Extended NAICS 561611-10 Part of official NAICS 561611 Extended NAICS 561611-10 · Parent 561611
Polygraph Service Business List
Reach companies across the U.S. and Canada. Build a list by state or province, with mailing addresses and phone numbers, plus contact emails where available for U.S. companies.
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Available business records
United States
United States
- Companies 146
- Phones 137
- Websites 92
- Contact emails 210
Canada
- Companies 5
- Phones 5
- Websites 3
Canadian counts for this segment are available on request.
What does 561611-10 Polygraph Service cover?
Polygraph service is a specialized industry that involves conducting lie detection tests using a polygraph machine. Polygraph tests are used to determine the truthfulness of a person's statements by measuring physiological responses such as blood pressure, pulse rate, respiration, and skin conductivity. Polygraph service providers work with clients from various industries, including law enforcement, government agencies, private companies, and individuals.
Official parent industry: NAICS 561611 - Investigation and Personal Background Check Services
Industry Examples & Products
Examples of products and services associated with companies in this industry.
- Law enforcement agencies
- Government agencies
- Private investigation firms
- Security companies
- Legal firms
- Human resources departments
- Insurance companies
- Pre-employment screening services
- Probation and parole offices
- Private individuals seeking truth verification
Common Equipment
Machinery these companies typically run. Equipment, parts and repair suppliers use this list to reach them.
- Polygraph machine
- Blood pressure cuff
- Pneumograph
- Electrodes
- GSR sensor
- Respiratory belts
- Ink pens
- Paper
- Computer software for data analysis
- Audio and video recording equipment
Website-reviewed records can include equipment details.
What your list can include
How to request your free sample
See how well the data matches your targeting before you decide to order.
Available for this segment: 146 U.S. companies · 210 contact emails
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Contact Website Phone Employees
Sample preview · details masked
- Company: name, status, HQ/branch, year opened, public/private
- Location: address, county, metro, latitude & longitude
- Contacts: name, title, email (with verification status), phone
- Firmographics: employees, sales volume, square footage, fleet size
- Digital: website, LinkedIn and social profiles
- Classification: SIC & NAICS (primary and secondary)
Some fields are available for selected records. See every field in the Data Dictionary
✓ Website-reviewed data included with purchased U.S. lists at no extra charge · How we review →
- Tell us who you want to reachChoose your industries, locations, company sizes and other targeting preferences.
- Receive your scored sample and pricingWe review your requirements and send a free sample scored for relevance, along with personalized pricing.
- Review and decideReview your sample and quote. If you decide to order, we re-scan your list before delivery to check for recently closed businesses, classification accuracy, duplicate records and relevance to your targeting.
Usually a reply within 1 hour during business hours.
Industry History
The Polygraph Service industry has a long and controversial history worldwide. The first polygraph machine was invented in 1921 by John Larson, a medical student at the University of California, Berkeley. The machine was initially used to monitor the vital signs of patients during surgery. However, Larson soon realized that the machine could also be used to detect lies. In the 1930s, the polygraph machine was used by law enforcement agencies in the United States to investigate criminal cases. During World War II, the machine was used to screen military personnel for security clearance. In the 1960s, the Supreme Court of the United States ruled that the results of polygraph tests were not admissible in court due to their unreliability. Despite this ruling, the polygraph machine continues to be used by law enforcement agencies and private investigators worldwide.
In recent history, the use of polygraph tests has become increasingly controversial in the United States. In 1988, Congress passed the Employee Polygraph Protection Act, which prohibits most private employers from using polygraph tests for pre-employment screening or during the course of employment. However, the law does allow polygraph tests to be used in certain circumstances, such as in investigations of economic loss or injury to the employer. In addition, some government agencies, such as the Federal Bureau of Investigation and the Central Intelligence Agency, continue to use polygraph tests as part of their screening process for employees. Despite the controversy surrounding the use of polygraph tests, the Polygraph Service industry continues to provide services to law enforcement agencies, private investigators, and government agencies worldwide.
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Cited in research and government
Referenced by CDC/NIOSH, Columbia University, and other academic and government sources since 1998. See citations
15 million businesses
U.S. and Canadian companies across SIC and NAICS industries.
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Questions about buying this list
What's included in a free sample?
Your free sample includes example companies matching your target industry, with available business details such as company names, locations, phone numbers, and websites. You can review the data before deciding to purchase. Email addresses are not included in free samples.
How much does a list cost?
Pricing depends on how many companies you need, which data fields you choose and how targeted your list is. Request a free sample to get a personalized quote, or view our standard business list pricing.
Can I customize my list by location, company size, or other criteria?
Yes. Filter by state, province, city, county, ZIP code, geographic radius, employee count, sales volume, years in business, contact titles, and more. We offer extensive targeting options using our business data dictionary. Tell us what you're looking for, and we'll help build a list that matches your requirements.
How current is the data?
Our business database is regularly maintained and updated. Each purchased list is checked again before delivery, including website and business-activity reviews where available, to help identify outdated or mismatched records. Read our data verification methodology
What file formats do you deliver?
Business lists are available in CSV, Excel-compatible, and text formats. Other delivery options may be available depending on your requirements. We'll confirm the format before preparing your list.
Can I use the list for email marketing?
Yes. Business email contacts are available by request for eligible U.S. lists, where available. Canadian business lists do not include contact email addresses. You're responsible for ensuring your outreach complies with applicable email marketing laws.
How does SICCODE.com ensure high-quality business lists?
Every business list is prepared specifically for your order and reviewed by our team before delivery.
We evaluate companies against your specific targeting criteria, review available company websites and business information, and score leads for relevance to your target market or campaign.
Each purchased list is re-scanned on the day of delivery to help identify outdated, closed, or misclassified businesses.
Our Website-Reviewed & Enriched service is included with purchased U.S. business lists at no additional charge, helping you receive more relevant, actionable company data. It does not promise that every field is perfect or individually verified.
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NAICS classification hierarchy
Five official Census levels, from sector to national industry, plus a commercial extended level.
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Extended 8-digit NAICS 561611-10 Polygraph Service
561611-10 is an 8-digit commercial segment used for business lists, not an official Census NAICS code. For government forms and filings, use NAICS 561611. Classification methodology →
About this classification
This page represents a commercial Extended NAICS industry classification used for business targeting, industry research, data analysis, and company classification. It is not an official U.S. Census Bureau NAICS code. Its parent industry is an official NAICS classification defined by the U.S. Census Bureau. Classifications are reviewed regularly by SICCODE.com's Classification Review Team.
SICCODE.com classifies companies under both Extended NAICS and Extended SIC. A company may appear in both classification systems, so company counts should not be added together without deduplication.