Verified Nov 2026
Metal Stamping
·
Itasca, Illinois
·
Since 1946
Knowles Corporation is a private company headquartered in Itasca, Illinois, founded in 1946. It has an estimated 5,000 to 10,000 employees and an estimated annual revenue of $500 million to $1 billion. The company serves the automotive, electric-vehicle, electronics, appliance, medical, and military-defense industries. Its product lines include precision components such as capacitors, RF/microwave filters, and MEMS microphones, and in April 2026 it reported its Q1 2026 financial results. Its manufacturing capabilities include metal stamping, machining, assembly, and mold and plastic work.
Knowles Corporation at a glance
Revenue
$500M-1B
Est. band
Employees
5,000-10,000
Founded
1946
Headquarters
Itasca, Illinois
Certifications
AS9100 · ISO 13485 · ISO 45001 · ISO 9001
Industries
Automotive
Electric Vehicles
Electronics
Appliance
Medical
Military & Defense
STABILITY SIGNALS
Established & active
80 years in operation (founded 1946).
Holds AS9100, ISO 13485, ISO 45001, ISO 9001 certification(s) per public sources.
Overview
Knowles Corporation is a private company headquartered in Itasca, Illinois, founded in 1946. It has an estimated 5,000 to 10,000 employees and an estimated annual revenue of $500 million to $1 billion. The company serves the automotive, electric-vehicle, electronics, appliance, medical, and military-defense industries. Its product lines include precision components such as capacitors, RF/microwave filters, and MEMS microphones, and in April 2026 it reported its Q1 2026 financial results. Its manufacturing capabilities include metal stamping, machining, assembly, and mold and plastic work.
At a glance
Attribute | Detail |
|---|---|
Founded | 1946 |
Headquarters | Itasca, Illinois |
Employees | 5,000-10,000 |
Revenue | $500M-1B (estimated) |
Primary capability | Metal Stamping |
Certifications | AS9100 · ISO 13485 · ISO 45001 · ISO 9001 |
What Knowles Corporation makes
The company holds AS9100, ISO 13485, ISO 45001, and ISO 9001 certifications and lists capabilities in stamping, machining, assembly, sensors, PCB work, and mold and plastic processing.
Products and capabilities described on the company's own site include Stamping, Machining, Assembly, Sensor, Electronics, PCB, Mold, Plastic (source: knowles.com).
Certifications
Knowles Corporation is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
AS9100 — knowles.com
ISO 13485 — knowles.com
ISO 45001 — knowles.com
ISO 9001 — knowles.com
Latest developments
2026-08-26 — Knowles at Midwest IDEAS: margins rise as portfolio shift pays off By Investing.com (investing.com)
2026-08-12 — Elucent Medical Selects Knowles Corporation to Manufacture Advanced Surgical Guidance Device (prnewswire.com)
2026-07-23 — Knowles Reports Q2 2026 Financial Results and Provides Outlook for Q3 2026 - Knowles Corp. (knowles.com)
2026-04-23 — Knowles Reports Q1 2026 Financial Results and Provides Outlook for Q2 2026 - Knowles Corp. (knowles.com)
2026-02-05 — Knowles Reports Q4 & Full Year 2025 Financial Results and Provides Outlook for Q1 2026 - Knowles Corp. (knowles.com)
Company details
Knowles is privately held, and in August 2026 Elucent Medical selected the company to manufacture an advanced surgical guidance device. Knowles Corporation was founded in 1946, has an estimated 5,000-10,000 employees, and is headquartered in Itasca, Illinois. On the LightSource stability read it is rated "Established & active": 80 years in operation (founded 1946). Holds AS9100, ISO 13485, ISO 45001, ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Knowles Corporation make?
Knowles Corporation is a private company headquartered in Itasca, Illinois, founded in 1946. It has an estimated 5,000 to 10,000 employees and an estimated annual revenue of $500 million to $1 billion. The company serves the automotive, electric-vehicle, electronics, appliance, medical, and military-defense industries. Its product lines include precision components such as capacitors, RF/microwave filters, and MEMS microphones, and in April 2026 it reported its Q1 2026 financial results. Its manufacturing capabilities include metal stamping, machining, assembly, and mold and plastic work.
Where is Knowles Corporation headquartered?
Knowles Corporation is headquartered in Itasca, Illinois (1151 Maplewood Drive, Itasca, Illinois, 60143).
When was Knowles Corporation founded?
Knowles Corporation was founded in 1946.
How big is Knowles Corporation?
Knowles Corporation has an estimated 5,000-10,000 employees, with revenue in the $500M-1B range (estimated).
What certifications does Knowles Corporation hold?
Knowles Corporation lists AS9100 · ISO 13485 · ISO 45001 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
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Last verified Nov 2026. Is this your company? Request a correction.
Location & contact
Phone
'+1 630-250-5100
Certification
AS9100 · ISO 13485 · ISO 45001 · ISO 9001
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