Businesses in South Wilmington, Illinois

As of October 20, 2026, ListRiver's records show 27 active registered businesses in South Wilmington, Illinois. 56% are LLCs. 3 were formed in September 2026.

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

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Businesses on record

Formed in the last 12 months

Formed in September

With a phone number

11%

3 records

New South Wilmington businesses per month

Businesses on record by formation month, through September 2026. Monthly Illinois new-business reports · Get the list of 3 new businesses formed in September 2026

Entity types

LLCs15 · 56%
Corporations8 · 30%
Nonprofits4 · 15%

Top ZIP codes

ZIP 6047426 · 96%
ZIP 604761 · 4%

Newest business names registered in South Wilmington

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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	South Wilmington	LLC	Sep 2026
Name hidden	South Wilmington	LLC	Sep 2026
Name hidden	South Wilmington	Corporation	Sep 2026
Name hidden	South Wilmington	LLC	Aug 2026
Name hidden	South Wilmington	LLC	Aug 2026
Name hidden	South Wilmington	LLC	Feb 2026
Name hidden	South Wilmington	LLC	Dec 2025
Name hidden	South Wilmington	LLC	Oct 2025
Name hidden	South Wilmington	LLC	Jul 2025
Name hidden	South Wilmington	LLC	Dec 2024
Name hidden	South Wilmington	LLC	Dec 2024
Name hidden	South Wilmington	LLC	Mar 2023
Name hidden	South Wilmington	LLC	Dec 2021
Name hidden	South Wilmington	LLC	Dec 2021
Name hidden	South Wilmington	LLC	Jul 2021
Name hidden	South Wilmington	Corporation	Jun 2017
Name hidden	South Wilmington	Corporation	Feb 2015
Name hidden	South Wilmington	Corporation	Oct 2009
Name hidden	South Wilmington	Corporation	Nov 2005
Name hidden	South Wilmington	LLC	Sep 2003
Name hidden	South Wilmington	Corporation	May 2001
Name hidden	South Wilmington	Nonprofit	Jan 2001
Name hidden	South Wilmington	Corporation	Jan 2000
Name hidden	South Wilmington	Corporation	Oct 1996
Name hidden	South Wilmington	Nonprofit	Aug 1964

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Common questions about South Wilmington businesses

How many businesses are registered in South Wilmington, Illinois?

ListRiver has 27 active registered businesses in South Wilmington, 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 South Wilmington, Illinois in September 2026?

3 businesses on record in South Wilmington, Illinois were formed in September 2026.

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

8 businesses on record in South Wilmington, Illinois were formed in the 12 months through September 2026.

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

LLCs are the most common: 15 of 27 businesses on record (56%), followed by Corporations with 8 (30%).

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 South Wilmington, Illinois?

Use ListRiver's list builder to filter South Wilmington, 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/south-wilmington" title="New businesses in South Wilmington, 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/south-wilmington">Businesses in South Wilmington, 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.