Businesses in West Mifflin, Pennsylvania

As of October 11, 2026, ListRiver's records show 1,720 active registered businesses in West Mifflin, Pennsylvania. 57% are LLCs. 4 were formed in September 2026.

From official Pennsylvania registry records, updated weekly. Most West Mifflin businesses are in Allegheny County. Look up a Pennsylvania business by name.

Businesses on record

1,720

Formed in the last 12 months

Formed in September

With a registered agent

18 records

New West Mifflin businesses per month

Businesses on record by formation month, through September 2026. Monthly Pennsylvania new-business reports · Get the list of 4 new businesses formed in September 2026

Entity types

LLCs988 · 57%
Corporations586 · 34%
Nonprofits116 · 7%
Limited partnerships29 · 2%
Other1 · 0%

Top ZIP codes

ZIP 151221,681 · 98%
ZIP 1523622 · 1%
ZIP 151206 · 0%
ZIP 152225 · 0%
ZIP 151122 · 0%
ZIP 151021 · 0%
ZIP 152211 · 0%
ZIP 151041 · 0%
ZIP 151321 · 0%

Newest business names registered in West Mifflin

Get all 1,720 West Mifflin businesses · see price Just the 12 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	West Mifflin	LLC	Sep 2026
Name hidden	West Mifflin	LLC	Sep 2026
Name hidden	West Mifflin	LLC	Sep 2026
Name hidden	West Mifflin	LLC	Sep 2026
Name hidden	West Mifflin	LLC	Aug 2026
Name hidden	West Mifflin	LLC	Aug 2026
Name hidden	West Mifflin	LLC	Aug 2026
Name hidden	West Mifflin	LLC	Aug 2026
Name hidden	West Mifflin	LLC	Aug 2026
Name hidden	West Mifflin	LLC	Aug 2026
Name hidden	West Mifflin	LLC	Aug 2026
Name hidden	West Mifflin	LLC	Aug 2026
Name hidden	West Mifflin	LLC	Jul 2026
Name hidden	West Mifflin	LLC	Jul 2026
Name hidden	West Mifflin	LLC	Jul 2026
Name hidden	West Mifflin	LLC	Jul 2026
Name hidden	West Mifflin	LLC	Jul 2026
Name hidden	West Mifflin	Nonprofit	Jul 2026
Name hidden	West Mifflin	LLC	Jul 2026
Name hidden	West Mifflin	LLC	Jun 2026
Name hidden	West Mifflin	LLC	Jun 2026
Name hidden	West Mifflin	LLC	Jun 2026
Name hidden	West Mifflin	LLC	Jun 2026
Name hidden	West Mifflin	LLC	Jun 2026
Name hidden	West Mifflin	LLC	Jun 2026

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Common questions about West Mifflin businesses

How many businesses are registered in West Mifflin, Pennsylvania?

ListRiver has 1,720 active registered businesses in West Mifflin, Pennsylvania on record as of October 11, 2026, from official Pennsylvania business registry data. Dissolved and defunct businesses are not counted.

How many new businesses were formed in West Mifflin, Pennsylvania in September 2026?

4 businesses on record in West Mifflin, Pennsylvania were formed in September 2026.

How many new businesses opened in West Mifflin, Pennsylvania in the last 12 months?

96 businesses on record in West Mifflin, Pennsylvania were formed in the 12 months through September 2026.

What is the most common type of business in West Mifflin, Pennsylvania?

LLCs are the most common: 988 of 1,720 businesses on record (57%), followed by Corporations with 586 (34%).

Where does this data come from?

From Pennsylvania'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 West Mifflin, Pennsylvania?

Use ListRiver's list builder to filter West Mifflin, Pennsylvania 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/pennsylvania/west-mifflin" title="New businesses in West Mifflin, Pennsylvania 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/pennsylvania/west-mifflin">Businesses in West Mifflin, Pennsylvania</a>, ListRiver</p></div>

About this data

Counts come from official Pennsylvania business registry records on file with ListRiver, current as of October 11, 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.