Businesses in Countryside, Illinois

As of October 20, 2026, ListRiver's records show 1,070 active registered businesses in Countryside, Illinois. 50% are Corporations. 10 were formed in September 2026.

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

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Businesses on record
1,070
Formed in the last 12 months
113
Formed in September
10
With a phone number
10%
108 records

New Countryside businesses per month

0715Oct 2024: 4Oct 24Nov 2024: 8Dec 2024: 2Jan 2025: 32025Feb 2025: 11Mar 2025: 15Apr 2025: 7May 2025: 4Jun 2025: 14Jul 2025: 12Aug 2025: 4Sep 2025: 6Oct 2025: 6Nov 2025: 7Dec 2025: 13Jan 2026: 52026Feb 2026: 10Mar 2026: 9Apr 2026: 13May 2026: 12Jun 2026: 8Jul 2026: 14Aug 2026: 6Sep 2026: 10

Businesses on record by formation month, through September 2026. Monthly Illinois new-business reports · Get the list of 10 new businesses formed in September 2026

Entity types

  • Corporations538 · 50%
  • LLCs475 · 44%
  • Nonprofits57 · 5%

Top ZIP codes

Newest business names registered in Countryside

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BusinessCityTypeFormed
Name hiddenCountrysideLLCOct 2026
Name hiddenCountrysideLLCOct 2026
Name hiddenCountrysideLLCOct 2026
Name hiddenCountrysideLLCOct 2026
Name hiddenCountrysideCorporationOct 2026
Name hiddenCountrysideCorporationOct 2026
Name hiddenCountrysideCorporationOct 2026
Name hiddenCountrysideLLCSep 2026
Name hiddenCountrysideLLCSep 2026
Name hiddenCountrysideLLCSep 2026
Name hiddenCountrysideLLCSep 2026
Name hiddenCountrysideLLCSep 2026
Name hiddenCountrysideLLCSep 2026
Name hiddenCountrysideLLCSep 2026
Name hiddenCountrysideCorporationSep 2026
Name hiddenCountrysideCorporationSep 2026
Name hiddenCountrysideCorporationSep 2026
Name hiddenCountrysideLLCAug 2026
Name hiddenCountrysideLLCAug 2026
Name hiddenCountrysideLLCAug 2026
Name hiddenCountrysideLLCAug 2026
Name hiddenCountrysideLLCAug 2026
Name hiddenCountrysideLLCAug 2026
Name hiddenCountrysideLLCJul 2026
Name hiddenCountrysideLLCJul 2026

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Common questions about Countryside businesses

How many businesses are registered in Countryside, Illinois?

ListRiver has 1,070 active registered businesses in Countryside, 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 Countryside, Illinois in September 2026?

10 businesses on record in Countryside, Illinois were formed in September 2026.

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

113 businesses on record in Countryside, Illinois were formed in the 12 months through September 2026.

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

Corporations are the most common: 538 of 1,070 businesses on record (50%), followed by LLCs with 475 (44%).

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 Countryside, Illinois?

Use ListRiver's list builder to filter Countryside, 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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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.