Businesses in Carroll County, Illinois

As of October 20, 2026, ListRiver's records show 750 active registered businesses in Carroll County, Illinois. 62% are LLCs. 9 were formed in September 2026.

From official Illinois registry records, updated weekly. Look up a Illinois business by name.

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Businesses on record

750

Formed in the last 12 months

115

Formed in September

With a phone number

15%

116 records

New Carroll County businesses per month

Businesses on record by formation month, through September 2026. Monthly Illinois new-business reports · Get the list of 9 new businesses formed in September 2026

Entity types

LLCs466 · 62%
Corporations184 · 25%
Nonprofits99 · 13%
Limited partnerships1 · 0%

Top cities

Lanark181 · 24%
Mount Carroll148 · 20%
Savanna139 · 19%
Shannon88 · 12%
Chadwick65 · 9%
Milledgeville63 · 8%
Thomson57 · 8%
Lake Carroll3 · 0%
Saint Charles2 · 0%
Freeport1 · 0%
Maple Park1 · 0%
Sycamore1 · 0%
Roscoe1 · 0%

Top ZIP codes

ZIP 61046185 · 25%
ZIP 61053149 · 20%
ZIP 61074141 · 19%
ZIP 6107889 · 12%
ZIP 6101465 · 9%
ZIP 6105164 · 9%
ZIP 6128557 · 8%

Newest business names registered in Carroll County

Get all 750 Carroll County businesses · see price Just the 24 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	Mount Carroll	LLC	Oct 2026
Name hidden	Savanna	LLC	Oct 2026
Name hidden	Lanark	LLC	Oct 2026
Name hidden	Lanark	LLC	Oct 2026
Name hidden	Thomson	LLC	Oct 2026
Name hidden	Savanna	Corporation	Oct 2026
Name hidden	Lanark	Corporation	Oct 2026
Name hidden	Lanark	LLC	Sep 2026
Name hidden	Chadwick	LLC	Sep 2026
Name hidden	Mount Carroll	LLC	Sep 2026
Name hidden	Shannon	LLC	Sep 2026
Name hidden	Savanna	LLC	Sep 2026
Name hidden	Shannon	LLC	Sep 2026
Name hidden	Savanna	LLC	Sep 2026
Name hidden	Lanark	Corporation	Sep 2026
Name hidden	Thomson	Nonprofit	Sep 2026
Name hidden	Chadwick	LLC	Aug 2026
Name hidden	Savanna	LLC	Aug 2026
Name hidden	Lanark	LLC	Aug 2026
Name hidden	Shannon	LLC	Aug 2026
Name hidden	Mount Carroll	LLC	Aug 2026
Name hidden	Savanna	LLC	Aug 2026
Name hidden	Savanna	Corporation	Aug 2026
Name hidden	Lanark	Nonprofit	Aug 2026
Name hidden	Lanark	LLC	Jul 2026

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Common questions about Carroll County businesses

How many businesses are registered in Carroll County, Illinois?

ListRiver has 750 active registered businesses in Carroll County, 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 Carroll County, Illinois in September 2026?

9 businesses on record in Carroll County, Illinois were formed in September 2026.

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

115 businesses on record in Carroll County, Illinois were formed in the 12 months through September 2026.

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

LLCs are the most common: 466 of 750 businesses on record (62%), followed by Corporations with 184 (25%).

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 Carroll County, Illinois?

Use ListRiver's list builder to filter Carroll County, 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/carroll-county" title="New businesses in Carroll County, 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/carroll-county">Businesses in Carroll County, 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.