Businesses in Lake Forest, Illinois

As of October 20, 2026, ListRiver's records show 3,999 active registered businesses in Lake Forest, Illinois, the 46th most among Illinois cities. 62% are LLCs. 26 were formed in September 2026.

From official Illinois registry records, updated weekly. Most Lake Forest businesses are in Lake County. Look up a Illinois business by name.

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Businesses on record

3,999

Formed in the last 12 months

396

Formed in September

With a phone number

286 records

New Lake Forest businesses per month

Businesses on record by formation month, through September 2026. Monthly Illinois new-business reports · Get the list of 26 new businesses formed in September 2026

Entity types

LLCs2,484 · 62%
Corporations904 · 23%
Nonprofits582 · 15%
Other15 · 0%
Limited partnerships14 · 0%

Top ZIP codes

ZIP 600453,984 · 100%
ZIP 600483 · 0%
ZIP 607073 · 0%
ZIP 600562 · 0%
ZIP 606452 · 0%
ZIP 604541 · 0%
ZIP 600551 · 0%
ZIP 600251 · 0%
ZIP 600441 · 0%
ZIP 606461 · 0%

Newest business names registered in Lake Forest

Get all 3,999 Lake Forest businesses · see price Just the 82 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	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	Nonprofit	Oct 2026
Name hidden	Lake Forest	Nonprofit	Oct 2026
Name hidden	Lake Forest	Corporation	Oct 2026
Name hidden	Lake Forest	Corporation	Oct 2026
Name hidden	Lake Forest	Corporation	Oct 2026
Name hidden	Lake Forest	LLC	Oct 2026
Name hidden	Lake Forest	LLC	Sep 2026
Name hidden	Lake Forest	LLC	Sep 2026
Name hidden	Lake Forest	LLC	Sep 2026
Name hidden	Lake Forest	LLC	Sep 2026
Name hidden	Lake Forest	LLC	Sep 2026

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Common questions about Lake Forest businesses

How many businesses are registered in Lake Forest, Illinois?

ListRiver has 3,999 active registered businesses in Lake Forest, Illinois on record as of October 20, 2026, from official Illinois business registry data. Dissolved and defunct businesses are not counted.

How many new businesses were formed in Lake Forest, Illinois in September 2026?

26 businesses on record in Lake Forest, Illinois were formed in September 2026.

How many new businesses opened in Lake Forest, Illinois in the last 12 months?

396 businesses on record in Lake Forest, Illinois were formed in the 12 months through September 2026.

What is the most common type of business in Lake Forest, Illinois?

LLCs are the most common: 2,484 of 3,999 businesses on record (62%), followed by Corporations with 904 (23%).

Where does this data come from?

From Illinois'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 Lake Forest, Illinois?

Use ListRiver's list builder to filter Lake Forest, Illinois 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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<div style="max-width:520px"><iframe src="https://listriver.com/embed/new-businesses/illinois/lake-forest" title="New businesses in Lake Forest, Illinois 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/illinois/lake-forest">Businesses in Lake Forest, Illinois</a>, ListRiver</p></div>

About this data

Counts come from official Illinois business registry records on file with ListRiver, current as of October 20, 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.