Private Investigator Agencies locations near Darien, IL

Showing 1–5 of 5 results

This page indexes 5 private investigator agencies listings for Darien, IL, covering 3 ZIP codes. Details on this page were last refreshed Oct 2026.

USA Detective Agency

Private Investigators & Private Detectives

📍 9654 W 131st St #315, Palos Park, IL, 60462

📞 708-361-2872

Domestic & Civil Investigations. USA Detective Agency, serving the South and Southwest Suburbs of Chicago, IL, is an privately owned and operated private investigation company with over 25 years of federal investigations experience and knowledge. We specialize in working with marital and relationship investigations, but also handle any kind of investigation you need information gathered for including work for attorneys and criminal investigation. Services we offer include: • Surveillance • Relationship investigations • Missing persons • Background checks • Polygraph services • Witness interview • Accident investigation • Skip tracing Let us help you take control of the situation by providing you with high quality, reliable investigative services. We accept all major credit cards. Call USA Detective Agency for a consultation today. License # 115-000813

Updated Oct 2026

Stealth Investigative Agency

Private Investigators & Private Detectives

📍 4923 Main St, Downers Grove, IL, 60515

📞 630-810-9075

🌐 sia-investigations.com

Stealth Investigative Agency is a private investigation firm located in Downers Grove, Illinois. They specialize in background checks and surveillance services. The agency's recent online activity indicates they are actively engaged in providing investigative solutions to clients in the area.