Businesses in Middlefield, Connecticut

As of October 15, 2026, ListRiver's records show 442 active registered businesses in Middlefield, Connecticut. 86% are LLCs. 3 were formed in September 2026.

From official Connecticut registry records, updated weekly. Most Middlefield businesses are in Lower Connecticut River Valley Planning Region. Look up a Connecticut business by name.

Businesses on record

442

Formed in the last 12 months

Formed in September

With a phone number

12%

53 records

New Middlefield businesses per month

Businesses on record by formation month, through September 2026. Monthly Connecticut new-business reports · Get the list of 3 new businesses formed in September 2026

Entity types

LLCs378 · 86%
Corporations42 · 10%
Nonprofits19 · 4%
Other2 · 0%
LLPs1 · 0%

Top ZIP codes

ZIP 06455436 · 99%
ZIP 064812 · 0%
ZIP 064502 · 0%
ZIP 064921 · 0%
ZIP 064571 · 0%

Industries (where known)

Real Estate114 · 27%
Construction65 · 15%
Professional & Technical Services41 · 10%
Other Services37 · 9%
Retail Trade33 · 8%
Health Care & Social Assistance27 · 6%
Agriculture, Forestry, Fishing26 · 6%
Manufacturing21 · 5%
Finance & Insurance11 · 3%
Administrative & Support Services10 · 2%

Newest business names registered in Middlefield

Get all 442 Middlefield businesses · see price Just the 6 formed in the last 90 days · see price

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This is a small sample, not the full list. To keep automated scrapers from copying our data, we only show a handful of records on public pages. Your downloaded list includes every matching business.

Business	City	Type	Formed
Name hidden	Middlefield	LLC	Sep 2026
Name hidden	Middlefield	Corporation	Sep 2026
Name hidden	Middlefield	LLC	Sep 2026
Name hidden	Middlefield	LLC	Aug 2026
Name hidden	Middlefield	LLC	Aug 2026
Name hidden	Middlefield	LLC	Aug 2026
Name hidden	Middlefield	LLC	Jul 2026
Name hidden	Middlefield	LLC	Jul 2026
Name hidden	Middlefield	LLC	Jun 2026
Name hidden	Middlefield	LLC	Jun 2026
Name hidden	Middlefield	LLC	May 2026
Name hidden	Middlefield	Nonprofit	May 2026
Name hidden	Middlefield	Other	Apr 2026
Name hidden	Middlefield	LLC	Apr 2026
Name hidden	Middlefield	LLC	Apr 2026
Name hidden	Middlefield	LLC	Apr 2026
Name hidden	Middlefield	LLC	Mar 2026
Name hidden	Middlefield	LLC	Mar 2026
Name hidden	Middlefield	LLC	Mar 2026
Name hidden	Middlefield	LLC	Mar 2026
Name hidden	Middlefield	LLC	Mar 2026
Name hidden	Middlefield	LLC	Mar 2026
Name hidden	Middlefield	LLC	Mar 2026
Name hidden	Middlefield	LLC	Feb 2026
Name hidden	Middlefield	LLC	Feb 2026

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Common questions about Middlefield businesses

How many businesses are registered in Middlefield, Connecticut?

ListRiver has 442 active registered businesses in Middlefield, 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 Middlefield, Connecticut in September 2026?

3 businesses on record in Middlefield, Connecticut were formed in September 2026.

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

45 businesses on record in Middlefield, Connecticut were formed in the 12 months through September 2026.

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

LLCs are the most common: 378 of 442 businesses on record (86%), followed by Corporations with 42 (10%).

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 Middlefield, Connecticut?

Use ListRiver's list builder to filter Middlefield, 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.

More Connecticut business lists

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<div style="max-width:520px"><iframe src="https://listriver.com/embed/new-businesses/connecticut/middlefield" title="New businesses in Middlefield, Connecticut by month" width="100%" height="370" style="border:0" loading="lazy"></iframe><p style="font:13px sans-serif;margin:4px 0 0">Source: <a href="https://listriver.com/business-lists/connecticut/middlefield">Businesses in Middlefield, Connecticut</a>, ListRiver</p></div>

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.