Businesses in Southold, New York

As of October 15, 2026, ListRiver's records show 1,388 active registered businesses in Southold, New York. 57% are LLCs. 4 were formed in September 2026.

From official New York registry records, updated weekly. Most Southold businesses are in Suffolk County. Look up a New York business by name.

Businesses on record
1,388
Formed in the last 12 months
60
Formed in September
4
With a registered agent
14%
198 records

New Southold businesses per month

0510Oct 2024: 7Oct 24Nov 2024: 5Dec 2024: 7Jan 2025: 92025Feb 2025: 5Mar 2025: 10Apr 2025: 6May 2025: 4Jun 2025: 5Jul 2025: 2Aug 2025: 0Sep 2025: 3Oct 2025: 7Nov 2025: 7Dec 2025: 3Jan 2026: 72026Feb 2026: 7Mar 2026: 3Apr 2026: 5May 2026: 7Jun 2026: 4Jul 2026: 2Aug 2026: 4Sep 2026: 4

Businesses on record by formation month, through September 2026. Monthly New York new-business reports · Get the list of 4 new businesses formed in September 2026

Entity types

  • LLCs793 · 57%
  • Corporations547 · 39%
  • Other42 · 3%
  • Limited partnerships4 · 0%
  • Nonprofits2 · 0%

Top ZIP codes

Newest business names registered in Southold

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BusinessCityTypeFormed
Name hiddenSoutholdLLCOct 2026
Name hiddenSoutholdLLCSep 2026
Name hiddenSoutholdLLCSep 2026
Name hiddenSoutholdLLCSep 2026
Name hiddenSoutholdLLCSep 2026
Name hiddenSoutholdCorporationAug 2026
Name hiddenSoutholdCorporationAug 2026
Name hiddenSoutholdLLCAug 2026
Name hiddenSoutholdLLCAug 2026
Name hiddenSoutholdLLCJul 2026
Name hiddenSoutholdLLCJul 2026
Name hiddenSoutholdCorporationJun 2026
Name hiddenSoutholdLLCJun 2026
Name hiddenSoutholdCorporationJun 2026
Name hiddenSoutholdLLCJun 2026
Name hiddenSoutholdOtherMay 2026
Name hiddenSoutholdLLCMay 2026
Name hiddenSoutholdLLCMay 2026
Name hiddenSoutholdLLCMay 2026
Name hiddenSoutholdLLCMay 2026
Name hiddenSoutholdLLCMay 2026
Name hiddenSoutholdLLCMay 2026
Name hiddenSoutholdLLCApr 2026
Name hiddenSoutholdLLCApr 2026
Name hiddenSoutholdCorporationApr 2026

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Common questions about Southold businesses

How many businesses are registered in Southold, New York?

ListRiver has 1,388 active registered businesses in Southold, 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 Southold, New York in September 2026?

4 businesses on record in Southold, New York were formed in September 2026.

How many new businesses opened in Southold, New York in the last 12 months?

60 businesses on record in Southold, New York were formed in the 12 months through September 2026.

What is the most common type of business in Southold, New York?

LLCs are the most common: 793 of 1,388 businesses on record (57%), followed by Corporations with 547 (39%).

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 Southold, New York?

Use ListRiver's list builder to filter Southold, 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.