Verified Nov 2026
Metal Fabrication
·
Murphysboro, Illinois
·
Since 1923
Penn Aluminum International LLC manufactures aluminum extruded profiles, custom shapes, and precision drawn tubing. The company was founded in 1923 and is headquartered in Murphysboro, Illinois, with a facility in Harlingen, Texas. It employs an estimated 200 to 500 people, has an estimated revenue band of $50 to $100 million, and is part of The Marmon Group. It serves the automotive, electric-vehicle, construction, military-defense, and industrial-equipment sectors. In January 2026, the Harlingen Economic Development Corporation met with the company to discuss foreign-trade zone opportunities.
Penn Aluminum International LLC at a glance
Revenue
$50-100M
Est. band
Employees
200-500
Founded
1923
Headquarters
Murphysboro, Illinois
Certifications
IATF 16949 · ISO/TS 16949
Industries
Automotive
Electric Vehicles
Construction
Military & Defense
Industrial Equipment
STABILITY SIGNALS
Established & active
103 years in operation (founded 1923).
Holds IATF 16949, ISO/TS 16949 certification(s) per public sources.
Overview
Penn Aluminum International LLC manufactures aluminum extruded profiles, custom shapes, and precision drawn tubing. The company was founded in 1923 and is headquartered in Murphysboro, Illinois, with a facility in Harlingen, Texas. It employs an estimated 200 to 500 people, has an estimated revenue band of $50 to $100 million, and is part of The Marmon Group. It serves the automotive, electric-vehicle, construction, military-defense, and industrial-equipment sectors. In January 2026, the Harlingen Economic Development Corporation met with the company to discuss foreign-trade zone opportunities.
At a glance
Attribute | Detail |
|---|---|
Founded | 1923 |
Headquarters | Murphysboro, Illinois |
Employees | 200-500 |
Revenue | $50-100M (estimated) |
Primary capability | Metal Fabrication |
Certifications | IATF 16949 · ISO/TS 16949 |
What Penn Aluminum International LLC makes
The company lists extrusion, aluminum fabrication, and thermal management among its products and holds IATF 16949 and ISO/TS 16949 certifications.
Products and capabilities described on the company's own site include Extrusion, Aluminum, Thermal Management (source: pennaluminum.com).
Certifications
Penn Aluminum International LLC is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
IATF 16949 — pennaluminum.com
ISO/TS 16949 — pennaluminum.com
Latest developments
2026-10-02 — JD Martin Company has partnered with Penn Aluminum International LLC, expanding their aluminum conduit solutions across our 19-state footprint. | Graydon Myers (linkedin.com)
2026-10-01 — Penn Aluminum Conduit and EMT is excited to announce our partnership with JD Martin! | Penn Aluminum Conduit & EMT (linkedin.com)
2026-10-01 — We’re excited to officially kick off our new partnership with Penn Aluminum! | Brooke Baker Schell (linkedin.com)
2026-01-27 — Harlingen EDC Meets With Penn Aluminum on FTZ Opportunities - RGG Business Journal (riograndeguardian.com)
2026-01-14 — As we enter the year celebrating our country’s founding 250 years ago, Penn Aluminum is proud our innovative BLUE LIGHTNING EMT was selected for installation in the new Theodore Roosevelt Presidential Library … | Penn Aluminum Conduit & EMT (linkedin.com)
2025-10-08 — Penn Aluminum: Precision, Community, and Progress in Murphysboro IL - Jackson Growth Alliance (jacksongrowthalliance.org)
Facilities
Penn Aluminum International LLC is headquartered in Murphysboro, Illinois. Public sources also reference these locations:
Murphysboro, IL — pennaluminum.com
Harlingen, TX — pennaluminum.com
Texas, Mexico — pennaluminum.com
Company details
The company is privately held, operates an estimated 200 to 500 employees, and has been in operation for over a century. Penn Aluminum International LLC was founded in 1923, has an estimated 200-500 employees, and is headquartered in Murphysboro, Illinois. On the LightSource stability read it is rated "Established & active": 103 years in operation (founded 1923). Holds IATF 16949, ISO/TS 16949 certification(s) per public sources.
Frequently asked questions
What does Penn Aluminum International LLC make?
Penn Aluminum International LLC manufactures aluminum extruded profiles, custom shapes, and precision drawn tubing. The company was founded in 1923 and is headquartered in Murphysboro, Illinois, with a facility in Harlingen, Texas. It employs an estimated 200 to 500 people, has an estimated revenue band of $50 to $100 million, and is part of The Marmon Group. It serves the automotive, electric-vehicle, construction, military-defense, and industrial-equipment sectors. In January 2026, the Harlingen Economic Development Corporation met with the company to discuss foreign-trade zone opportunities.
Where is Penn Aluminum International LLC headquartered?
Penn Aluminum International LLC is headquartered in Murphysboro, Illinois (1117 N 2nd St, Murphysboro, Illinois, 62966-3332).
When was Penn Aluminum International LLC founded?
Penn Aluminum International LLC was founded in 1923.
How big is Penn Aluminum International LLC?
Penn Aluminum International LLC has an estimated 200-500 employees, with revenue in the $50-100M range (estimated).
What certifications does Penn Aluminum International LLC hold?
Penn Aluminum International LLC lists IATF 16949 · ISO/TS 16949 on its website. Confirm the certified scope for the specific plant producing your part.
Related suppliers
Explore other suppliers in the LightSource directory:
Last verified Nov 2026. Is this your company? Request a correction.
Location & contact
Evaluating suppliers like these?
This profile comes from a public-data sample of around 1,000 companies. Book a demo to see the full LightSource marketplace and supplier discovery platform — 1M+ credible suppliers, with AI-run sourcing events.