Directory – Private Investigators and Private Detectives in Illinois

Illinois Private Investigators
& Detective Agencies

Illinois PI Licensing Requirements



Crest Hill 1st American Investigations, LLC is a fully Licensed, Bonded, and Insured Agency. Providing process servers, executive protection, and

Northern Illinois FKS Investigations is the premier Private Detective Agency in Northern Illinois. We specialize in all Private, Legal & Business Investigations.

Chicago Courthouse Courier, We are a full service Private Detective and Private Process Serving firm with locations from Chicago to Springfield Illinois. If you have any questions please call 877-528-5997 or email Kyle

Glen Carbon Kellerman Investigations, Ltd. Southern Illinois Process Serving, License: 115-001758, 21 Kingsley Way, Glen Carbon, IL. 62034, 888-402-6662, 618-410-3943 cell,

Chicago Ultimate Security and Investigations of America, a full service investigative and private detective company serving the Chicago metro area. We specialize in a broad scope of investigative and security services along with security training, which includes classroom instruction and practical exercises.

Elgin We are a veteran-owned fully licensed and insured Illinois private detective agency located in Elgin, IL providing a wide range of investigative services and the service of process throughout Illinois. We specialize in domestic, civil, workers comp, personal injury, surveillance, fraud, background and skip tracing/Locate investigations and the service of process.


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542 Cross Keys Rd. Unit #3-228, Sicklerville, NJ 08081

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