCSep 2026
Name hiddenBrasher FallsLLCSep 2026
Name hiddenCantonLLCSep 2026
Name hiddenNorwoodLLCSep 2026
Name hiddenMassenaLLCSep 2026
Name hiddenPotsdamLLCSep 2026
Name hiddenStar LakeCorporationSep 2026
Name hiddenGouverneurLLCSep 2026
Name hiddenHammondCorporationSep 2026
Name hiddenLisbonLLCSep 2026
Name hiddenNorfolkLLCSep 2026

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Common questions about St. Lawrence County businesses

How many businesses are registered in St. Lawrence County, New York?

ListRiver has 5,400 active registered businesses in St. Lawrence County, New York on record as of October 15, 2026, from official New York business registry data. Dissolved and defunct businesses are not counted.

How many new businesses were formed in St. Lawrence County, New York in September 2026?

39 businesses on record in St. Lawrence County, New York were formed in September 2026.

How many new businesses opened in St. Lawrence County, New York in the last 12 months?

416 businesses on record in St. Lawrence County, New York were formed in the 12 months through September 2026.

What is the most common type of business in St. Lawrence County, New York?

LLCs are the most common: 3,436 of 5,400 businesses on record (64%), followed by Corporations with 1,816 (34%).

Where does this data come from?

From New York'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 St. Lawrence County, New York?

Use ListRiver's list builder to filter St. Lawrence County, New York 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 New York 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.