As of October 20, 2026, ListRiver's records show 1,466 active registered businesses in Alton, Illinois. 63% are LLCs. 27 were formed in September 2026.
How many businesses are registered in Alton, Illinois?
ListRiver has 1,466 active registered businesses in Alton, 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 Alton, Illinois in September 2026?
27 businesses on record in Alton, Illinois were formed in September 2026.
How many new businesses opened in Alton, Illinois in the last 12 months?
238 businesses on record in Alton, Illinois were formed in the 12 months through September 2026.
What is the most common type of business in Alton, Illinois?
LLCs are the most common: 925 of 1,466 businesses on record (63%), followed by Corporations with 284 (19%).
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 Alton, Illinois?
Use ListRiver's list builder to filter Alton, 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.