Businesses in Janesville, Iowa

As of October 12, 2026, ListRiver's records show 168 active registered businesses in Janesville, Iowa. 74% are LLCs. 2 were formed in September 2026.

From official Iowa registry records, updated weekly. Most Janesville businesses are in Bremer County. Look up a Iowa business by name.

Businesses on record

168

Formed in the last 12 months

Formed in September

With a phone number

12 records

New Janesville businesses per month

Businesses on record by formation month, through September 2026. Monthly Iowa new-business reports · Get the list of 2 new businesses formed in September 2026

Entity types

LLCs125 · 74%
Corporations25 · 15%
Nonprofits18 · 11%

Top ZIP codes

ZIP 50647166 · 99%
ZIP 504671 · 1%
ZIP 506221 · 1%

Newest business names registered in Janesville

Get all 168 Janesville businesses · see price Just the 4 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	Janesville	LLC	Sep 2026
Name hidden	Janesville	LLC	Sep 2026
Name hidden	Janesville	LLC	Aug 2026
Name hidden	Janesville	LLC	Aug 2026
Name hidden	Janesville	Corporation	Jul 2026
Name hidden	Janesville	LLC	Apr 2026
Name hidden	Janesville	Corporation	Apr 2026
Name hidden	Janesville	LLC	Mar 2026
Name hidden	Janesville	LLC	Mar 2026
Name hidden	Janesville	LLC	Mar 2026
Name hidden	Janesville	LLC	Feb 2026
Name hidden	Janesville	LLC	Feb 2026
Name hidden	Janesville	LLC	Jan 2026
Name hidden	Janesville	LLC	Nov 2025
Name hidden	Janesville	LLC	Nov 2025
Name hidden	Janesville	LLC	Sep 2025
Name hidden	Janesville	LLC	Jul 2025
Name hidden	Janesville	LLC	Jul 2025
Name hidden	Janesville	LLC	Jul 2025
Name hidden	Janesville	LLC	Jun 2025
Name hidden	Janesville	Nonprofit	May 2025
Name hidden	Janesville	Corporation	May 2025
Name hidden	Janesville	LLC	Apr 2025
Name hidden	Janesville	LLC	Mar 2025
Name hidden	Janesville	LLC	Feb 2025

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Common questions about Janesville businesses

How many businesses are registered in Janesville, Iowa?

ListRiver has 168 active registered businesses in Janesville, Iowa on record as of October 12, 2026, from official Iowa business registry data. Dissolved and defunct businesses are not counted.

How many new businesses were formed in Janesville, Iowa in September 2026?

2 businesses on record in Janesville, Iowa were formed in September 2026.

How many new businesses opened in Janesville, Iowa in the last 12 months?

15 businesses on record in Janesville, Iowa were formed in the 12 months through September 2026.

What is the most common type of business in Janesville, Iowa?

LLCs are the most common: 125 of 168 businesses on record (74%), followed by Corporations with 25 (15%).

Where does this data come from?

From Iowa'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 Janesville, Iowa?

Use ListRiver's list builder to filter Janesville, Iowa 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/iowa/janesville" title="New businesses in Janesville, Iowa 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/iowa/janesville">Businesses in Janesville, Iowa</a>, ListRiver</p></div>

About this data

Counts come from official Iowa business registry records on file with ListRiver, current as of October 12, 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.