As of October 20, 2026, ListRiver's records show 1,307 active registered businesses in Oak Forest, Illinois. 56% are LLCs. 22 were formed in September 2026.
How many businesses are registered in Oak Forest, Illinois?
ListRiver has 1,307 active registered businesses in Oak 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 Oak Forest, Illinois in September 2026?
22 businesses on record in Oak Forest, Illinois were formed in September 2026.
How many new businesses opened in Oak Forest, Illinois in the last 12 months?
274 businesses on record in Oak Forest, Illinois were formed in the 12 months through September 2026.
What is the most common type of business in Oak Forest, Illinois?
LLCs are the most common: 731 of 1,307 businesses on record (56%), followed by Corporations with 484 (37%).
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 Oak Forest, Illinois?
Use ListRiver's list builder to filter Oak 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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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.